Evaluation of the Effect of Humic Acid Improvement Technology on the Remediation of Lead-Contaminated Soil
To evaluate the effectiveness and mechanism of humic acid salt improvement technology in the remediation of heavy metal contaminated soil,an experiment was conducted on lead-contaminated farmland soil in Shanghai.Humic acid was used as an adsorbent,and 8 experimental groups were designed,including 7 treatment groups and 1 control group,to explore the effects of different treatment concentrations and conditions on lead content and soil properties.The results showed that humic acid amendment had limited effect on soil pH,but had a significant effect on conductivity and lead content.The combination of fly ash(FM)and humic acid(H1 and H2)treatments showed good results in reducing the leaching of lead in lead-contaminated soil.Future studies should further explore the remediation effects of humate on different types and concentrations of heavy metal contaminated soils,as well as its stability and ecological impacts under different environmental conditions.
humic acidheavy metal pollutionsoil remediationlead-contaminatedenvironmental materialssoil pH value
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