农业环境科学学报2016，Vol.35Issue(11)：2101-2106,6.DOI:10.11654/jaes.2016-0760
沸石-鸟粪石复合材料对土壤中铅的稳定化作用
Stabilization of Pb in contaminated soil using zeolite-struvite composites
摘要
Abstract
Azeolite-struvite composites(Zeo-str material)was recovered in simulated wastewater and applied to stabilize Pb in soil. The sta-bilization effect of it was explored by SEM/EDS and XRD characterization, extraction of the available heavy metal, modified BCR sequential extraction procedures, enzymatic activity analysis, etc. The results showed that Zeo-str material mostly was the struvite loaded ammonium saturated zeolite and it performed better ability of stabilizing Pb than zeolite. After applying Zeo-str material into Pb contaminated soil at the dosage of 10%in 28 days, the fraction of exchangeable Pb decreased 83%while reducible Pb and residual Pb fractions increased 8.7 and 2.5 times respectively, and sucrose enzyme activity increased while catalase activity decreased due to the stabilization of Pb in soil. In con-clusion,Pb in soil can be stabilized by Zeo-str material, thus achieving resource utilization of waste.关键词
鸟粪石/人造沸石/重金属/土壤/稳定Key words
struvite/artificial zeolite/heavy metal/soil/stabilization分类
资源环境引用本文复制引用
张志昊,陈杰,夏鹏,王浩,王学江,赵建夫..沸石-鸟粪石复合材料对土壤中铅的稳定化作用[J].农业环境科学学报,2016,35(11):2101-2106,6.基金项目
国家自然科学基金项目（41571301）；国家自然科学基金项目（51678421）；国家国际合作专项项目 （）
