农业环境科学学报2026，Vol.45Issue(8)：1893-1905,13.DOI:10.11654/jaes.2025-0832
铁氧化物强化土壤中有机氯厌氧降解研究进展
Advances in the anaerobic degradation of organochlorine compounds in soil enhanced by iron oxides
摘要
Abstract
Organochlorine compounds exhibit persistence,bioaccumulation and high toxicity.Due to the high electronegativity of chlorine,these compounds are difficult to aerobically degrade under natural conditions.Under anaerobic conditions,however,organochlorine compounds could readily accept electrons and undergo dechlorination,producing lower-chlorinated intermediated products that are more easily mineralized.The redox process of iron in soil plays a key regulatory role in the anaerobic degradation of organochlorine compounds.On the one hand,iron oxides can accelerate the extracellular electron transfer efficiency,thereby enhancing the dechlorination and mineralization capabilities of microorganisms.On the other hand,iron oxides can promote chemical reductive dechlorination through the generation of adsorbed Fe(Ⅱ)via dissimilatory iron reduction,and can also stimulate direct dechlorination by iron-reducing bacteria.Based on the anaerobic degradation pathways of organochlorine compounds in soil,this review summarizes the enhancement mechanism of iron oxides on anaerobic degradation of organochlorines from multiple perspectives,and discusses the current applications of iron oxides in the remediation of organochlorine-contaminated soil.Finally,further research directions are proposed,including:precise elucidation of the extracellular electron transfer pathways enhanced by iron oxides,understanding community response and interaction mechanisms of functional microorganisms,and optimization of materials and system integration for in-situ remediation technology.关键词
铁氧化物/微生物/胞外聚合物/电子传递/还原脱氯Key words
iron oxide/microorganism/extracellular polymeric substance/electron transfer/reductive dechlorination分类
资源环境引用本文复制引用
刘翠英,王志宇,罗小三,宋洋..铁氧化物强化土壤中有机氯厌氧降解研究进展[J].农业环境科学学报,2026,45(8):1893-1905,13.基金项目
江苏省碳达峰碳中和科技创新专项资金项目(BE2022302) Special Funds for Carbon Peak and Carbon Neutral Science and Technology Innovation of Jiangsu Province(BE2022302) （BE2022302）
