Electrochemical behaviors of biochar materials during pollutant removal in wastewater: A review

被引：41
作者：
Tian, Ran [1 ,2 ]
Dong, Haoran [1 ,2 ]
Chen, Jie [1 ,2 ]
Li, Rui [1 ,2 ]
Xie, Qianqian [1 ,2 ]
Li, Long [1 ,2 ]
Li, Yangju [1 ,2 ]
Jin, Zilan [1 ,2 ]
Xiao, Shuangjie [1 ,2 ]
Xiao, Junyang [1 ,2 ]
机构：
[1] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China
[2] Hunan Univ, Minist Educ, Key Lab Environm Biol & Pollut Control, Changsha 410082, Hunan, Peoples R China
来源：
CHEMICAL ENGINEERING JOURNAL | 2021年 / 425卷
基金：
中国国家自然科学基金;
关键词：
Biochar; Electrochemical behaviors; Electron donor; Electron acceptor; Electron shuttle; Wastewater treatment; PERSISTENT FREE-RADICALS; OF-THE-ART; ELECTRON-TRANSFER MEDIATOR; OXYGEN SPECIES GENERATION; BLACK CARBON; PERSULFATE ACTIVATION; ORGANIC POLLUTANTS; DOPED GRAPHENE; STRUCTURAL-PROPERTIES; STRUCTURE DEPENDENCE;
D O I：
10.1016/j.cej.2021.130585
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Pivotal water decontamination research has pushed carbon materials thriving and flourishing in recent years. Biochar with merit of electrochemical properties has involved in various redox reactions in water. In this review, electrochemical behaviors (e.g., electron donor, electron acceptor, electron shuttle) of biochar in response to the electrochemical structures (e.g., surface moieties, carbon matrix structures) were systematically compiled as well as the influence from biomass sources and fabrication process including carbonization techniques, pretreatment/modified methods. The impact of solution pH and co-existed substances on the electrochemical behaviors were also included. Furthermore, the approaches that quantitatively determined the electron donating/accepting capacity of biochar were thoroughly analyzed. Finally, some future research prospects are proposed to promote knowledge innovation and underpin practical application. This review aims to provide guidance in taking advantage of electrochemical property of biochar during wastewater purification.
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页数：21
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