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| Preparation of modified biochar and its application in environmental remediation |
| Received:October 29, 2020 |
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| KeyWord:modified biochar;magnetic biochar;preparation;soil remediation;wastewater treatment |
| Author Name | Affiliation | E-mail | | ZHANG Qian-ru | Key Laboratory of Nonpoint Source Pollution Control, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China | | | JI Lin-yu | Key Laboratory of Nonpoint Source Pollution Control, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China | | | GAO Cheng-cheng | Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China | | | Lü Hong-hong | School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China | honghonglyu@hebut.edu.cn | | YONG Sik-Ok | Korea Biochar Research Center Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Korea | |
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| Abstract: |
| With a great specific surface area, high porosity, and strong adsorption capacity, biochar has been widely applied in environmental remediation, soil improvement, and carbon sequestration. The high temperature pyrolysis process can reduce the number of functional groups of biochar and its adsorption capacity for some contaminants. Moreover, the biochar prepared by traditional methods is limited by difficulties with solid-liquid separation. Therefore, efforts have been made to enhance the physicochemical and adsorption properties of biochar through preparing modified biochar, and its application in environmental remediation has received widespread attention in academia and industry. However, there are few reviews on the preparation of modified biochar and its application in soil and water remediation. This review systematically analyses recent literatures on modified biochar, summarizes the methods of biochar modification, and briefly discusses the application of modified biochar in soil and wastewater remediation. The advances of magnetic biochar as an adsorbent and catalyst in wastewater treatment are discussed in detail. Key points and research directions on biochar composites are proposed as a reference for the massive application of biochar in the future. |
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