Advances in preparation,application in contaminant removal,and environmental risks of biochar-based catalysts:a review  

作　　者：Bowen Yang Jiawei Dai Yuan Zhao Jingwei Wu Caiya Ji Yuhu Zhang 

机构地区：[1]College of Resource Environment and Tourism,Capital Normal University,Beijing 100048,China [2]School of Environmental and Safety Engineering,Changzhou University,Changzhou 213164,China

出　　处：《Biochar》2022年第1期327-357,共31页生物炭（英文）

基　　金：the National Natural Science Foundation of China under Grant 41671331,the Innovative Approaches Special Project of the Ministry of Science and Technology of China under Grant(2020IM020300);the Beijing-Tianjin-Hebei Collaborative Innovation Promotion Project,China(Z201100006720001);the National Key Research and Development Program of China under Grant 2016YFA0600103.

摘　　要：As a carbon-rich material produced by pyrolysis of biomass,biochar features low cost,large specific surface area,and widely available feedstocks based on the functional diversity and environmental-friendly properties,it has received increasing attention in the fields of pollutant removal due to three win-win effects of water remediation,carbon sequestration and reutilization of wastes.To design excellent biochar-based catalysts for environmental applications,one must understand recent advances in the catalysts for contaminant removal.This review focuses on the current application of biochar-based catalysts in redox systems,Fenton-like systems,sonocatalytic systems and photocatalytic systems.Besides in-depth discussion in effects of preparation conditions on physicochemical characteristics of biochars,the review supplements new preparation technologies of biochar and biochar-based catalysts.Most importantly,the advantages/shortcomings,catalysis mechanisms,as well as the pollutant removal ability of different types of biochar-based catalysts are discussed.The environmental risks of the catalyst applications are also elaborated on.Future research on biochar-based catalyst production and its environmental applications is discussed.The review provides a good overview of the current advances of biochar-based catalysts in pollutant control and the future research directions.

关 键 词：Biochar-based catalysts Sonocatalysts Fenton-like catalysts Photocatalysts Pollutant removal Environmental risks 

分 类 号：O64[理学—物理化学]