Remediation of Heavy Metal Contaminated Soil with Ginkgo Biloba Biochar-Based Fertilizer
Ginkgo biloba biochar-based fertilizer prepared with Ginkgo biloba was used for remediation of heavy metal contaminated soil.After 4 d remediation at 30℃by adding 4%ginkgo biloba biochar-based fertilizer,the stabilization efficiencies of Pb,Cd,and Cu can reach 89.5%,97.5%,and 74.9%,respectively.It is shown that the contents of acid extractable Pb,Cd and Cu decrease from 43.81%,60.53%and 65.31%to 12.21%,52.75%and 60.47%respectively;the contents of reducible Pb and Cd decrease from 11.12%and 36.35%to 10.02%and 33.71%respectively;the contents of oxidizable Pb and Cd decrease from 14.36%and 0.76%to 11.61%and 0.74%,respectively,while the content of oxidizable Cu increases from 11.13%to 14.12%;the contents of residual Pb,Cd,and Cu increase from 30.71%,2.36%,and 22.33%to 66.16%,12.80%,and 24.19%,respectively.It is concluded that with strong stability and a good remediation effect at low cost,such ginkgo biloba biochar-based fertilizer shows a good application prospect in remediation of heavy metal contaminated soil.
biocharginkgo bilobabiochar-based fertilizerPbCdCusoil remediationheavy metal pollution
万方数据
维普
