生物炭
环境修复
化学
吸附
环境科学
表面改性
环境化学
废物管理
热解
污染
吸附
有机化学
工程类
生态学
生物
物理化学
作者
Anushka Upamali Rajapaksha,Season S. Chen,Daniel C.W. Tsang,Ming Zhang,Meththika Vithanage,Sanchita Mandal,Bin Gao,Nanthi Bolan,Yong Sik Ok
出处
期刊:Chemosphere
[Elsevier BV]
日期:2016-01-25
卷期号:148: 276-291
被引量:1279
标识
DOI:10.1016/j.chemosphere.2016.01.043
摘要
The use of biochar has been suggested as a means of remediating contaminated soil and water. The practical applications of conventional biochar for contaminant immobilization and removal however need further improvements. Hence, recent attention has focused on modification of biochar with novel structures and surface properties in order to improve its remediation efficacy and environmental benefits. Engineered/designer biochars are commonly used terms to indicate application-oriented, outcome-based biochar modification or synthesis. In recent years, biochar modifications involving various methods such as, acid treatment, base treatment, amination, surfactant modification, impregnation of mineral sorbents, steam activation and magnetic modification have been widely studied. This review summarizes and evaluates biochar modification methods, corresponding mechanisms, and their benefits for contaminant management in soil and water. Applicability and performance of modification methods depend on the type of contaminants (i.e., inorganic/organic, anionic/cationic, hydrophilic/hydrophobic, polar/non-polar), environmental conditions, remediation goals, and land use purpose. In general, modification to produce engineered/designer biochar is likely to enhance the sorption capacity of biochar and its potential applications for environmental remediation.
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