矿产保护与利用Issue(2)：111-117,7.DOI:10.13779/j.cnki.issn1001-0076.2018.02.021
重金属离子在改性蛭石表面的竞争吸附及其动力学研究
Study on Competitive Adsorption and Kinetics of Heavy Metal Ions on Modified Vermiculite
摘要
Abstract
By vermiculite ore and modified vermiculite as adsorbent,separately,isothermal adsorp-tion experiment on ions,such as Cu2+,Cd2+,Zn2+was studied. Various factors,affecting the ver-miculite surface adsorption performance of single ion,was studied,including adsorbent dosage,solu-tion pH value,the concentration of heavy metal ions,adsorption time and temperature. And then the adsorption kinetics mechanism of three kinds of metal ions on vermiculite was also studied. The ex-perimental results show that the vermiculite ore expanded in the high temperature of 900 ℃ and modified by 2% CTMAB,the adsorption capacity increased obviously. When the adsorbent dosage is 0.3 g,pH value 5-6,initial metal ion concentration is 150 mg/L,and adsorption time 60 min, the maximum adsorption rate of three kinds of metal ion can up to 90% at room temperature.关键词
蛭石/重金属离子/竞争吸附/吸附动力学Key words
vermiculite/heavy metal ions/competitive adsorption/adsorption kinetics分类
矿业与冶金引用本文复制引用
朱小燕,姜丽娜,尚建疆,刘祥..重金属离子在改性蛭石表面的竞争吸附及其动力学研究[J].矿产保护与利用,2018,(2):111-117,7.基金项目
新疆维吾尔自治区高校青年教师科研培育基金(自然科学类)(XJEDU2016S091) （自然科学类）
