Magnetite Triggering Enhanced Direct Interspecies Electron Transfer: A Scavenger for the Blockage of Electron Transfer in Anaerobic Digestion of High-Solids Sewage Sludge

Environmental Science & Technology
Tao WangXiaohu Dai

Abstract

At present, high-solids anaerobic digestion of sewage sludge has drawn great attention due to the superiority of its small land area footprint and low energy consumption. However, a high organic loading rate may cause acids accumulation and ammonia inhibition, thus leading to an inhibited pseudo-steady state in which electron transfer through interspecies hydrogen transfer (IHT) between acetogens and methanogens is blocked. In this study, adding 50 mg/g TS (total solid) magnetite clearly reduced the accumulation of short-chain fatty acids and accelerated methane production by 26.6%. As demonstrated, the individual processes of anaerobic digestion could not be improved by magnetite when methanogenesis was interrupted. Analyzing stable carbon isotopes and investigating the methanogenesis pathways using acetate and H2/CO2 as substrates together proved that direct interspecies electron transfer (DIET) was enhanced by magnetite. Metatranscriptomic analysis and determination of key enzymes showed that IHT could be partially substituted by enhanced DIET, and acetate-dependent methanogenesis was improved after the blockage of electron transfer was scavenged. Additionally, the expression of both pili and c-type cytochromes was found to ...Continue Reading

References

Feb 4, 2006·Science·Andre NelNing Li
Oct 12, 2007·Chemical Reviews·Paulette M Vignais, Bernard Billoud
Apr 2, 2008·Annals of the New York Academy of Sciences·Michael J McInerneyRobert P Gunsalus
Nov 26, 2008·Water Science and Technology : a Journal of the International Association on Water Pollution Research·J GuendouzJ-P Delgenes
Mar 17, 2010·Waste Management·Shishir Kumar BeheraHung-Suck Park
Oct 19, 2011·Environmental Microbiology·Souichiro KatoKazuya Watanabe
Apr 5, 2012·Faraday Discussions·Nicholas F PolizziDavid N Beratan
Feb 5, 2013·Applied and Environmental Microbiology·Pravin Malla ShresthaDerek R Lovley
Aug 8, 2013·Environmental Science & Technology·Shenghua JiangHor-Gil Hur
May 20, 2014·Applied and Environmental Microbiology·Amelia-Elena RotaruDerek R Lovley
May 28, 2014·Current Opinion in Biotechnology·Nikhil S Malvankar, Derek R Lovley
Jun 6, 2014·Environmental Science & Technology·Carolina Cruz ViggiFederico Aulenta
Oct 7, 2014·Bioresource Technology·Shanshan ChenDerek R Lovley
Sep 17, 2015·Nature·Shawn E McGlynnVictoria J Orphan
Oct 23, 2015·FEMS Microbiology Ecology·Han WangIrini Angelidaki
Jun 29, 2016·Environmental Science. Processes & Impacts·Qiwen Cheng, Douglas F Call
Nov 7, 2016·Trends in Biotechnology·Pier-Luc TremblayTian Zhang
Apr 28, 2017·Environmental Microbiology·Andreia F SalvadorM Madalena Alves
Jul 13, 2017·Annual Review of Microbiology·Derek R Lovley

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Citations

Nov 12, 2020·Journal of Bioscience and Bioengineering·Elvira E ZiganshinaAyrat M Ziganshin
Aug 28, 2020·Environmental Science & Technology·Miao YanIrini Angelidaki
Nov 18, 2021·Environmental Science & Technology·Xuran LiuDongbo Wang
Nov 21, 2021·The Science of the Total Environment·Zhi-Man YangXiao-Huan Dong

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