| Title: | Potential of biogas residue biochar modified by ferric chloride for the enhancement of anaerobic digestion of food waste |
| Author(s): | Li X; Chu S; Wang P; Li K; Su Y; Wu D; Xie B; |
| Address: | "Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, PR China; Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, PR China. Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, PR China; Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, PR China; Engineering Research Center for Nanophotonics and Advanced Instrument, Ministry of Education, East China Normal University, Shanghai 200062, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China. Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, PR China; Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, PR China; Engineering Research Center for Nanophotonics and Advanced Instrument, Ministry of Education, East China Normal University, Shanghai 200062, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China. Electronic address: bxie@des.ecnu.edu.cn" |
| DOI: | 10.1016/j.biortech.2022.127530 |
| ISSN/ISBN: | 1873-2976 (Electronic) 0960-8524 (Linking) |
| Abstract: | "Biogas residue biochar (BRB) and BRB modified by ferric chloride (BRB-FeCl(3)) were applied to promote anaerobic digestion (AD) of food waste (FW), related mechanisms were also proposed in this study. Results indicated BRB-FeCl(3) showed higher specific surface area, more abundant functional groups and impregnate iron than BRB, and they respectively increased 22.50% and 12.79% cumulative methane yields compared with control group because of accelerated volatile fatty acids (VFAs) transformation, which were confirmed by enhanced metabolism of glycolysis, fatty acid degradation and pyruvate. BRB, especially BRB-FeCl(3) facilitated the growth of Syntrophomonas, Methanofollis, Methanoculleus and Methanosarcina, which further promoted the methanogenesis by enhancing the metabolic activities of methanol, dimethylamine and methylamine pathways, thereby causing more metabolically diverse methanogenic pathways. Metagenomics analysis revealed BRB, especially BRB-FeCl(3) promoted the relative abundances of functional genes involved in direct interspecies electron transfer (DIET). Present study explored the enhancement mechanisms and feasibility of BRB-FeCl(3) for AD process" |
| Keywords: | Anaerobiosis *Biofuels Bioreactors Charcoal Chlorides Ferric Compounds Food Methane/metabolism *Refuse Disposal Direct interspecies electron transfer FeCl(3) modification Metagenomics Methanogenic pathways Microbial community; |
| Notes: | "MedlineLi, Xunan Chu, Siqin Wang, Panliang Li, Kaiyi Su, Yinglong Wu, Dong Xie, Bing eng England 2022/07/01 Bioresour Technol. 2022 Sep; 360:127530. doi: 10.1016/j.biortech.2022.127530. Epub 2022 Jun 27" |
