Effects of Biowaste-Derived Hydrochar on Anaerobic Digestion:Insights into Hydrochar Characteristics  

作　　者：Hongqiong Zhang Xu Wang Zhaojing Qian Buchun Si Kai Jin Tengfei Wang 

机构地区：[1]Key Laboratory of Agricultural Renewable Resource Utilization Technology,College of Engineering,Northeast Agriculture University,Harbin,150030,China [2]College of Engineering,Northeast Agricultural University,Harbin,150030,China [3]College of Food Science,Northeast Agricultural University,Harbin,150030,China [4]Laboratory of Environment-Enhancing Energy(E2E),Key Laboratory of Agricultural Engineering in Structure and Environment,Ministry of Agriculture,College of Water Resources and Civil Engineering,China Agricultural University,Beijing,100083,China [5]Faculty of Geosciences and Environmental Engineering,Southwest Jiao Tong University,Chengdu,611756,China

出　　处：《Journal of Renewable Materials》2023年第10期3647-3657,共11页可再生材料杂志（英文）

基　　金：supported by the Opening Project of Key Laboratory of Agricultural Renewable Resource Utilization Technology (No.HLJHDNY2104);Funding for the National Natural Science Foundation of China (NSFC U21A20162);Heilongjiang Postdoctoral Financial Assistance (LBH-Z21042);University Nursing Program for Young Scholars with Creative Talents in Heilongjiang Province (UNPYSCT-2020106);Sichuan Science and Technology Program (2022NSFSC1162).

摘　　要：Hydrochar prepared with four typical biowastes,pine wood,food waste,digested sewage sludge,and Chlorella were applied for the promotion of anaerobic digestion.The gas production and substrate composition were analyzed associated with the hydrochar characteristics.The results suggested that Chlorella hydrochar(C-C)showed the highest cumulative yield of methane(approximately 345 mL)with high total organic carbon(TOC)removal efficiency and low volatile fatty acids(VAFs)concentration.Especially,food waste hydrochar(F-C)showed a poor effect on anaerobic digestion and aroused 1.4–1.6 g/L accumulation of VAFs,in which the toxic components may account for the low efficiency.The C-C and sludge hydrochar(S-C)may develop direct interspecific electron transport(DIET)to facilitate the generation of methane by both surface groups and conductivity of the body structure,unlike pinewood hydrochar(P-C),which mainly depended on the aromatic matrix structure of hydrochar body.This work suggested that C-C can be the best candidate for the facilitation of anaerobic digestion,and N-containing biowaste like algae and lignocellulose like pine wood may establish different DIET pathways based on the physicochemical characteristics of hydrochar.

关 键 词：BIOWASTE hydrochar DIET anaerobic digestion METHANE 

分 类 号：X70[环境科学与工程—环境工程]