摘要
本实验以高岭土(Kaolin)、膨润土(Bentonite)、沸石(Zeolite)作为包裹剂,制备了矿物包裹型纳米零价铁(K-Fe0、B-Fe0、Z-Fe0),用XRD和TEM对样品进行了表征。研究了样品投加量、溶液p H值及初始CHCl3浓度对水中CHCl3去除率的影响,探讨了矿物包裹型纳米零价铁去除水中CHCl3的反应机理。试验结果表明,矿物包裹型纳米零价铁投加量为1.5 g/L,p H值为5,初始CHCl3浓度为10 mg/L时,CHCl3的去除效果较好。K-Fe0、B-Fe0、Z-Fe0对水中三氯甲烷的去除率分别为73.1%、70.9%、74.4%。
The coated nanoscale zero-valent iron particles （K-Fe^0 B-Fe^0 and Z-Fe^0） were synthesized by rheological phase reaction method, using kaolin, bentonite, and zeolite as coating agents. The samples were characterized by means of XRD and TEM. The effect of sample dosage, pH value and initial CHCl concentration on the removal rate of CHCl3and the reaction mechanism of the coated nanoparticles were researched. Results show when the sample dosage was 1.5 g/L, the pH value was 5, and the initial CHCl3 concentration was 10 mg/L, the removal rates of chloroform in water by kaolin-Fe^0, bentonite-Fe^0, and zeolite-Fe^0 were 73.1%, 70.9%, 74.4%, respectively.
出处
《陶瓷学报》
CAS
北大核心
2015年第5期521-525,共5页
Journal of Ceramics
基金
江西省教育厅重点项目(编号:GJJ14634)
景德镇陶瓷学院研究生创新专项资金
关键词
流变相法
矿物
包裹型纳米零价铁
三氯甲烷
去除率
rheological phase reaction method
mineral
coated nanoscale zero-valent iron
chloroform
removal rate
