改性膨润土吸附处理含六价铬废水的研究  

Study on adsorption of chromium(Ⅵ) in wastewater by modified bentonite

作　　者：曹春艳[1] 

机构地区：[1]渤海大学化学化工学院,辽宁锦州121000

出　　处：《化学工程师》2008年第10期43-45,共3页Chemical Engineer

摘　　要：用阳离子表面活性剂十六烷基三甲基溴化铵（CTMAB）对钙基膨润土进行活化改性，并用制备的改性膨润土对含Cr（VI）模拟废水进行吸附实验，研究了改性膨润土去除模拟水样中重金属离子CT（VI）的适宜条件。结果表明，用质量分数为5％的CTMAB溶液改性后的膨润土去除Cr（VI）效果较好，当改性膨润土用量为10g·L^-1，搅拌时间30min，pH值为3～5时，有机膨润土对Cr（VI）废水的去除率超过85％。Calci -Bentonite was modified anionic surfactants cetyltrimethylammonium bromide in this paper, and adsorption experiment of Cr（VI） in wastewater were carried out with the modified bentonite obtained. Then the suitable condition of removing heavy metal ions Cr（VI） in a simulated water sample by modified bentonite was studied. The results showed that the bentonite modified by 5% mass concentration CTMAB solution had the best adsorption ability. The removal ratio of Cr（VI） can reach greater than 85% under the following condition： the dosage of modified bentonite was lOg·L^-1, the adsorption time was 30min, the value of pH was 3～5.

关 键 词：改性膨润土 含CR(VI)废水 吸附 

分 类 号：O614.61[理学—无机化学] TD926.5[理学—化学]