污泥生物炭对土壤和水体环境中重金属吸附固定的研究进展

Research Progress on Adsorption and Fixation of Heavy Metals by Sludge Biochar in Soil and Water Environment

目前,环境中重金属污染的修复问题备受关注,而逐年增长的城市污泥也造成了巨大的环境压力。污泥生物炭具有较大比表面积和孔隙度,通过改性可克服原始材料吸附能力不足、吸附范围有限等缺陷,在环境污染修复、土壤改良和废水处理等实际应用中具有很大的发展潜力。本文总结了污泥生物炭的制备和改性方法,系统综述了污泥生物炭对土壤和水体中典型重金属的吸附性能和机理,并对其在环境领域的相关研究和发展进行了展望。

At present,the problem of remediation of heavy metal pollution in the environment has attracted much attention,and the annual increase of urban sludge has also caused huge environmental pressure.Sludge biochar has a large specific surface area and porosity,which can overcome the defects of insufficient adsorption capacity and limited adsorption range of original materials through modification,and has great development potential in practical applications such as environmental pollution remediation,soil improvement and wastewater treatment.This paper summarizes the preparation and modification methods of sludge biochar,systematically reviews the adsorption performance and mechanism of sludge biochar on typical heavy metals in soil and water,and prospects its related research and development in the environmental field.