Study on the Remediation of Arsenic Contaminated Soil from Different Sources by Using Compound Leaching Agents
Leaching is a highly effective remediation technique for contaminated soil,and there are significant differences in the types of pesticides and arsenic removal rates in soils contaminated with arsenic from different sources.It is necessary to study the remediation effect of single and composite leaching on arsenic contaminated soil,and analyze the influence of arsenic forms on the leaching effect.The results show that the combination of oxalic acid(concentration 0.1 mol/L)and potassium dihydrogen phosphate(concentration 0.1 mol/L)has the best removal effect on arsenic.During soil leaching,the forms of heavy metals,soil particle size,cation exchange capacity,and pH have important effects on the removal rate of arsenic in the soil.Studying the effects of soil characteristics and leaching conditions on arsenic removal in soil can provide theoretical support for remediation of polluted sites and ecological environment risk assessment.
arsenic contaminated soilleachingremediationoxalic acidpotassium dihydrogen phosphatephysical and chemical properties
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