A review on the chemical speciation and influencing factors of heavy metals in Municipal Solid Waste landfill humus  

作　　者：Qiongyu Sun Bo Sun Defeng Wang Yuyuan Pu Mingxiu Zhan Xu Xu Jinqing Wang Wentao Jiao 

机构地区：[1]College of Metrology and Measurement Engineering,China Jiliang University,Hangzhou 310018,Zhejiang Province,China [2]Zhongke Hualu Soil Remediation Engineering Co.,Ltd,Dezhou 253011,Shandong Province,China [3]Zhejiang Environmental Protection Group Co.,Ltd,Hangzhou 310020,Zhejiang Province,China [4]Institute for Thermal Power Engineering,Zhejiang University,Hangzhou 310027,Zhejiang Province,China [5]Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Haidian District,18 Shuangqing Road,Beijing 100085,China

出　　处：《Waste Disposal and Sustainable Energy》2024年第2期209-218,共10页废弃物处置与可持续能源（英文）

基　　金：the Zhejiang Provincial Science and Technology Plan Project(No.2022C03082).

摘　　要：Heavy metal pollution in landfill humus can cause serious environmental problems and may endanger soil ecosystems and human health.The biological toxicity of heavy metals is not only related to their total amount but also influenced to a greater extent by the distribution of their chemical speciation.Exploring the different chemical speciation and proportions of heavy metals can provide a more comprehensive and accurate understanding of the pollution characteristics and biological toxic-ity of heavy metals in landfill soil.Based on a review of the relevant literature,this paper systematically summarizes the recent research status of typical heavy metal chemical speciation in landfill humus.This chemical speciation is diverse and complex.For instance,heavy metals in residual states and organically bound states have little impact on organisms,while heavy metals in exchangeable states and Fe-Mn oxide states can easily migrate and transform.The chemical speciation of heavy metals is affected by many factors,among which the soil pH and organic matter content are some of the most important factors.Finally,the existing gaps in the current research on the chemical speciation of heavy metals in landfills are described and future research directions are proposed.This work provides a theoretical reference for researching the restoration of heavy metal-contaminated humus soil and the resource utilization of humus soil.

关 键 词：Landflls Humus soil containing heavy metal-Chemical speciation Distribution characteristics Influencing factors 

分 类 号：X799.3[环境科学与工程—环境工程]