一步合成聚苯胺/Fe_3O_4磁性纳米吸附剂去除Cr(Ⅵ)的应用  

Polyaniline functionalized magnetic nanoparticles(PANI-Fe_3O_4) for the removal of Cr(Ⅵ) from wastewater

作　　者：罗米娜[1] 何雪梅[1] 陈馥[1] 贺杰[1] 卜涛[1] 杨洋[1] LUO Mi-na;HE Xue-mei;CHEN Fu;HE Jie;BU Tao;YANG Yang(College of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学化学化工学院,四川成都610500

出　　处：《应用化工》2018年第9期1846-1849,共4页Applied Chemical Industry

基　　金：国家自然科学基金青年基金(51704250)

摘　　要：采用一步加热法合成聚苯胺/Fe_3O_4磁性纳米颗粒(PANI-Fe_3O_4),处理模拟含Cr(Ⅵ)废水,探讨吸附时间和吸附温度对Cr(Ⅵ)去除效果的影响。结果表明,反应时间90 min达到吸附饱和状态,吸附温度25℃时可达到较好的吸附效果。在常温下,Cr(Ⅵ)最大吸附量可达200. 2 mg/g,符合准二级动力学模型和Langmuir等温吸附模型。Polyaniline/Fe 3O 4 magnetic nanoparticles(PANI-Fe 3O 4)were synthesized by one step heating method to remove Cr(VI)from wastewater.The effects of pH value,adsorbent dispersion,adsorption time and adsorption temperature on the adsorption of Cr(VI)were investigated.The results showed:when the adsorption time was 90 min,the adsorption state reach saturation point,when the adsorption temperature was 25℃,the adsorption effect could be better.The maximum adsorption capacity of Cr(VI)can reach 200.2 mg/g at room temperature.The adsorption of Cr(VI)conforms to the pseudo-second-order model and Langmuir isotherm adsorption model.

关 键 词：聚苯胺/Fe3O4 Cr(Ⅵ) 准二级动力学模型 Langmuir等温吸附模型 

分 类 号：TQ2[化学工程—有机化工] TQ58