四川环境2024，Vol.43Issue(4)：125-130,6.DOI:10.14034/j.cnki.schj.2024.04.017
磁性纳米膨润土治理镉污染土壤的试验研究
Research on Control of Cadmium-contaminated Soil by Magnetic Nano-bentonite
摘要
Abstract
A pot experiment was conducted to simulate the passivation process of cadmium(Cd)-contaminated soil in mining site.The comparative analysis focused on the passivation and remediation effects of magnetic nano-bentonite and nano-bentonite on soil Cd at different application rates.The results showed that both passivating materials effectively reduced soil Cd bioavailability and inhibited enrichment of Cd in Festuca elata,with reduction effect reduced as the addition increased.In addition,the passivation effect of magnetic nano-bentonite on soil Cd bioavailability was found to be 42.37％higher than that of nano-bentonite.Moreover,under treatments with 0.4％magnetic nano-bentonite and 0.6％nano-bentonite,the enrichment ratio of Cd in Festuca elata exhibited significantly lower,compared with the control group(CK),resulting in reduction ratios of 9.74％and 8.09％,respectively.Therefore,these findings highlighted the remarkable efficacy of magnetic nano-bentonite for restoring Cd-contaminated soils in mining site,showcasing its extensive potential of treating contaminated soil.关键词
镉/土壤/磁性纳米膨润土/钝化修复Key words
Bentonite/soil/magnetic nano-bentonite/passivating restoration分类
资源环境引用本文复制引用
宋媛媛,杨庆,孙海龙..磁性纳米膨润土治理镉污染土壤的试验研究[J].四川环境,2024,43(4):125-130,6.基金项目
四川省重点研发计划项目(2022YFG0310、2023YFS0391). （2022YFG0310、2023YFS0391）
