A critical review on biochar for enhancing biogas production from anaerobic digestion of food waste and sludge

JOURNAL OF CLEANER PRODUCTION

卷:305

Review

Kumar, Manish^1,2  Dutta, Shanta²  You, Siming³  Luo, Gang^4,5  Zhang, Shicheng^4,5  Show, Pau Loke⁶  Sawarkar, Ankush D.⁷  Singh, Lal¹  Tsang, Daniel C. W.² 

[1] CSIR Natl Environm & Engn Res Inst CSIR NEERI, Nagpur 440020, Maharashtra, India

[2] Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hung Hom, Kowloon, Hong Kong, Peoples R China

[3] Univ Glasgow, James Watt Sch Engn, Glasgow G12 8QQ, Lanark, Scotland

[4] Fudan Univ, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Prev, Shanghai 200433, Peoples R China

[5] Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

[6] Univ Nottingham Malaysia, Fac Sci & Engn, Dept Chem & Environm Engn, Jalan Broga, Semenyih 43500, Selangor Darul, Malaysia

[7] Visvesvaraya Natl Inst Technol VNIT, Dept Comp Sci & Engn, Nagpur 440010, Maharashtra, India

关键词: Waste valorization;    Pyrolysis;    Black carbon;    Biomethane production;    Circular economy;    Environmental sustainability;   

DOI  :  10.1016/j.jclepro.2021.127143

来源: Elsevier

【 摘 要 】

The conversion of food waste and sludge into biogas via anaerobic digestion technology is gaining attention in recent years, which plays a significant role in waste valorization into bioenergy and promotes environmental sustainability. Biochar is a carbonaceous material produced via thermochemical conversion of biomass waste, and tailoring biochar for diverse environmental applications adheres to the principle of circular economy. The emerging application of biochar as an additive in the anaerobic digestion of food waste and sludge has been intensively investigated in the last few years. However, a comprehensive understanding of multifunctional roles of biochar and its mechanisms in the production of biogas via miscellaneous/complex anaerobic digestion process is yet to be attained. This review scrutinizes the key roles of biochar as an additive and emphasizes the influences of biochar characteristics on the anaerobic digestion processes and their capability to address the foremost challenges. This review also evaluates the techno-economic and environmental impacts of biochar synthesis and its emerging application for biogas production via anaerobic digestion to make the integrated process more economical and environmentally sustainable, and identifies challenges and prospects for future studies. (C) 2021 Elsevier Ltd. All rights reserved.

【 授权许可】

Free