生物炭是生物质在缺氧条件下热解产生的一种富含碳固体物质,特点为疏松多孔、比表面积大且表面富含酚羟基、羧基和氨基等多种官能团。同时,生物炭是一种廉价易得、性能优良的吸附材料,因其环境友好、来源广泛,在污水处理领域具有广泛应用。分析了生物炭对水中污染物的吸附机理,重点阐述了TiO2、磁性氧化铁、MnO2以及其他氧化物等金属氧化物基生物炭复合材料在污水处理领域中的应用现状、循环利用以及再生性能,最后展望了金属氧化物基生物炭复合材料的发展前景。
Biochar is a kind of carbon-rich solid material produced by pyrolysis of biomass under anoxic conditions.It is characterized by loose porous porosity,large specific surface area and rich in various functional groups such as phenolic hydroxyl,carboxyl and amino groups on the surface.Moreover,biochar is a cost-effective and easy-to-obtain adsorption materials with excellent performance,and has been widely used in the field of wastewater treatment because of its environmental friendliness and wide sources.The adsorption mechanism of biochar for pollutants in water was introduced,and the application status,recycling and regeneration performance of metal oxide-based biochar composites such as TiO2,magnetic iron oxide,MnO2 and other oxides in the field of wastewater treatment were emphatically described.Finally,the development prospects of metal oxide-based biochar composites were outlooked.
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基金资助
国家自然科学基金(22266025);内蒙古自然科学联合基金项目(2022LHMS02001);内蒙古自治区水环境安全协同创新中心项目(XTCX003);内蒙古师范大学引进高层次人才科研启动经费项目(2020YJRC018);内蒙古师范大学基本科研业务费专项(2022JBTD009)
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