摘要
从水环境中分离普通的生物质炭很困难,而且可能会导致二次污染,这就阻碍普通生物质炭作为吸附剂的大规模应用,解决这一问题的一个有效策略是将过渡金属及其氧化物引入生物质炭基质中,产生易于分离的磁性生物质炭。磁性生物炭不仅能有效去除水溶液中的重金属污染物,而且还可以通过施加外部磁场,实现磁性吸附剂的分离,进而回收——再生——再利用,提高其修复性能。由于其在重金属吸附方面的优越性,在重金属污染水处理领域引起了广泛的关注和研究。综述简要总结了磁性生物炭的不同制备方法,整理磁性生物质炭吸附重金属的机制,分析影响磁性生物质炭与重金属相互作用的因素。最后,指出了磁性生物质炭在重金属污染水体水处理中进一步的研究需求和未来的研究方向,并展望了未来的发展前景和潜力。
It is difficult to separate ordinary biochar from water environment,and it may cause secondary pollution,which hinders the large-scale application of ordinary biomass charcoal as adsorbent.An effective strategy to address this problem is to introduce transition metals and their oxides into the biochar matrix,resulting in easily separated magnetic biochars.Magnetic biochar can not only effectively remove heavy metal pollutants in aqueous solution,but also realize the separation of magnetic adsorbents by applying an external magnetic field,and then recover-regenerate-reuse to improve its repair performance.Due to its superiority in heavy metal adsorption,it has attracted extensive attention and research in the field of heavy metal-contaminated water treatment.The review briefly summarizes the different preparation methods of magnetic biochar,sorts out the mechanism of magnetic biochar adsorption of heavy metals,and analyzes the factors affecting the interaction between magnetic biochar and heavy metals.Finally,the further research needs and future research directions of magnetic biomass char in the treatment of heavy metal polluted water are pointed out,and the future development prospects and potentials are prospected.
作者
宋少花
徐金兰
宋晓乔
于媛
SONG shaohua;XU jinlan;SONG xiaoqiao;YU yuan(Huaqing College,Xi'an University of Architecture and Technology,Xi'an 710043,China;School of Environmental and Municipal Engineering Xi'an University of Architecture&Technology,Xi'an,710055,China)
出处
《功能材料》
CAS
CSCD
北大核心
2023年第1期1058-1069,共12页
Journal of Functional Materials
基金
国家自然科学基金项目(51778524)
陕西省教育厅专项科研计划项目(21JK0738)
2021年西安建筑科技大学华清学院大学生创新训练项目(S202113679014)。
关键词
重金属
磁性生物炭
水处理
吸附作用
heavy metal
magnetic biochar
water treatment
adsorption
作者简介
宋少花(1988-),女,讲师,硕士,从事石油污染土壤修复技术及水污染控制研究;通讯作者:徐金兰,E-mail:xujinlan@xauat.edu.cn。
