期刊论文

Improvement of Cd-contaminated soil by Fe-Al modified diatomite combined with CaO

Zhu, J.

中文

中国环境科学

1000-6923

2019

39

9

3905-3913

10.19674/j.cnki.issn1000-6923.2019.0458

国家自然科学基金资助项目（21707169）； 国家重点研发计划资助项目（2016YFD0800805-4）； 湖南省重点研发计划资助项目（2017SK2273,2016SK2030）； 湖南省教育厅开放基金项目（15K147）； 湖南省研究生科研创新基金资助项目（CX20190619）； 中南林业科技大学校级研究生科技创新基金资助项目（CX20192009）；

本校为第一且通讯机构

以人工模拟Cd污染土壤为研究对象,以Fe-Al改性硅藻土和CaO为原料制备组配改良剂,通过土壤培养试验研究了Fe-Al改性硅藻土与CaO不同配比对组配改良剂改良Cd污染土壤效果的影响.结果表明,向Cd污染土壤施加Fe-Al改性硅藻土与CaO以不同配比所制得组配改良剂对土壤Cd形态、pH值、CEC值、OM值、含水率、有效氮、速效磷、有效钾均产生了积极的影响.当Fe-Al改性硅藻土与CaO的配比为1:6时,土壤可交换态 Cd含量较空白对照降低了74.67%,较单一施加Fe-Al改性硅藻土和CaO分别降低了64.63%和7.87%,与对照相比,土壤pH值提升了0.45,土壤CEC提升了69.78%,土壤有效氮、速效磷分别提升了28.57%、70.85%.Fe-Al改性硅...

The artificially simulated Cd contaminated soil was used as the research object. The Fe-Al modified diatomite and CaO were used as raw materials to prepare the modifier. The soil-culture experiment was used to study the effect of Cd-contaminated soil was improved by adding the different ratios of Fe-Al modified diatomite and CaO. The results showed that by applying Fe-Al modified diatomite and CaO to Cd contaminated soil with different ratios, the Cd forms, pH value, CEC value, OM value, water content, available nitrogen, available phosphorus a...