期刊论文

Control effects of diatomite supported iron carbonyl on soil cadmium pollution

中文

中国粉体技术

1008-5548

2019

25

6

68-74

10.13732/j.issn.1008-5548.2019.06.012

21707169:国家自然科学基金 2016YFD0800805-4:国家重点研发计划 2017SK2273,2016SK2030:湖南省重点研发计划项目 15K147:湖南省教育厅开放基金

本校为第一机构

以人工模拟的镉污染土壤为研究对象,利用羟基铁对硅藻土实施负载改性;通过进行土壤培养试验,研究铁与土质量比和硅藻土负载羟基铁（Hy Fe-De2）投加量对改良镉污染土壤效果的影响,并使用扫描电镜（SEM）和红外吸收光谱（FTIR）分析改性前、后硅藻土微观形貌与活性基团的变化。结果表明:当铁与土质量比为2∶1时,Hy Fe-De2对土壤镉控制效果最好,土壤可交换态镉含量较对照组减小了27. 2%;随着Hy Fe-De2投加量的增加,土壤可交换态镉含量逐渐减小,土壤p H值逐渐减小,含水率先增大后减小,有机质无明显变化,有效铁和有效锰含量不断提升;当Hy Fe-De2投加量为1. 5%时,Hy Fe-De2对土壤镉的控制效果最好; S...

Using the simulated cadmium-polluted soil as research object,the diatomite was modified by hydroxyl iron.Through soil culture test,the influence of iron and soil mass ratio and diatomite load of hydroxyl iron( Hy Fe-De2) on the effect of improving cadmium contaminated soil were studied,and the changes of micromorphology and active groups of diatomite before and after modification were analyzed by SEM and FTIR. The results show that when the iron and soil mass ratio is 2 ∶ 1,Hy Fe-De2 has the best control effect on soil cadmium,and the content ...