Study on the Influence of Different Passivating Agents on the Remediation of Heavy Metals Contaminated Soil Caused by Lead and Cadmium
In order to explore the remediation strategies of lead-cadmium contaminated soil,this study focused on the effects of different passivation agents on reducing the accumulation of lead and cadmium in contaminated soil,and investigated the regulation effect of passivation agents on soil pH.The passivation agents such as calcium sulfate,phosphate and biochar were used,and the actual collected lead and cadmium contaminated soil were used.The experiment aims to explore the effect of passivator in the actual environment,so as to evaluate its effectiveness in the remediation of heavy metal contaminated soil.The results show that the passivation effect of different passivation agents on lead and cadmium is significantly different,phosphate and biochar are better in reducing the effectiveness of lead and cadmium in soil and reducing the accumulation in plants.The passivation agents can also regulate the soil pH value,which provides a reliable method for the remediation of heavy metal contaminated soil.
different passivatorslead and cadmium heavy metalscontaminated soil
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