caa a22 4500 465824137 CHVBK 20180323112144.0 cr unu---uuuuu 170327e19900601xx s 000 0 eng 10.1007/BF00164535 doi (NATIONALLICENCE)springer-10.1007/BF00164535 Early stages in biofilm development in methanogenic fluidized-bed reactors [Elektronische Daten] [Anne Lauwers, Wolfgang Heinen, Leon Gorris, Chris van der Drift] Summary: Biofilm development in methanogenic fluidized-bed reactors with sand as the carrier was studied on a laboratory scale. The microorganisms present in consecutive layers of the biofilm of mature sludge granules were preliminarily characterized on the basis of their morphology, element composition and adhesion capacity and were compared to bacteria which take part in the initial colonization of sand. The early phase of biofilm development was monitored with reactors receiving waste-waters containing different mixtures of volatile fatty acids and inoculated with fluidized-bed reactor effluent for different lengths of time. The results obtained indicate that facultative anaerobic bacteria abundantly present in the outermost biofilm layers of mature sludge granules are probably the main primary colonizers of the sand. Methanothrix spp. or other methanogens were rarely observed among the primary colonizers. The course of biofilm formation was comparable under the various start-up conditions employed including variations in waste-water composition, inoculation and anaerobicity. However, omission of waste-water and thus of substrate resulted in rapid wash-out of the attached biomass. Springer-Verlag, 1990 Lauwers Anne Department of Microbiology and Evolution Biology, Faculty of Science, University of Nijmegen, Toernooiveld, NL-6525 ED, Nijmegen, The Netherlands aut Heinen Wolfgang Department of Microbiology and Evolution Biology, Faculty of Science, University of Nijmegen, Toernooiveld, NL-6525 ED, Nijmegen, The Netherlands aut Gorris Leon Department of Microbiology and Evolution Biology, Faculty of Science, University of Nijmegen, Toernooiveld, NL-6525 ED, Nijmegen, The Netherlands aut van der Drift Chris Department of Microbiology and Evolution Biology, Faculty of Science, University of Nijmegen, Toernooiveld, NL-6525 ED, Nijmegen, The Netherlands aut Applied Microbiology and Biotechnology Springer-Verlag 33/3(1990-06-01), 352-358 0175-7598 33:3<352 1990 33 253 https://doi.org/10.1007/BF00164535 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00164535 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lauwers Anne Department of Microbiology and Evolution Biology, Faculty of Science, University of Nijmegen, Toernooiveld, NL-6525 ED, Nijmegen, The Netherlands aut NATIONALLICENCE 700 1- Heinen Wolfgang Department of Microbiology and Evolution Biology, Faculty of Science, University of Nijmegen, Toernooiveld, NL-6525 ED, Nijmegen, The Netherlands aut NATIONALLICENCE 700 1- Gorris Leon Department of Microbiology and Evolution Biology, Faculty of Science, University of Nijmegen, Toernooiveld, NL-6525 ED, Nijmegen, The Netherlands aut NATIONALLICENCE 700 1- van der Drift Chris Department of Microbiology and Evolution Biology, Faculty of Science, University of Nijmegen, Toernooiveld, NL-6525 ED, Nijmegen, The Netherlands aut NATIONALLICENCE 773 0- Applied Microbiology and Biotechnology Springer-Verlag 33/3(1990-06-01), 352-358 0175-7598 33:3<352 1990 33 253 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer