Abstract: Biochar is aclass of carbon-rich products by the pyrolysis of biomass wastes at oxygen-limited conditions. As a carbon-based material, the functional modification of biochar has been attracting more and more interests in recent years. To enhance the potential of biochar application in carbon sequestration, soil fertility improvement, environmental pollution remediation, modification techniques are used to design specific interface structures and to modify the properties of biochar. Biochar modification involves multiple methods, including physical and chemical modification. The applicability of the modification method depends on its intended use of modified biochar according to its environmental conditions or the types of pollutants (such as inorganic/organic contaminants, hydrophilic/hydrophobic pollutants, molecular/ionic compounds). To better eva-luate the pollution management after the application of modified biochar into soil/water system, this review summarized the quadruple modification method based on porous evolution, group modification, charge coating and magnetization, and concluded the sorption mechanism of environmental pollutants (heavy metals and organics) onto modified biochar. Finally, this review also put forward suggestions for improvement in the functionality, stability and environmental risk of modified biochar, providing a strong technical support for the pollution management strategy.
聂若楠, 王旺民, 曹丽娟, 徐慧敏, 储刚, 秦文秀, 王振, 司友斌. 关于生物炭的四重功能化改性及其吸附环境污染物机制的综述[J]. 材料导报, 2023, 37(22): 22050019-9.
NIE Ruonan, WANG Wangmin, CAO Lijuan, XU Huimin, CHU Gang, QIN Wenxiu, WANG Zhen, SI Youbin. Quadruple Functional Modification of Biochar and Its Sorption Mechanisms of Environmental Contaminants: a Review. Materials Reports, 2023, 37(22): 22050019-9.
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