摘要
介绍了含铁材料修复砷污染土壤的研究进展,对土壤中砷的不同形态以及含铁材料固砷的效果、机理及其影响因素进行了分析。分析表明,含铁材料治理砷污染土壤具有较好的效果,且含铁材料固化砷的效果顺序大致为三价铁>二价铁>铁的氢氧化物、铁的氧化物、聚合硫酸铁;固砷的机理主要是铁砷沉淀、离子交换和吸附等作用;影响含铁材料固砷效果的因素主要有含铁材料的种类及添加量、土壤pH和氧化还原电位以及离子竞争等作用。
Advances of curing arsenic-contaminated soil with iron-containing material are introduced, and different fractions of arsenic in the soil, the effect of iron-containing materials on curing arsenic, mechanisms and influencing factors are analyzed. Analysis showed iron-contai- ning material solidify arsenic in soil with good results, and the effect of curing order generally is ferric 〉 ferrous 〉 iron hydroxide, iron oxide, polymeric ferric sulfate. The main curing mechanism of iron-arsenic is precipitation of iron-arsenic, ion exchange and adsorption, etc. The main factors influencing of iron-containing material curing arsenic are mainly types and dosage of iron-containing material, soil pH and redox potential and ion competition, etc.
出处
《安徽农业科学》
CAS
2014年第12期3692-3695,3729,共5页
Journal of Anhui Agricultural Sciences
关键词
含铁材料
土壤
砷污染
修复
研究进展
Iron-containing material
Soil
Arsenic contamination
Remediation
Research advances
