Hollow fiber membrane bioreactor affects microbial community and morphology of the DAMO and Anammox co-culture system
| Autor: | Jing Ding, Liang Fu, Ya-Nan Bai, Raymond J. Zeng, Zhao-Wei Ding, Yong-Ze Lu |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Microbiological Techniques
0301 basic medicine Environmental Engineering Microorganism Bioengineering 010501 environmental sciences 01 natural sciences Microbiology 03 medical and health sciences Denitrifying bacteria Bioreactors Ammonium Compounds Bioreactor Anaerobiosis Waste Management and Disposal 0105 earth and related environmental sciences Bacteria biology Renewable Energy Sustainability and the Environment Membranes Artificial General Medicine biology.organism_classification Archaea Biota Coculture Techniques 030104 developmental biology Microbial population biology Anammox Environmental chemistry Anaerobic oxidation of methane Denitrification Methane Oxidation-Reduction |
| Zdroj: | Bioresource Technology. 232:247-253 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2017.02.048 |
| Popis: | Denitrifying anaerobic methane oxidation (DAMO) and Anammox co-culture system was investigated in hollow fiber membrane bioreactor (HfMBR) for the change of microbial community morphology and proportion. NO3--N and NH4+-N removal rates reached 85.33 and 37.95mg/L/d on 193d. The inoculum microorganisms were flocs and the proportion of DAMO archaea, DAMO bacteria and Anammox bacteria was 11.0, 24.2 and 0.4%, respectively, but it changed to 74.3, 11.8, 5.6% in HfMBR, respectively. Interestingly, microorganisms formed biofilms on fibers surface and the biofilms included two layers: inner layer was thin and dominated by DAMO bacteria and Anammox bacteria; while the outer layer was thick made up of granules with 100-200μm diameter and dominated by DAMO archaea. The spatial distribution of microorganisms in HfMBR was different from simulation results in the literature. Likely, HfMBR changed the interaction between DAMO and Anammox microorganisms, and the reactor configuration was beneficial for DAMO archaea growth. |
| Databáze: | OpenAIRE |
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