摘要
利用银杏叶制备银杏叶生物炭基肥,在修复时间4 d、银杏叶生物炭基肥添加量4%、反应温度30℃条件下修复重金属污染土壤。结果表明:Pb、Cd、Cu稳定效率分别达到89.5%、97.5%和74.9%;Pb、Cd、Cu弱酸可提取态占比分别由43.81%、60.53%、65.31%降至12.21%、52.75%、60.47%,Pb、Cd可还原态占比分别由11.12%、36.35%降至10.02%、33.71%,Pb、Cd可氧化态占比分别由14.36%、0.76%降至11.61%、0.74%,Cu可氧化态占比由11.13%升至14.12%,Pb、Cd、Cu残渣态占比分别由30.71%、2.36%、22.33%升至66.16%、12.80%、24.19%。银杏叶生物炭基肥稳定性强、修复效果好、成本低,在修复重金属污染土壤方向有较好的应用前景。
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.
作者
王霞霞
刘静霖
Zanariah Jasmani
WANG Xiaxia;LIU Jinglin;Zanariah Jasmani(Lyuliang University,Lyuliang 033000,Shanxi,China;University Teknologi Malaysia,Johor 81300,Skudai,Malaysia)
出处
《矿冶工程》
CAS
北大核心
2024年第6期104-107,共4页
Mining and Metallurgical Engineering
基金
聚合物分子工程国家重点实验室科研项目(K2019-17)
山西省基础研究青年基金(202303021222250)
山西省高等学校科技创新计划项目(2022L571)
山西省高等学校教学改革创新项目(J20221162)
吕梁市科技项目(2022SHFZ38,2020SHFZ51)。
关键词
生物炭
银杏叶
生物炭基肥
PB
Cd
Cu
土壤修复
重金属污染
biochar
ginkgo biloba
biochar-based fertilizer
Pb
Cd
Cu
soil remediation
heavy metal pollution
