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Enhancing electron transfer by ferroferric oxide during the anaerobic treatment of synthetic wastewater with mixed organic carbon.
- Source :
-
International Biodeterioration & Biodegradation . Apr2017, Vol. 119, p104-110. 7p. - Publication Year :
- 2017
-
Abstract
- Conductive materials can enhance direct interspecies electron transfer (DIET) during the anaerobic treatment of wastewater and provide ecological advantages for syntrophic methane (CH 4 ) production. The effects of ferroferric oxide (Fe 3 O 4 ) on the system performance and microbial communities were examined during the anaerobic treatment of synthetic wastewater with mixed organic carbon. The addition of Fe 3 O 4 did not enhance the relative abundance of methanogens, but increased the maximum CH 4 production rate by 15.4% and shortened the lag phase by 13.9%. Methanosarcina was the predominant methanogen contributing to DIET. Proteiniclasticum and Kosmotoga were dominant upon the addition of Fe 3 O 4 and were responsible for protein degradation. More extracellular proteins were produced and a filamentous morphology was observed upon the addition of Fe 3 O 4 . Short-term Fe 3 O 4 addition also improved the performance of the anaerobic treatment in the control reactor, and the Fe 3 O 4 rather than the microbial morphology was the more important factor enhancing DIET. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09648305
- Volume :
- 119
- Database :
- Academic Search Index
- Journal :
- International Biodeterioration & Biodegradation
- Publication Type :
- Academic Journal
- Accession number :
- 122038920
- Full Text :
- https://doi.org/10.1016/j.ibiod.2016.09.023