PMID- 29091852 OWN - NLM STAT- MEDLINE DCOM- 20180530 LR - 20181202 IS - 1873-2976 (Electronic) IS - 0960-8524 (Linking) VI - 249 DP - 2018 Feb TI - Roles of magnetite and granular activated carbon in improvement of anaerobic sludge digestion. PG - 666-672 LID - S0960-8524(17)31876-X [pii] LID - 10.1016/j.biortech.2017.10.047 [doi] AB - Granular activated carbon (GAC) or magnetite could promote methane production from organic wastes, but their roles in enhancing anaerobic sludge digestion have not been clarified. GAC, magnetite and their combination were complemented into sludge digesters, respectively. Experimental results showed that average methane production increased by 7.3% for magnetite, 13.1% for GAC, and 20% for the combination of magnetite and GAC, and the effluent TCOD of the control, magnetite, GAC and magnetite-GAC digesters on day 56 were 53.2, 49.6, 48.0 and 46.6 g/L, respectively. Scanning electron microscope (SEM), nitrogen adsorption, Fourier transform infrared spectroscopy (FTIR) and microbial analysis indicated that magnetite enriched iron-reducing bacteria responsible for sludge hydrolysis while GAC enhanced syntrophic metabolism between iron-reducing bacteria and methanogens due to its high electrical conductivity and large surface area. Supplementing magnetite and GAC together into an anaerobic digester simultaneously accelerated sludge hydrolysis and methane production, resulting in better sludge digestion performance. CI - Copyright (c) 2017 Elsevier Ltd. All rights reserved. FAU - Peng, Hong AU - Peng H AD - Key Laboratory of Industrial Ecology and Environmental Engineering (Dalian University of Technology), Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China; Department of Environment Science, College of Environmental Sciences, Sichuan Agricultural University-Chengdu Campus, Chengdu, Sichuan 611130, China. FAU - Zhang, Yaobin AU - Zhang Y AD - Key Laboratory of Industrial Ecology and Environmental Engineering (Dalian University of Technology), Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China. Electronic address: zhangyb@dlut.edu.cn. FAU - Tan, Dongmei AU - Tan D AD - Department of Environment Science, College of Environmental Sciences, Sichuan Agricultural University-Chengdu Campus, Chengdu, Sichuan 611130, China. FAU - Zhao, Zhiqiang AU - Zhao Z AD - Key Laboratory of Industrial Ecology and Environmental Engineering (Dalian University of Technology), Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China. FAU - Zhao, Huimin AU - Zhao H AD - Key Laboratory of Industrial Ecology and Environmental Engineering (Dalian University of Technology), Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China. FAU - Quan, Xie AU - Quan X AD - Key Laboratory of Industrial Ecology and Environmental Engineering (Dalian University of Technology), Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China. LA - eng PT - Journal Article DEP - 20171020 PL - England TA - Bioresour Technol JT - Bioresource technology JID - 9889523 RN - 0 (Sewage) RN - 16291-96-6 (Charcoal) RN - OP0UW79H66 (Methane) RN - XM0M87F357 (Ferrosoferric Oxide) SB - IM MH - Anaerobiosis MH - Bioreactors MH - *Charcoal MH - Ferrosoferric Oxide MH - Hydrolysis MH - *Methane MH - Sewage OTO - NOTNLM OT - Anaerobic sludge digestion OT - Granular activated carbon OT - Hydrolysis OT - Magnetite OT - Methane production EDAT- 2017/11/02 06:00 MHDA- 2018/05/31 06:00 CRDT- 2017/11/02 06:00 PHST- 2017/08/09 00:00 [received] PHST- 2017/10/08 00:00 [revised] PHST- 2017/10/11 00:00 [accepted] PHST- 2017/11/02 06:00 [pubmed] PHST- 2018/05/31 06:00 [medline] PHST- 2017/11/02 06:00 [entrez] AID - S0960-8524(17)31876-X [pii] AID - 10.1016/j.biortech.2017.10.047 [doi] PST - ppublish SO - Bioresour Technol. 2018 Feb;249:666-672. doi: 10.1016/j.biortech.2017.10.047. Epub 2017 Oct 20.