生物炭
环境修复
吸附
污染物
污染
危险废物
废物管理
化学
环境化学
环境科学
热解
工程类
有机化学
生态学
生物
作者
Jianhua Qu,Jiajia Shi,Yihui Wang,Hua Tong,Yujiao Zhu,Li‐Yan Xu,Yifan Wang,Bo Zhang,Yue Tao,Dai Xiao,Hui Zhang,Ying Zhang
标识
DOI:10.1016/j.jhazmat.2022.128841
摘要
Magnetic biochar (MBC) is extensively applied on contaminants removal from environmental medium for achieving environmental-friendly remediation with reduction of secondary pollution owing to its easy recovery and separation. However, the summary of MBC synthesis methods is still lack of relevant information. Moreover, the adsorption performance for pollutants by MBC is limited, and thus it is imperative to adopt modification techniques to enhance the removal ability of MBC. Unfortunately, there are few reviews to present modification methods of MBC with applications for removing hazardous contaminants. Herein, we critically reviewed (i) MBC synthetic methods with corresponding advantages and limitations; (ii) adsorption mechanisms of MBC for heavy metals and organic pollutants; (iii) various modification methods for MBC such as functional groups grafting, nanoparticles loading and element doping; (iv) applications of modified MBC for hazardous contaminants adsorption with deep insight to relevant removal mechanisms; and (v) key influencing conditions like solution pH, temperature and interfering ions toward contaminants removal. Finally, some constructive suggestions were put forward for the practical applications of MBC in the near future. This review provided a comprehensive understanding of using functionalized MBC as effective adsorbent with low-cost and high-performance characteristics for contaminated environment remediation.
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