Ali, R., Saravia, F., Hille-Reichel, A., Härrer, D., Gescher, J., Horn, H., 2021. Enhanced production of propionic acid through acidic hydrolysis by choice of inoculum. Journal of Chemical Technology & Biotechnology, DOI: 10.1002/jctb.6529

Ali, R., Saravia, F., Hille-Reichel, A., Gescher, J., Horn, H., 2021. Propionic acid production from food waste in batch reactors: Effect of pH, types of inoculum, and thermal pre-treatment. Bioresource Technology (319), 124166. 

Alvarado, A., West, S., Abbt-Braun, G., Horn, H., 2021. Hydrolysis of particulate organic matter from municipal wastewater under aerobic treatment. Chemosphere 263, 128329. 

Bauer, A., Wagner, M., Horn, H., Saravia, F. 2021. Operation conditions affecting scale formation in membrane distillation - An in situ scale study based on optical coherence tomography. Journal of Membrane Science 623, 118989.

Edel, M., Sturm, G., Sturm-Richter, K., Wagner, M., Ducassou, J.N., Couté, Y., Horn, H., Gescher, J. 2021. Extracellular riboflavin induces anaerobic biofilm formation in Shewanella oneidensis. Biotechnology for Biofuels 14(1), 130. DOI: 10.1186/s13068-021-01981-3

Fundneider, T., Acevedo Alonso, V., Abbt-Braun, G., Wick, A., Albrecht, D., Lackner, S., 2021. Empty bed contact time: The key for micropollutant removal in activated carbon filters. Water Research 191, 116765, DOI: 10.1016/j.watres.2020.116765

Grießmeier, V., Wienhöfer, J., Horn, H., Gescher, J., 2021. Assessing and modeling biocatalysis in field denitrification beds reveals key influencing factors for future constructions. Water Research 188, 116467.

Jung, T., Hackbarth, M., Horn, H., Gescher, J. 2021. Improving the cathodic biofilm growth capabilities of Kyrpidia spormannii EA-1 by undirected mutagenesis. Microorganisms 9(77),  DOI: 10.3390/microorganisms9010077

Lohani, S.P., Dhungana, B., Horn, H., Khatiwada, D. 2021. Small-scale biogas technology and clean cooking fuel: Assessing the potential and links with SDGs in low-income countries – A case study of Nepal. Sustainable Energy Technologies and Assessments 46, 101301. DOI: 10.1016/j.seta.2021.101301

Miehle, M., Hackbarth, M., Gescher, J., Horn, H., Hille-Reichel, A., 2021. Biological biogas upgrading in a membrane biofilm reactor with and without organic carbon source. Bioresource Technology (335), 125287.

Pino-Soto, L., Schwarz, A., Vargas, C., Saravia, F., Horn, H., Bórquez, R. 2021. Influence of multivalent-electrolyte metal solutions on the superficial properties and performance of a polyamide nanofiltration membrane. Separation and Purification Technology, 118846. DOI: 10.1016/j.seppur.2021.118846

Pratofiorito, G., Hackbarth, M., Mandel, C., Madlanga, S., West, S., Horn, H., Hille-Reichel, A., 2021. A membrane biofilm reactor for hydrogenotrophic methanation. Bio­re­source Technology, DOI: 10.1016/j.biortech.2020.124444

Pratofiorito, G., Horn, H., Saravia, F. 2021. Impact of the recovery on concentrating acetic acid with low-pressure reverse-osmosis membranes. Membranes 11(10). DOI: 10.3390/membranes11100742

Ranzinger, F., Schröter, K., Horn, H., Wagner, M. 2021. Investigation of biofilm growth within a monodisperse porous medium under fluctuating water level assessed by means of MRI. Water 13(18). DOI: 10.3390/w13182456

Sturm, M.T., Horn, H., Schuhen, K. 2021. The potential of fluorescent dyes - comparative study of Nile red and three derivatives for the detection of microplastics. Analytical and Bioanalytical Chemistry 413, 1059-1071.

Sturm, M.T., Horn, H., Schuhen, K. 2021. Removal of microplastics from waters through agglomeration-fixation using organosilanes - Effects of polymer types, water composition and temperature. Water 13(5).

Sturm, M.T., Schuhen, K., Horn, H. 2021. Method for rapid biofilm cultivation on microplastics and investigation of its effect on the agglomeration and removal of microplastics using organosilanes. Science of The Total Environment, 151388. DOI: 10.1016/j.scitotenv.2021.151388


Balbierer, R., Seegert, P., Herberger, S., Wetzel, T., Nirschl, H., Guthausen, G., 2020. Investigation of trans­verse relaxa­tion rate distribution via magnetic resonance imaging: Im­pact of electrode formation. Energy Technology 2000579, 1–8.

Bogler, A., Packman, A., Furman, A., Gross, A., Kushmaro, A., Ronen, A., Dagot, C., Hill, C., Vaizel-Ohayon, D., Morgenroth, E., Bertuzzo, E., Wells, G., Kiperwas, H.R., Horn, H., Negev, I., Zucker, I., Bar-Or, I., Moran-Gilad, J., Balcazar, J.L., Bibby, K., Elimelech, M., Weisbrod, N., Nir, O., Sued, O., Gillor, O., Alvarez, P.J., Crameri, S., Arnon, S., Walker, S., Yaron, S., Nguyen, T.H., Berchenko, Y., Hu, Y., Ronen, Z., Bar-Zeev, E., 2020. Rethinking wastewater risks and monitoring in light of the COVID-19 pandemic. Nature Sustainability., doi: 10.1038/s41893-020-00605-2

Brown, P.C., Borowska, E., Peschke, R., Schwartz, T.,  Horn, H., 2020. Decay of elevated antibiotic resistance genes in natural river sediments after sedimentation of waste­water particles. Science of the Total Environment 705, 135861.

Fengler, C., Arens, L., Horn, H., Wilhelm, M., 2020. Desalination of seawater using cationic poly(acrylamide) hydrogels and mechanical forces for separation. Macromolecular Materials and Engineering 305, 2000383.

Gerbersdorf, S.U., Koca, K., de Beer, D., Chennu, A., Noss, C., Risse-Buhl, U., Weitere, M., Eiff, O., Wagner, M., Aberle, J., Schweikert, M., Terheiden, K., 2020. Exploring flow-biofilm-sediment interactions: Assessment of current status and future challenges. Water Res. 185.

Gierl, L., Stoy, K., Faíña, A., Horn, H., Wagner, M., 2020. An open-source robotic platform that enables automated monitoring of replicate biofilm cultivations using optical coherence tomography. npj Biofilms and Microbiomes 6 (1), 18.

Guo, T., Ji, Y., Zhao, J., Horn, H., Li, J. 2020., Coupling of Fe-C and aerobic granular sludge to treat refractory wastewater from a membrane manufacturer in a pilot-scale system. Water Research 186, 116331.

Hackbarth, M., Jung, T., Eberhard Reiner, J., Gescher, J., Horn, H., Hille-Reichel, A., Wagner, M., 2020. Monitoring and quantification of bioelectrochemical Kyrpidia spormannii biofilm development in a novel flow cell setup. Chemical Engineering Journal 390, 124604.

Ibrahim, M., Rudszuck, T., Kerdi, B., Krämer, S., Guthausen, G., Powell, A.K., 2020. Comparative NMR relaxivity study of polyoxometalate-based clusters [Mn4(H2O)2(P2W1SO56)2]16- and [{Dy(H2O)6}2Mn4(H2O)2(P2W15O56)2]10- from 20 MHz to 1.2 GHz. Applied Magnetic Resonance, DOI: 10.1007/s00723-020-01267-1.

Kaysan, G., Spiegel, B., Guthausen, G., Kind, M., 2020. Influ­ence of shear flow on the crystallization of organic melt emulsions – A rheo-nuclear magnetic resonance investigation. Chemical Engineering & Technology 43 (9), 1699–1705.

Kieselbach, M., Hogen, T., Geißen, S.-U., Track, T., Becker, D., Rapp, H.-J., Koschikowski, J., Went, J., Horn, H., Saravia, F., Bauer, A., Schwantes, R., Pfeifle, D., Heyn, N., Weissroth, M., Fitzke, B., 2020. Brines from industrial water recycling: new ways to resource recovery. Journal of Water Reuse and Desalination. jwrd2020033.

Klemens, F., Schuhmann, S., Balbierer, R., Guthausen, G., Nirschl, H., Thäter, G., Krause, M.J., 2020. Noise reduction of flow MRI measurements using a lattice Boltzmann based topology optimisation approach. Computers & Fluids 197, 104391.

Layer, M., Bock, K., Ranzinger, F., Horn, H., Morgenroth, E., Derlon, N., 2020. Particulate substrate retention in plug-flow and fully-mixed conditions during operation of aerobic granular sludge systems. Water Research X 9, 100075.

Liu, W., Wu, Y., Zhang, S., Gao, Y., Jiang, Y., Horn, H., Li, J., 2020. Successful granulation and microbial differentiation of activated sludge in anaerobic/anoxic/aerobic (A2O) reactor with two-zone sedimentation tank treating municipal sewage. Water Research 178, 115825.

Niestroj-Pahl, R., Stelmaszyk, L., ElSherbiny, I.M.A., Abuelgasim, H., Krug, M., Staaks, C., Birkholz, G., Horn, H., Li, T., Dong, B., Dähne, L., Tiehm, A., Panglisch, S., 2020. Performance of layer-by-layer-modified Multibore® ultra­fil­tration capillary membranes for salt retention and removal of antibiotic resistance genes. Membranes 10, 398.

Ranzinger, F., Hille-Reichel, A., Zehe, E., Guthausen, G., Horn, H., 2020. Quantification of evaporation and drainage processes in unsaturated porous media using Magnetic Resonance Imaging (MRI). Water Resources Research, e2019WR026658.

Ranzinger, F., Matern, M., Layer, M., Guthausen, G., Wagner, M., Derlon, N., Horn, H., 2020. Transport and retention of artificial and real wastewater particles inside a bed of settled aerobic granular sludge assessed applying magnetic resonance imaging. Water Research X, 7, 100050.

Reiner, J.E., Geiger, K., Hackbarth, M., Fink, M., Lapp, C.J., Jung, T., Dötsch, A., Hügler, M., Wagner, M., Hille-Reichel, A., Wilcke, W., Kerzenmacher, S., Horn, H., Gescher, J., 2020. From an extremophilic community to an electroautotrophic production strain: identifying a novel Knallgas bacterium as cathodic biofilm biocatalyst. The ISME Journal 14, 1125–1140.

Schopf, R., Schork, N., Amling, E., Nirschl, H., Guthausen, G., Kulozik, U., 2020. Structural characterisation of de­pos­it layer during milk protein microfiltration by means of in-situ MRI and compositional analysis. Membranes 10 (4), 59.

Simkins, J.W., Schuhmann, S., Guthausen, G., Heijnen, M., Codd, S.L., Seymour, J.D., 2020. Characterization of biofilm distribution in hollow fiber membranes using com­pressed sensing magnetic resonance imaging. Journal of Membrane Science 594, 117437.

Sturm, M.T., Herbort, A.F., Horn, H., Schuhen, K., 2020. Comparative study of the influence of linear and branched alkyltrichlorosilanes on the removal efficiency of polyethylene and polypropylene-based microplastic particles from water. Environmental Science and Pollution Research 27, 10888–10898.

Telgmann, U., Borowska, E., Felmeden, J., Frechen, F.-B., 2020. The locally resolved filtration process for removal of phosphorus and micropollutants with GAC. Journal of Wa­ter Process Engineering 35, 101236.

Timm, A., Abendschön, P., Tölgyesi, L., Horn, H., Borowska, E., 2020. Solar-mediated degradation of linezolid and tedizolid under simulated environmental conditions: Kinetics, transformation and toxicity. Chemosphere 241, 125111.

Tosun, J., Scherer, U., Schaub, S., Horn, H., 2020. Making Europe go from bottles to the tap: Political and societal attempts to induce behavioral change. WIREs Water, e1435.

Xiao, K., Abbt-Braun, G., Horn, H., 2020. Changes in the characteristics of dissolved organic matter during sludge treatment: A critical review. Water Research 187, 116441.


Balbierer, R., Gordon, R., Schuhmann, S., Willenbacher, N., Nirschl, H., Guthausen, G., 2019. Sedimentation of lithium-iron-phosphate and carbon black particles in opaque suspensions used for lithium-ion-battery electrodes. Journal of Materials Science 54 (7), 5682–5694.

Bauer, A., Wagner, M., Saravia, F., Bartl, S., Hilgenfeldt, V., Horn, H., 2019. In-situ monitoring and quantification of fouling development in membrane distillation by means of optical coherence tomography. Journal of Membrane Science 577, 145–152.

Borowska, E., Gomes, J.F., Martins R.C., Quinta-Ferreira R.M., Horn, H., Gmurek M., 2019. Solar photocatalytic degradation of sulfamethoxazole by TiO2 modified with noble metals. Catalysts 9 (6), 500.

Brown, P., Borowska, E., Schwartz, T., Horn, H., 2019. Impact of the particulate matter from wastewater discharge on the abundance of antibiotic resistance genes and facultative pathogenic bacteria in downstream river sediments. Science of the Total Environment 649, 1171–1178.

Cuny, L., Pfaff, D., Luther, J., Ranzinger, F., Ödman, P., Gescher, J., Guthausen, G., Horn, H., Hille-Reichel, A., 2019. Evaluation of productive biofilms for continuous lactic acid production. Biotechnology and Bioengineering 116 (10), 2687–2697. https://doi.org/10.1002/bit.27080

Edel, M., Horn, H., Gescher, J., 2019. Biofilm systems as tools in biotechnological production. Applied Microbiology and Biotechnology 103 (13), 5095–5103.

Förster, E., Fraenza, C.C., Küstner, J., Anoardo, E., Nirschl, H., Guthausen, G., 2019. Monitoring of engine oil aging by low-field nuclear magnetic resonance relaxation and diffusion. Measurement 137, 673–682.

Guo, X., Pfeifer, C., Wilhelm, M., Luy, B., Guthausen, G., 2019. Structure of superabsorbent polyacrylate hydrogels and dynamics of counterions by nuclear magnetic resonance. Macromolecular Chemistry and Physics 220 (10), 1800525.

Guo, X., Theissen, S., Claussen, J., Hildebrand, V., Kamphus, J., Wilhelm, M., Luy, B., Guthausen, G., 2019. Dynamics of sodium ions and water in swollen superabsorbent hydrogels as studied by 23Na- and 1H-NMR. Macromolecular Chemistry and Physics 220 (2), 1800350.

Guo, X., Wetzel, K.S., Solleder, S.C., Spann, S., Meier, M.A.R., Wilhelm, M., Luy, B., Guthausen, G., 2019. 1H PFG-NMR diffusion study on a sequence-defined macromolecule: Confirming monodispoersity. Macromolecular Chemistry and Physics 220 (18), 1900155.

Hansen, S.H., Kabbeck, T., Radtke, C.P., Krause, S., Krolitzki, E., Peschke, T., Gasmi, J., Rabe, K.S., Wagner, M., Horn, H., Hubbuch, J., Gescher, J., Niemeyer, C.M., 2019. Machine-assisted cultivation and analysis of biofilms. Scientific Reports 9 (1), 8933.

Hatoum, R., Potier, O., Roques-Carmes, T., Lemaitre, C., Hamieh, T., Toufaily, J., Horn, H., Borowska, E., 2019. Elimination of micropollutants in activated sludge reactors with a special focus on the effect of biomass concentration. Water 11 (11), 2217.

Herrling, M., Lackner, S., Nirschl, H., Horn, H., Guthausen, G., 2019. Recent NMR/MRI studies of biofilm structures and dynamics. Annual Reports on NMR Spectroscopy 97, 163–213.

Jung, O., Saravia, F., Wagner, M., Heißler, S., Horn, H., 2019. Quantifying concentration polarization – Raman microscopy for in-situ measurement in a flat sheet cross-flow nanofiltration membrane unit. Scientific Reports 9, 15885.

Ravi, P.P., Merkle, W., Tuczinski, M., Saravia, F., Horn, F., Lemmer, A., 2019. Integration of membrane filtration in two stage anaerobic digestion system: Specific methane yield potentials of hydrolysate and permeate. Bioresource Technology 275, 138–144.

Rudszuck, T., Förster, E., Nirschl, H., Guthausen, G., 2019. Low-field NMR for quality control on oils. Magnetic Resonance in Chemistry 57 (10), 777–793.

Schork, N., Schuhmann, S., Nirschl, H., Guthausen, G., 2019. In situ measurement of deposit layer formation during skim milk filtration by MRI. Magnetic Resonance in Chemistry 57 (9), 738–748.

Schuhmann, S., Simkins, J.W., Schork, N., Codd, S.L., Seymour, J.D., Heijnen, M., Saravia, F., Horn, H., Nirschl, H., Guthausen, G., 2019. Characterization and quantification of structure and flow in multichannel polymer membranes by MRI. Journal of Membrane Science 570–571, 472–480.

Seviour, T., Derlon, N., Simonsen Dueholm, M., Flemming, H.-C., Girbal-Neuhauser, E., Horn, H., Kjelleberg, S., van Loosdrecht, M.C.M., Lotti, T., Malpei, F., Nerenberg, R., Neu, T.R., Paul, E., Yu, H., Lin, Y., 2019. Extracellular polymeric substances of biofilms: suffering from an identity crisis. Water Research 151, 1–7.

Timm, A., Borowska, E., Majewsky, M., Merel, S., Zwiener, C., Bräse, S., Horn, H., 2019. Photolysis of four β lactam antibiotics under simulated environmental conditions: Degradation, transformation products and antibacterial activity. Science of The Total Environment 651 (1), 1605–1612.

Wu, L., Ning, D., Zhang, B., Li, Y., Zhang, P., Shan, X., Zhang, Q., Brown, M., Li, Z., Van Nostrand, J.D., Ling, F., Xiao, N., Zhang, Y., Vierheilig, J., Wells, G.F., Yang, Y., Deng, Y., Tu, Q., Wang, A., Acevedo, D., Agullo-Barcelo, M., Andersen, G.L., de Araujo, J.C., Boehnke, K., Bond, P., Bott, C.B., Bovio, P., Brewster, R.K., Bux, F., Cabezas, A., Cabrol, L., Chen, S., Criddle, C.S., Deng, Y., Etchebehere, C., Ford, A., Frigon, D., Gómez, J.S., Griffin, J.S., Gu, A.Z., Habagil, M., Hale, L., Hardeman, S.D., Harmon, M., Horn, H., Hu, Z., Jauffur, S., Johnson, D.R., Keller, J., Keucken, A., Kumari, S., Leal, C.D., Lebrun, L.A., Lee, J., Lee, M., Lee, Z.M.P., Li, M., Li, X., Ling, F., Liu, Y., Luthy, R.G., Mendonça-Hagler, L.C., de Menezes, F.G.R., Meyers, A.J., Mohebbi, A., Oehmen, A., Palmer, A., Parameswaran, P., Park, J., Patsch, D., Reginatto, V., de los Reyes, F.L., Robles, A.N., Rossetti, S., Sidhu, J., Sloan, W.T., Smith, K., de Sousa, O.V., Stephens, K., Tian, R., Tooker, N.B., De los Cobos Vasconcelos, D., Wakelin, S., Wang, B., Weaver, J.E., West, S., Wilmes, P., Woo, S.-G., Wu, J.-H., Wu, L., Xi, C., Xu, M., Yan, T., Yang, M., Young, M., Yue, H., Zhang, Q., Zhang, W., Zhang, Y., Zhou, H., Zhang, T., He, Z., Keller, J., Nielsen, P.H., Alvarez, P.J.J., Criddle, C.S., Wagner, M., Tiedje, J.M., He, Q., Curtis, T.P., Stahl, D.A., Alvarez-Cohen, L., Rittmann, B.E., Wen, X., Zhou, J., Global Water Microbiome, C., 2019. Global diversity and biogeography of bacterial communities in wastewater treatment plants. Nature Microbiology 4, 1183–1195.


Bär, K., Merkle, W., Tuczinski, M., Saravia, F., Horn, H., Ortloff, F., Graf, F., Lemmer, A., Kolb, T., 2018. Development of an innovative two-stage fermentation process for high-calorific biogas at elevated pressure. Biomass and Bioenergy 115, 186–194.

Fatoorehchi, E., West, S., Abbt-Braun, G., Horn, H., 2018. The molecular weight distribution of dissolved organic carbon after application off different sludge disintegration techniques. Separation and Purification Technology 194, 338–345. https://doi.org/10.1016/j.seppur.2017.11.047.

Frimmel, F.H., Abbt-Braun, G., 2018. Humic matter: basis for life – a plea for humics care. Journal of Soils and Sediments 18, 2668–2674. https://doi.org/10.1007/s11368-018-1915-5.

Guo, X., Theissen, S., Claussen, J., Hildebrand, V., Kamphus, J., Wilhelm, M., Luy, B., Guthausen, G., 2018. Topological insight into superadsorbent hydrogel network structures: a 1H double-quantum NMR study. Macromolecular Chemistry and Physics 219 (13).

Jeihanipour, A., Shen, J., Abbt-Braun, G., Huber, S.A., Mkongo, G., Schäfer, A.I., 2018. Seasonal variation of organic matter characteristics and fluoride concentration in the Maji ya Chai River (Tanzania): Impact on treatability by nanofiltration/reverse osmosis. Science of the Total Environment 637–638, 1209–1220. https://doi.org/10.1016/j.scitotenv.2018.05.113.

Katz, S., Wagner, M., Horn, H., Tarchitzky, J., Chen, Y., 2018. Size and stability of suspended aggregates in municipal effluents containing montmorillonite, bacteria and fulvic acid. Irrigation Science 36 (4-5), 203–216.

Kespe, M., Förster, E., Nirschl, H., Guthausen, G., 2018. Flowing liquids in NMR: Numerical CFD simulation and experimental confirmation of magnetization buildup. Applied Magnetic Resonance 49 (7), 687–705.

Kiilerich, B., Wagner, M., Nielsen, A.H., Vollertsen, J., 2018. Apparent diffusion coefficients in sewer force main biofilms treated with iron salts. Environmental Science: Water Research & Technology 4 (10), 1501–1510.

Klemens, F., Schuhmann, S., Guthausen, G., Thäter, G., Krause, M.J., 2018. CFD-MRI: A coupled measurement and simulation approach for accurate fluid flow characterisation and domain identification. Computers & Fluids 166, 218–224.

Laryea, E., Schuhardt, N., Guthausen, G., Oerther, T., Kind, M., 2018. Construction of a temperature controlled Rheo-NMR measuring cell - Influence of fluid dynamics on PMMA-polymerization kinetics. Microporous and Mesoporous Materials 269, 65–70.

Li, C., Brunner, F., Wagner, M., Lackner, S., Horn, H., 2018. Quantification of particulate matter attached to the bulk-biofilm interface and its influence on local mass transfer. Separation and Purification Technology 197, 86–94.

Linke, C., Guthausen, G., Flöter, E., Drusch, S., 2018. Solid fat content determination of dispersed lipids by time-domain NMR. European Journal of Lipid Science and Technology 120 (4).

Liu, Y., Li, C., Lackner, S., Wagner, M., Horn, H., 2018. The role of interactions of effective biofilm surface area and mass transfer in nitrogen removal efficiency of an integrated fixed-film activated sludge system. Chemical Engineering Journal 350, 992–999.

Picioreanu, C., Blauert, F., Horn, H., Wagner, M., 2018. Determination of mechanical properties of biofilms by modelling the deformation measured using optical coherence tomography. Water Research 145, 588–598.

Räntzsch, V., Haas, M., Özen, M.B., Ratzsch, K.-F., Riazi, K., Kauffmann-Weiss, S., Palacios, J.K., Müller, A.J., Vittorias, I., Guthausen, G., Wilhelm, M., 2018. Polymer crystallinity and crystallization kinetics via benchtop 1H NMR relaxometry: Revisited method, data analysis, and experiments on common polymers. Polymer 145, 162-173.

Ren, M., Drosos, M., Frimmel, F. H., 2018. Inhibitory effect of NOM in photocatalysis process - Explanation and resolution. Chemical Engineering 334, 968–975.

Rosenthal, A.F., Griffin, J.S., Wagner, M., Packman, A.I., Balogun, O., George, F.W., 2018. Morphological analysis of pore size and connectivity in a thick mixed-culture biofilm. Biotechnology and Bioengineering 115 (9), 2268–2279.

Schmidt, A., Sturm, G., Lapp, C.J., Siebert, D., Saravia, F., Horn, H., Ravi, P.P., Lemmer, A., Gescher, J., 2018. Development of a production chain from vegetable biowaste to platform chemicals. Microbial Cell Factories 17(1), 90.

Schork, H., Schuhmann, S., Arndt, F., Schütz, S., Guthausen, G., Nirschl, H., 2018. MRI investigations of filtration: Fouling and cleaning processes. Microporous and Mesoporous Materials 269, 60–64.

Schuhmann, S., Schork, N., Beller, K., Nirschl, H., Oerther, T., Guthausen, G., 2018. In-situ characterization of deposits in ceramic hollow fiber membranes by compressed sensing RARE-MRI. AIChE Journal 64 (11), 4039–4046.

Tuczinski, M., Saravia, F., Horn, H., 2018. Treatment of thermophilic hydrolysis reactor effluent with ceramic microfiltration membranes. Bioprocess and Biosystems Engineering 41 (11), 1561–1571.

Vargas, M.A., Scheubner, M., Guthausen, G., 2018. Reaction kinetics of polyfurfuryl alcohol bioresin and nanoparticles by 1H-NMR transverse relaxation measurements. Polymer Composites 39 (9), 3280–3288.


Agrawal, S., Karst, S.M., Gilbert, E.M., Horn, H., Nielsen, P.H., Lackner, S., 2017. The role of inoculum and reactor configuration for microbial community composition and dynamics in mainstream partial nitritation anammox reactors. MicrobiologyOpen 6 (4), Publication Number: e00456.

Bestgen, S., Fuhr, O., Breitung, B., Kiran Chakravadhanula, V.S., Guthausen, G., Hennrich, F., Yu, W., Kappes, M.M., Roesky, P.W., Fenske, D., 2017. [Ag115S34(SCH2C6H4tBu)47(dpph)6]: synthesis, crystal structure and NMR investigations of a soluble silver chalcogenide nanocluster. Chemical Science 8 (3), 2235–2240.

Herrling, M.P., Weisbrodt, J., Kirkland, C.M., Williamson, N.H., Lackner, S., Codd, S.L., Seymour, J.D., Guthausen, G., Horn, H., 2017. NMR investigation of water diffusion in different biofilm structures. Biotechnology and Bioengineering 114 (12), 2857–2867.

Herzog, B., Dötsch, A., Lemmer, H., Horn, H., Müller, E., 2017. Profiling 5-tolyltriazole biodegrading sludge communities using next-generation sequencing and denaturing gradient gel electrophoresis. Systematic and Applied Microbiology 40 (8), 508–515.

Horn H., Bennemann H., Blöcher C., Geißen S.-U., Marzinkowski J.M., Scherer U., 2017. Wastewater: 1. Introduction, In: Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH Verlag GmbH & Co. KGaA. 10.1002/14356007.b08_001.pub3.

Laryea, E., Schuhardt, N., Guthausen, G., Oerther, T., Kind, M., 2017. Construction of a temperature controlled Rheo-NMR measuring cell – Influence of fluid dynamics on PMMA-polymerization kinetics. Microporous and Mesoporous Materials, DOI: 10.1016/j.micromeso.2017.03.038.

Nguyen, Y.T., Kieu, H.T.Q., West, S., Dang, Y.T., Horn, H., 2017. Community structure of a sulfate-reducing consortium in lead-contaminated wastewater treatment process. World Journal of Microbiology and Biotechnology 33 (1), Publication Number: 10.

Peng, D., Saravia, F, Bock, K., Pelikan, M., Abbt-Braun, G., Horn, H., 2017. The rejection of trihalomethanes by nanofiltration membranes: influences of adsorption and NOM fouling. Desalination and Water Treatment 84, 19–30. doi: 10.5004/dwt.2017.20915.

Qian, J., Horn, H., Tarchitzky, J., Chen, Y., Katz, S., Wagner, M., 2017. Water quality and daily temperature cycle affect biofilm formation in drip irrigation devices revealed by optical coherence tomography. Biofouling 33 (3), 211–221.

Räntzsch, V., Özen, M.B., Ratzsch, K.-F., Guthausen, G., Wilhelm, M., 2017. Shear rheology and 1H TD-NMR combined to low-field RheoNMR: Set-Up and application to quiescent and flow-induced crystallization of polymers. AIP Conference Proceedings 1843, Publication Number: 040001.

Ren, M., Horn, H., Frimmel, F.H., 2017. Aggregation behavior of TiO2 nanoparticles in municipal effluent: Influence of ionic strengthen and organic compounds. Water Research 123, 678–686.

Ruppert, J., Frimmel, F. H., Baier, R., Baumann, H., 2017. Investigation of corrosion rates with an electrochemical measuring cell in relation to the W0-factor according to DIN 50929-3 and the concentration of dissolved organic carbon (DOC). Materials and Corrosion 68 (4), 476–482.

Schork, N., Schuhmann, S., Arndt, F., Schütz, S., Guthausen, G., Nirschl, H., 2017. MRI investigations of filtration: Fouling and cleaning processes. Microporous and Mesoporous Materials, DOI: 10.1016/j.micromeso.2017.05.042.

Schwientek, M., Rügner, H., Scherer, U., Rode, M., Grathwohl, P., 2017. A parsimonious approach to estimate PAH concentrations in river sediments of anthropogenically impacted watersheds. Science of the Total Environment 601, 636–645.

Vargas, M.A., Scheubner, M., Guthausen, G., 2017. Reaction kinetics of polyfurfuryl alcohol bioresin and nanoparticles by 1H-NMR transverse relaxation measurements. Polymer Composites, DOI: 10.1002/pc.24342.

Wagner, M., Horn, H., 2017. Optical coherence tomography in biofilm research: A comprehensive review. Biotechnology and Bioengineering 114 (7), 1386–1402.

Wangpraseurt, D., Wentzel, C., Jacques, S.L., Wagner, M., Kühl, M., 2017. In vivo imaging of coral tissue and skeleton with optical coherence tomography. Journal of the Royal Society Interface 14, 1–12.


Herrling, M.P., Tatti, O., Guthausen, G., Delay, M., Franzreb, M., Lackner, S., Horn, H., 2016. Short and long term biosorption of silica-coated Iron oxide nanoparticles in heterotrophic biofilms. Science of the Total Environment 544, 722–729.

Kondrakov, A.O., Ignatev, A.N., Lunin, V.V., Frimmel, F.H., Bräse, S., Horn, H., 2016. Roles of water and dissolved oxygen in photocatalytic generation of free OH radicals in aqueous TiO2 suspensions: An isotope labeling study. Applied Catalysis B: Environmental 118, 424–430.

Labena, A., Hegazy, M.A., Horn, H., Müller, E., 2016. Sulfidogenic-corrosion inhibitory effect of cationic monomeric and gemini surfactants: planktonic and sessile diversity. RSC Advances 6, 42263–42278.

Li, C., Felz, S., Wagner, M., Lackner, S., Horn, H., 2016. Investigating biofilm structure developing on carriers from lab-scale moving bed biofilm reactors based on light microscopy and optical coherence tomography. Bioresource Technology 200, 128–136.

Li, C., Wagner, M., Lackner, S., Horn, H., 2016. Assessing the influence of biofilm surface roughness on mass transfer by combining optical coherence tomography and two-dimensional modeling. Biotechnology Bioengineering 113, 989–1000.

Li, W.T., Majewsky, M., Abbt-Braun, G., Horn, H., Jin, J., Li, Q., Zhou, Q., Li, A.M., 2016. Application of portable online LED UV fluorescence sensor to predict the degradation of dissolved organic matter and trace organic contaminants during ozonation. Water Research 101 (15), 262–271.

Lohani, S.P., Wang, S., Lackner, S., Horn, H., Khanal, S.N., Bakke, R., 2016. ADM1 modeling of UASB treating domestic wastewater in Nepal. Renewable Energy 95, 263–268.

Majewsky, M., Bitter, H., Eiche, E., Horn, H., 2016. Determination of microplastic polyethylene (PE) and polypropylene (PP) in environmental samples using thermal analysis (TGA-DSC). Science of the Total Environment 568, 507–511.

Majewsky, M., Wagner, M., Farlin, J., 2016. Do you reckon it’s normally distributed? Science of the Total Environment 548–549, 408–409.

Peng, D., Saravia, F., Abbt-Braun, G., Horn, H., 2016. Occurrence and simulation of trihalomethanes in swimming pool water: A simple prediction method based on DOC and mass balance. Water Research 88, 634–642.

Piculell, M., Suarez, C., Li, C., Christensson, M., Persson, F., Wagner, M., Hermansson, M., Jönsson, K., Welander, T., 2016. The inhibitory effects of reject water on nitrifying populations grown at different biofilm thickness. Water Research 104, 292–302.

Qian, J., Walters, E., Rutschmann, P., Wagner, M., Horn, H., 2016. Modelling the influence of total suspended solids on E.coli removal in river water. Water Science Technology 73 (6), 1320–1332.

Ranzinger, F., Herrling, M.P., Lackner, S. Grande, V., Baniodeh, A., Powell, A., Horn, H., Guthausen, G., 2016. Direct surface visualization of biofilms with high spin coordination clusters using magnetic resonance imaging. Acta Biomaterialia 31, 167–177.

Ruppert, J., Frimmel, F.H., Baier, R., Binder, G., 2016. Comparison of corrosion rates obtained from laboratory and field data. Materials and Corrosion 67, 660–666.

West, S., Wagner, M., Engelke, C., Horn, H., 2016. Optical coherence tomography for the in situ three-dimensional visualization and quantification of feed spacer channel fouling in reverse osmosis membrane modules. Journal of Membrane Science 498, 345–352.

Zemann, M., Majewsky, M., Wolf, L., 2016. Accumulation of pharmaceuticals in groundwater under arid climate conditions – Results from unsaturated column experiments. Chemosphere 154, 463–471.


Blauert, F., Horn, H., Wagner, M., 2015. Time-resolved biofilm deformation measurements using optical coherence tomography. Biotechnology and Bioengineering 112 (9), 1893–1905.

Cuny, L., Herrling, M.P., Guthausen, G., Horn, H., Delay, M., 2015. Magnetic resonance imaging reveals detailed spatial and temporal distribution of iron-based nanoparticles transported through water-saturated porous media. Journal of Contaminant Hydrology 182, 51–62.

Delay, M., Mangold, S., Sembritzki, R., Frimmel, F.H., 2015. Chromium speciation in solid waste material and eluates by X-ray absorption spectroscopy and ion chromatography. Aquatic Geochemistry 21 (2–4), 313–329.

Delay, M., Schwegmann, H., Frimmel, F.H., 2015. Nanoparticles and refractory organic matter: Interactions and consequences. Journal of Environmental Chemical Engineering 3 (4), 2997–3004.

Drosos, M., Ren, M., Frimmel, F.H., 2015. The effect of NOM to TiO2: interactions and photocatalytic behavior. Applied Catalysis B: Environmental 165, 328–334.

Farlin, J., Majewsky, M., 2015. How benchmarking in science can lead to a reversal of priorities. Environmental Science & Technology 49 (5), 2604–2605.

Gilbert, E.M., Agrawal, S., Schwartz, T., Horn, H., Lackner, S., 2015. Comparing different reactor configurations for Partial Nitritation/Anammox at low temperatures. Water Research 81, 92–100.

Gmurek, M., Horn, H., Majewsky, M., 2015. Phototransformation of sulfamethoxazole under simulated sunlight: Transformation products and their antibacterial activity toward Vibrio fischeri. Science of the Total Environment 538, 58–63.

Guthausen, G., Machado, J.R., Luy, B., Baniodeh, A., Powell, A.K., Kramer, S., Ranzinger, F., Herrling, M.P., Lackner, S., Horn, H., 2015. Characterisation and application of ultra-high spin clusters as magnetic resonance relaxation agents. Dalton Trans 44 (11), 5032–5040.

Hack, N., Reinwand, C., Abbt-Braun, G., Horn, H., Frimmel, F.H., 2015. Biodegradation of phenol, salicylic acid, benzenesulfonic acid, and iomeprol by pseudomonas fluorescens in the capillary fringe, Journal of contaminant hydrology 183, 40–54.​

Herrling, M.P., Fetsch, K.L., Delay, M., Blauert, F., Wagner, M., Franzreb, M., Horn, H., Lackner, S., 2015. Low bioaccumulation of PVA coated engineered magnetic nanoparticles in granular sludge assessed by magnetic susceptibility. Science of the Total Environment 537, 43–50.

Herrling, M.P., Guthausen, G., Wagner, M., Lackner, S., Horn, H., 2015. Determining the flow regime in a biofilm carrier by means of magnetic resonance imaging. Biotechnology and Bioengineering 112 (5), 1023–1032.

Herzog, B.H., Lemmer, H., Horn, H., Müller, E., 2015. A note on benzotriazole concentrations in the receiving waters of different sewage treatment plants. Asian Pacific Journal of Microbiology Research 3 (1), 3.

Kieu, H., Nguyen, Y.T., Dang, Y.T., Nguyen, B.T., Vuong, N.T., Horn, H., 2015. Optimization of sulfide production by an indigenous consortium of sulfate-reducing bacteria for the treatment of lead-contaminated wastewater. Bioprocess and Biosystems Engineering 38 (10), 2003–2010.

Kirkland, C.M., Herrling M.P., Hiebert R., Bender A. T., Grunewald E., Walsh, D.O., Codd S.L., 2015. In situ detection of subsurface biofilm using low-field NMR: A field study. Environmental Science & Technology 49 (18), 11045–11052.

Labena, A., Hegazy, M.A., Horn, H., Muller, E., 2015. The biocidal effect of a novel synthesized gemini surfactant on environmental sulfidogenic bacteria: planktonic cells and biofilms. Mater Sci Eng C Mater Biol Appl 47, 367–375.

Lackner, S., Thoma, K., Gilbert, E.M., Gander, W., Schreff, D., Horn, H., 2015. Start-up of a full-scale deammonification SBR-treating effluent from digested sludge dewatering. Water Science and Technology 71 (4), 553–559.

Lackner, S., Welker, S., Gilbert, E.M., Horn, H., 2015. Influence of seasonal temperature fluctuations on two different partial nitritation-anammox reactors treating mainstream municipal wastewater. Water Science Technology 72 (8), 1358–1363.

Lübken, M., Koch K., Gehring T., Horn H., Wichern M., 2015. Mathematical modeling of the anaerobic digestion of energy crops. Applied Energy 142, 352–360.

Majewsky, M., Glauner, T., Horn, H., 2015. Systematic suspect screening and identification of sulfonamide antibiotic transformation products in the aquatic environment. Analytical and Bioanalytical Chemistry 407 (19), 5707–5717.

Ren, M., Frimmel, F.H., Abbt-Braun, G., 2015. Multi-cycle photocatalytic degradation of bezafibrate by a cast polyvinyl alcohol/titanium dioxide (PVA/TiO2) hybrid film. Journal of Molecular Catalysis A: Chemical 400, 42–48.

Rocktäschel, T., Klarmann C., Ochoa J., Boisson P., Sørensen K., Horn H., 2015. Treatment of municipal wastewater with aerobic granules – the relation between granulation and suspended solids in the effluent. Separation and Purification Technology 142, 234–241.

Shen, J., Mkongo, G., Abbt-Braun, G., Ceppi, S.L., Richards, B.S., Schäfer, A.I., 2015. Renewable energy powered membrane technology: Fluoride removal in a rural community in northern Tanzania. Separation and Purification Technology 149, 349-361.


Frimmel, F.H., Abbt-Braun, G., Ren, M., 2014. Photocatalytic elimination of Diatrizoate and I- formation: Influence of dissolved oxygen, metal ions and natural organic matter (NOM). Nanoscience and Nanoengineering 2 (3), 45-82.

Valencia, S., Marin, J.M., Restrepo, G., Frimmel, F.H., 2014. Evaluation of natural organic matter changes from Lake Hohloh by three-dimensional excitation-emission matrix fluorescence spectroscopy during TiO(2)/UV process. Water Research 51, 124-133.

Franz, C., Abbt-Braun, G., Lorz, C., Roig, H.L., Makeschin, F., 2014. Assessment and evaluation of metal contents in sediment and water samples within an urban watershed: an analysis of anthropogenic impacts on sediment and water quality in Central Brazil. Environmental Earth Sciences 72 (12), 4873-4890.

Horn, H., Lackner, S., 2014.  Modeling of biofilm systems: A review. Advances in Biochemical Engineering and Biotechnology 146, 53-76.

Gilbert, E.M., Agrawal, S., Karst, S.M., Horn, H., Nielsen, P.H., Lackner, S., 2014. Low temperature partial nitritation/anammox in a moving bed biofilm reactor treating low strength wastewater. Environmental Science & Technology 48 (15), 8784-8792.

Majewsky, M., Wagner, D., Delay, M., Brase, S., Yargeau, V., Horn, H., 2014. Antibacterial activity of sulfamethoxazole transformation products (TPs): general relevance for sulfonamide TPs modified at the para position. Chemical Research in Toxicology 27 (10), 1821-1828.

Walters, E., Katzl, K., Schwarzwalder, K., Rutschmann, P., Muller, E., Horn, H., 2014. Persistence of fecal indicator bacteria in sediment of an oligotrophic river: comparing large and lab-scale flume systems. Water Research 61, 276-287.

Matruglio, R., Horn, H., Wagner, M., 2014. Assessment and interpretation of the internal structure of biofilm streamers by combination of imaging techniques on two scales. Journal of Advanced Microscopy Research, 9, 79-85.

Kondrakov, A.O., Ignatev, A.N., Frimmel, F.H., Bräse, S., Horn, H., Revelsky, A.I., 2014. Formation of genotoxic quinones during bisphenol A degradation by TiO2 photocatalysis and UV photolysis: A comparative study. Applied Catalysis B: Environmental 160–161 (0), 106-114.

Herzog, B., Yuan, H., Lemmer, H., Horn, H., Muller, E., 2014. Effect of acclimation and nutrient supply on 5-tolyltriazole biodegradation with activated sludge communities. Bioresource Technology 163, 381-385.

Majewsky, M., Cavalcanti, C.B.G., Cavalcanti, C.P., Horn, H., Frimmel, F.H., Abbt-Braun, G., 2014. Estimating the trend of micropollutants in lakes as decision-making support in IWRM: a case study in Lake Paranoá, Brazil. Environmental Earth Sciences 72 (12), 4891-4900.

Fischer, K., Majewsky, M., 2014. Cometabolic degradation of organic wastewater micropollutants by activated sludge and sludge-inherent microorganisms. Applied Microbiology and Biotechnology 98 (15), 6583-6597.

Kieu, H.T., Horn, H., Muller, E., 2014. The effect of heavy metals on microbial community structure of a sulfidogenic consortium in anaerobic semi-continuous stirred tank reactors. Bioprocess and Biosystems Engineering 37 (3), 451-460.

Li, J., Ding, L.B., Cai, A., Huang, G.X., Horn, H., 2014. Aerobic sludge granulation in a full-scale sequencing batch reactor. Biomed Res Int 2014, 268789.

Labena, A., Hegazy, M.A., Horn, H., Müller, E., 2013. Cationic gemini surfactant as a corrosion inhibitor and a biocide for high salinity sulfidogenic bacteria originating from an oil-field water tank. Journal of Surfactants and Detergents 17 (3), 419-431.

Rodayan, A., Majewsky, M., Yargeau, V., 2014. Impact of approach used to determine removal levels of drugs of abuse during wastewater treatment. Science of the Total Environment 487, 731-739.

Herzog, B., Lemmer, H., Huber, B., Horn, H., Muller, E., 2014. Xenobiotic benzotriazoles--biodegradation under meso- and oligotrophic conditions as well as denitrifying, sulfate-reducing, and anaerobic conditions. Environmental Science and Pollution Research International 21 (4), 2795-2804.

Herzog, B., Lemmer, H., Helmreich, B., Horn, H., Muller, E., 2014. Monitoring benzotriazoles: a 1 year study on concentrations and removal efficiencies in three different wastewater treatment plants. Water Science and Technology 69 (4), 710-717.

Herzog, B., Lemmer, H., Helmreich, B., Horn , H., Müller, E., 2014. Screening and monitoring microbial xenobiotics’ biodegradation by rapid, inexpensive and easy to perform microplate UV-absorbance measurements. BMC Research Notes 7 (101).

Klaus, J., Zehe, E., Elsner, M., Palm, J., Schneider, D., Schröder, B., Steinbeiss, S., van Schaik, L., West, S., 2014. Controls of event-based pesticide leaching in natural soils: A systematic study based on replicated field scale irrigation experiments. Journal of Hydrology 512, 528-539.

Lackner, S., Gilbert, E.M., Vlaeminck, S.E., Joss, A., Horn, H., van Loosdrecht, M.C., 2014. Full-scale partial nitritation/anammox experiences - an application survey. Water Research 55, 292-303.

Gilbert, E.M., Agrawal, S., Brunner, F., Schwartz, T., Horn, H., Lackner, S., 2014. Response of different nitrospira species to anoxic periods depends on operational do. Environmental Science & Technology 48 (5), 2934-2941.

Walters, E., Schwarzwalder, K., Rutschmann, P., Muller, E., Horn, H., 2014. Influence of resuspension on the fate of fecal indicator bacteria in large-scale flumes mimicking an oligotrophic river. Water Research 48, 466-477.

West, S., Horn, H., Hijnen, W.A.M., Castillo, C., Wagner, M., 2014. Confocal laser scanning microscopy as a tool to validate the efficiency of membrane cleaning procedures to remove biofilms. Separation and Purification Technology 122 (0), 402-411.

Düver, D., Lehmann, K., Saravia, F., Winter, D., Koschikowski, J., Horn, H., 2014. Desalination using membrane distillation: influence of scale formation on process performance and module lifetime, Cyprus.

Walters, E., Graml, M., Behle, C., Müller, E., Horn, H., 2014. Influence of particle association and suspended solids on UV inactivation of fecal indicator bacteria in an urban river. Water, Air, and Soil Pollution 225 (1), 1822.

Ren, M., Frimmel, F. H., Abbt-Braun, G., 2014. Photocatalytic elimination of Diatrizoate and I- formation: Influence of dissolved oxygen, metal ions and natural organic matter (NOM). Nanoscience and Nanoengineering 2 (3), 45-58.


Gordalla, B.C., Ewers, U., Frimmel, F.H., 2013. Hydraulic fracturing: a toxicological threat for groundwater and drinking-water? Environmental Earth Sciences 70 (8), 3875–3893.

Herzog, B., Lemmer, H., Horn, H., Müller, E., 2013. Characterization of pure cultures isolated from sulfamethoxazole-acclimated activated sludge with respect to taxonomic identification and sulfamethoxazole biodegradation potential. BMC Microbiology 13, 276.

Herzog, B., Huber, B., Lemmer, H., Horn, H., Müller, E., 2013. Analysis and in-situ-characterization of activated sludge communities capable of benzotriazole biodegradation. Environmental Sciences Europe 25, 31. 

Valencia, S., Marín, J.M., Restrepo, G., Frimmel, F.H., 2013. Application of exication-emission fluorescence matrices and UV/Vis absorption to monitoring the photocatalyitc degradation of commercial humic substances. Science of the Total Environment 442, 207-214. 

Schwegmann, H., Ruppert, J., Frimmel, F.H., 2013. Influence of the pH-value on the photocatalytic disinfection of bacteria with TiO2 – Explanation by DLVO and XDLVO theory. Water Research 47, 1503-1511.

Valencia, S., Marín, J.M., Restrepo, G., Frimmel, F.H., 2013. Evaluations of the TiO2/simulated solar UV degradations of XAD fractions of natural organic matter from a bog lake using size-exclusion chromatography. Water Research 47, 5130-5138.

Rocktäschel, T., Klarmann, C., Helmreich, B., Ochoa, J., Boisson, P., Sørensen, K.H., Horn H., 2013. Comparison of two different anaerobic feeding strategies to establish a stable aerobic granulated sludge bed. Water Research 47, 6423 – 6431.

Majewsky, M., Farlin, J., Bayerle, M., Gallé, T., 2013. A case-study on the accuracy of removal efficiency determination for xenobiotics on full-scale wastewater treatment plants. Environmental Sciences: Processes and Impacts 15, 730-738. 

dos Santos, J.V., Mangrich, A.S., Pereira, B.F., Pillon, C.N., Novotny, E.H., Bonagamba, T.J., Abbt-Braun, G., Frimmel, F.H., 2013. 13C NMR and EPR spectroscopic evaluation of oil shale mined soil recuperation. J. Braz. Chem. Soc. 24 (2), 1–7. 

Garcés-Sanchez, G., Wilderer, P.A., Horn, H., Munch, J.-C., Lebuhn, M., 2013. Assessment of the viability of Cryptosporidium parvum oocysts with the induction ratio of hsp70 mRNA production in manure, Journal Microbiological Methods 94 (3), 280-289.

Palma, M.S.A., Horn, H., Zilli, M., Pigatto, G., Converti, A., 2013. A new rnzymatic process for the treatment of phenolic pollutants. Brazilian Archives of Biology and Technology 56, 653-662.

Koch, K., Gehring, T., Lübken, M., Wichern, M., Horn, H., 2013. Mathematical approach for improving the reliability of parameter calibration in modeling of anaerobic digestion processes. Strojarstvo 55 (1), 7-16. 

Gilbert, E.M., Müller, E., Horn, H., Lackner, S., 2013. Microbial activity of suspended biomass from a nitritation-anammox SBR in dependence of operational condition and size fraction. Applied Microbiology and Biotechnology 97 (19), 8795-8804. 

Pellicer-Nàcher, C., Domingo-Félez, C., Lackner, S., Smets, B.F., 2013. Microbial activity catalyzes oxygen transfer in membrane-aerated nitritating biofilm reactors. Journal of Membrane Science 446, 465-471.

Liu, S., Horn, H., Müller, E., 2013. A systematic insight into a single-stage deammonification process operated in granular sludge reactor with high-loaded reject-water: characterization and quantification of microbiological community. Journal of Applied Microbiology 114 (2), 339–351.

Li, J., Ma, L., Wie, S., Horn, H., 2013. Aerobic granules dwelling vorticella and rotifiers in an SBR fed with domestic waste water, Separation and Purification Technology 110, 127–131.

Lackner, S., Horn, H., 2013. Comparison of performance and operation stability in an SBR and MBBR for single stage nitritation-anammox treating industrial wastewater, Environmental Technology 34 (10), 1319-1328.

Müller, E., Vierheilig, J., Schüssler, W., Horn, H., Lemmer, H., 2013. Aerobic biodegradation of the sulfonamide antibiotic sulfamethoxazole by activated sludge and pure culture consortia, Chemosphere 92 (8), 969-978.

Farlin, J., Majewsky, M., 2013. Performance Indicators: The rducational rffect of publication pressure on young researchers in environmental sciences. Environmental Science and Technology 47 (6), 2437–2438.

Saravia, F., Klüpfel, A., Zamora Richard, A., Frimmel, F.H., 2013. Identification of nanofiltration fouling layer constituents. Desalination and Water Treatment, 1-8.


Lackner, S., Smets, B.F., 2012. Effect of the kinetics of ammonium and nitrite oxidation on nitritation success or failure for different biofilm reactor geometries. Biochemical Engineering Journal, 69, 123-129.

Delay, M., Frimmel, F.H., 2012. Nanoparticles in aquatic systems. Analytical and Bioanalytical Chemistry 402 (2), 583-592.

Geißen, S., Bennemann, H., Horn, H., Krull, R., Neumann, S., 2012. Industrieabwasserbehandlung und -recycling - Potenziale und Perspektiven. Chem. Ing. Technik 84 (7), 1005–1017.

Kumar, A., Hille-Reichel, A., Horn, H., Dewulf, J., Lens, P., Van Langenhove, H., 2012. Oxygen transport within the biofilm matrix of a membrane biofilm reactor treating gaseous toluene. Journal of Chemical Technology and Biotechnology 87 (6), 751-757.

Liu, S., Horn, H., 2012. Effects of biofilm geometry on deammonification biofilm performance - a simulation study. Bioresource Technology 116, 252-258.

Liu, S., Horn, H., 2012. Effects of Fe (II) and Fe (III) on the single-stage deammonification process treating high-strength reject water from sludge dewatering. Bioresource Technology 114, 12–19.

Lorz, C., Abbt-Braun, G., Bakker, F., Borges, P., Börnick, H., Fortes, L., Frimmel, F.H., Gaffron, A., Hebben, N., Höfer, R., Makeschin, F., Neder, K., Roig, L.H., Steiniger, B., Strauch, M., Walde, D., Weiß, H., Worch, E., Wummel, J., 2012. Challenges of an integrated water resource management for the Distrito Federal, Western Central Brazil: climate, land-use and water resources. Envorimental Earth Science, 1575 – 1586.

Martinez-Sosa, D., Helmreich, B., Horn, H., 2012. Anaerobic submerged membrane bioreactor (AnSMBR) treating low-strength wastewater at psychrophilic temperature (20 °C) under critical and supra-critical flux conditions. Process Biochemistry 47, 792–798.

Montag, D., Frant, M., Horn, H., Liefeith, K., 2012. Dependence of the initial adhesion of biofilm forming Pseudomonas putida mt2 on physico-chemical material properties. Biofouling 28 (3), 315–327.

Peng, Y., Guo, J., Horn, H., Yang, X., Wang, S., 2012. Achieving nitrite accumulation in a continuous system treating low-strength domestic wastewater: switchover from batch start-up to continuous operation with process control. Appl. Microbiol. Biotechnol. 94 (2), 517-526.

Lackner, S., Horn, H., 2012. Evaluating operation strategies and process stability of a single stage nitritation-anammox SBR by use of the oxidation-reduction potential (ORP). Bioresource Technology 107, 70–77.

Lackner, S., Lindenblatt, C., Horn, H., 2012. 'Swinging ORP' as operation strategy for stable reject water treatment by Deammonification in Sequencing Batch Reactors. Chemical Engineering Journal 180, 190– 196.

Saravia, F., Zwiener, C., Frimmel, F., 2012. Influence of PAC properties on membrane performance in a PAC-UF hybrid system. Water Science Technology: Water Supply 12 (4), 496 - 503.

Simstich, B., Beimfohr, C., Horn, H., 2012. Lab scale experiments using a submerged MBR under thermophilic aerobic conditions for the treatment of paper mill deinking wastewater. Bioresource Technology 122, 11–16.

Taherzadeh, D., Picioreanu, C., Horn, H., 2012. Mass Transfer Enhancement in Moving Biofilm Structures. Biophysical Journal 102 (7), 1483-1492.

Valencia, S., Marín, J., Velásquez, J., Restrepo, G., Frimmel, F.H., 2012. Study of pH effects on the evolution of properties of brown-water natural organic matter as revealed by size-exclusion chromatography during photocatalytic degradation. Water Research 46, 1198-1206.

Valencia, S., Marín, J. M., Restrepo, G., Frimmel, F. H., 2012. Application of excitation-emission fluorescence matrices and UV/Vis absorption to monitoring the photocatalytic degradation of commercial humic acid. Science of the Total Environment 442, 207-214.


Delay, M., Dolt, T., Woellhaf, A., Sembritzki, R., Frimmel, F.H., 2011. Interactions and stability of silver nanoparticles in the aqueous phase: Influence of natural organic matter (NOM) and ionic strength. Journal of Chromatography A 1218 (27), 4206-4212.

Klüpfel, A.M., Glauner, T., Zwiener, C., Frimmel, F.H., 2011. Nanofiltration for enhanced removal of disinfection by-products (DBP) precursrs in swimming pool water-retention and water qualtiy estimation. Water Science and Technology 63 (8), 1716-1725.

Schmalz, C., Frimmel, F.H., Zwiener, C., 2011. Trichloramine in swimming pools - Formation and mass transfer. Water Research 45 (8), 2681-2690.

Lorz, C., Abbt-Braun, G., Bakker, F., Borges, P., Börnick, H., Fortes, L., Frimmel, F. H., Gaffron, A., Hebben, N., Höfer, R., Makeschin, F., Neder, K., Roig, L. H., Steiniger, B., Strauch, M., Walde, D., Weiß, H., Worch, E., Wummel, J.: Challenges of an integrated water resource management for the Distrito Federal, Western Central Brazil: climate, land-use and water resources. Envorimental Earth Science, Published online 28 July 2011, DOI 10.1007/s12665-011-1219-1.

Schmalz, C., Wunderlich, H.G., Heinze, R., Frimmel, F.H., Zwiener, C., Grummt, T., 2011. Application of an optimized system for the well-defined exposure of human lung cells to trichloramine and indoor pool air. Journal of Water and Health 9 (3), 586-596.

Tercero Espinoza, L.A., ter Haseborg, E., Weber, M., Karle, E., Peschke, R., Frimmel, F.H., 2011. Effect of selected metal ions on the photocatalytic degradation of bog lake water natural organic matter. Water Research 45, 1039-1048.

Valencia, S., Marín, J., Restrepo, G., Frimmel, F.H., 2011. Evaluation of photocatalytic degradation of a commercial humic acid in water using a simulated solar UV irradiation and monitoring the changes by size exclusion chromatography. Water Science and Technology: Water Supply 11 (6), 692 – 698.


Alkhoury, W., Ziegmann, M., Frimmel, F.H., Abbt-Braun, G., Salameh, E., 2010. Water quality of the King Abdullah Canal/Jordan-impact on eutrophication and water disinfection. Toxicological and Environmental Chemistry 92 (5), 855-877.

Tercero Espinoza, L.A., Malerba, R.R., Frimmel, F.H., 2010. Influence of dissolved organic carbon source, photocatalyst identity and copper(II) ions on the formation of bromoform in irradiated titanium dioxide suspensions. Catalysis Today 151 (1-2), 84-88.

Klüpfel, A.M., Frimmel, F.H., 2010. Nanofiltration of river water - fouling, cleaning and micropollutant rejection. Desalination 250 (3), 1005-1007.

Metreveli, G., Abbt-Braun, G., Frimmel, F.H., 2010. Influence of NOM on the mobility of metal(loid)s in water-saturated porous media. Aquatic Geochemistry 16 (1), 85-100.

Schwegmann, H., Feitz, A.J., Frimmel, F.H., 2010. Influence of the zeta potential on the sorption and toxicity of iron oxide nanoparticles on S. cerevisiae and E. coli. Journal of Colloid and Interface Science 347 (1), 43-48.

ter Haseborg, E., Zamora, T.M., Frohlich, J., Frimmel, F.H., 2010. Nitrifying microorganisms in fixed-bed biofilm reactors fed with different nitrite and ammonia concentrations. Bioresource Technology 101 (6), 1701-1706.

Ziegmann, M., Abert, M., Müller, M., Frimmel, F.H., 2010. Use of fluorescence fingerprints for the estimation of bloom formation and toxin production of Microcystis aeruginosa. Water Research 44 (1), 195-204.

Ziegmann, M., Frimmel, F.H., 2010. Photocatalytic degradation of clofibric acid, carbamazepine and iomeprol using conglomerated TiO(2) and activated carbon in aqueous suspension. Water Science and Technology 61 (1), 273-281.

Ziegmann, M., Saravia, F., Torres, P.A., Frimmel, F.H., 2010. The hybrid process TiO2/PAC: performance of membrane filtration. Water Science and Technology 62 (5), 1205-1212.

Jobelius, C., Ruth, B., Griebler, C., Meckenstock, R. U., Hollender, J., Reineke, A., Frimmel, F. H., Zwiener, C., 2010. Metabolites indicate hot spots of biodegradation and biogeochemical gradients in a high-resolution monitoring well. Environmental Sci. Technol. http://pubs.acs.org/toc/esthag/0/0.