Study on the Remediation of Cadmium in Soil with Biochar Supported Vulcanized Nano Zero-valent Iron
As a heavy metal contaminant,Cd is highly toxic and difficult to remove,which poses a great threat to ecological safety and human health.In this paper,BC supported vulcanized nano-zero-valent iron(BC/S-nZVI)was prepared for the remediation of Cd using BC as carrier.During the repair of Cd by BC/S-nZVI,the curing efficiency of Cd extracted by DTPA was 82%,and the fixing efficiency of Cd by TCLP was 63.36%,indicating that BC/S-nZVI has better immobilization potential,which can effectively reduce the availability of Cd in soil,and reduce the dissolution and environmental risks of Cd.