Effect of substrate composition (C/N/P ratio) on microbial community and membrane fouling tendency of biomass in membrane bioreactors
In this study, biomass characteristics including bacterial community, extracellular polymeric substances (EPS) production, and membrane fouling propensity were examined when the membrane bioreactors (MBRs) were fed with different substrates (i.e., different C/N/P ratios). Denaturing gradient gel ele...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Online Access: | https://hdl.handle.net/10356/97632 http://hdl.handle.net/10220/12094 |
| _version_ | 1826122641718640640 |
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| author | Wu, Bing Yi, Shan Fane, Anthony Gordon |
| author2 | Singapore Membrane Technology Centre |
| author_facet | Singapore Membrane Technology Centre Wu, Bing Yi, Shan Fane, Anthony Gordon |
| author_sort | Wu, Bing |
| collection | NTU |
| description | In this study, biomass characteristics including bacterial community, extracellular polymeric substances (EPS) production, and membrane fouling propensity were examined when the membrane bioreactors (MBRs) were fed with different substrates (i.e., different C/N/P ratios). Denaturing gradient gel electrophoresis (DGGE) analysis revealed that significant shifts of bacterial communities happened when increasing nitrogen or phosphorus loading in the MBRs, which followed in an almost similar way. At steady state, the biomass from the low C/N- and C/P-MBRs had comparable concentrations and produced similar EPS levels as those in the control MBR. However, the median particle size increased when the MBRs fed with low C/N- or C/P- substrate, possibly associated with the filamentous bacteria propagating in the MBRs. Increasing nitrogen or phosphorus loading 1-fold could not induce more serious membrane fouling compared to the control MBR. |
| first_indexed | 2024-10-01T05:51:29Z |
| format | Journal Article |
| id | ntu-10356/97632 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:51:29Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/976322020-03-07T12:48:43Z Effect of substrate composition (C/N/P ratio) on microbial community and membrane fouling tendency of biomass in membrane bioreactors Wu, Bing Yi, Shan Fane, Anthony Gordon Singapore Membrane Technology Centre DRNTU::Science::Biological sciences In this study, biomass characteristics including bacterial community, extracellular polymeric substances (EPS) production, and membrane fouling propensity were examined when the membrane bioreactors (MBRs) were fed with different substrates (i.e., different C/N/P ratios). Denaturing gradient gel electrophoresis (DGGE) analysis revealed that significant shifts of bacterial communities happened when increasing nitrogen or phosphorus loading in the MBRs, which followed in an almost similar way. At steady state, the biomass from the low C/N- and C/P-MBRs had comparable concentrations and produced similar EPS levels as those in the control MBR. However, the median particle size increased when the MBRs fed with low C/N- or C/P- substrate, possibly associated with the filamentous bacteria propagating in the MBRs. Increasing nitrogen or phosphorus loading 1-fold could not induce more serious membrane fouling compared to the control MBR. 2013-07-24T03:35:18Z 2019-12-06T19:44:46Z 2013-07-24T03:35:18Z 2019-12-06T19:44:46Z 2012 2012 Journal Article Wu, B., Yi, S., & Fane, A. G. (2012). Effect of Substrate Composition (C/N/P ratio) on Microbial Community and Membrane Fouling Tendency of Biomass in Membrane Bioreactors. Separation Science and Technology, 47(3), 440-445. 0149-6395 https://hdl.handle.net/10356/97632 http://hdl.handle.net/10220/12094 10.1080/01496395.2011.621503 en Separation science and technology © 2012 Taylor & Francis Group, LLC. |
| spellingShingle | DRNTU::Science::Biological sciences Wu, Bing Yi, Shan Fane, Anthony Gordon Effect of substrate composition (C/N/P ratio) on microbial community and membrane fouling tendency of biomass in membrane bioreactors |
| title | Effect of substrate composition (C/N/P ratio) on microbial community and membrane fouling tendency of biomass in membrane bioreactors |
| title_full | Effect of substrate composition (C/N/P ratio) on microbial community and membrane fouling tendency of biomass in membrane bioreactors |
| title_fullStr | Effect of substrate composition (C/N/P ratio) on microbial community and membrane fouling tendency of biomass in membrane bioreactors |
| title_full_unstemmed | Effect of substrate composition (C/N/P ratio) on microbial community and membrane fouling tendency of biomass in membrane bioreactors |
| title_short | Effect of substrate composition (C/N/P ratio) on microbial community and membrane fouling tendency of biomass in membrane bioreactors |
| title_sort | effect of substrate composition c n p ratio on microbial community and membrane fouling tendency of biomass in membrane bioreactors |
| topic | DRNTU::Science::Biological sciences |
| url | https://hdl.handle.net/10356/97632 http://hdl.handle.net/10220/12094 |
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