CTMAB-磁性蛭石对邻苯二酚吸附特性的研究  

Research on the adsorption capability of CTMAB-magnetic vermiculite for catechol

作　　者：陈望香[1] 李强[1] 闫俊杰[1] 朱振华[1] 王兴磊[1] 周晓花[1] Chen Wangxiang;Li Qiang;Yan Junjie;Zhu Zhenhua;Wang Xinglei;Zhou Xiaohua(College of Chemistry and Environmental Science,Yili Normal University,Yining 835000,China)

机构地区：[1]伊犁师范学院化学与环境科学学院,新疆伊宁835000

出　　处：《工业水处理》2019年第4期58-61,共4页Industrial Water Treatment

基　　金：新疆维吾尔自治区自然科学基金青年项目(201442137-28)

摘　　要：以蛭石为原料制备了磁性蛭石复合材料,并用十六烷基三甲基溴化铵(CTMAB)改性,得到CTMAB-磁性蛭石,用XRD、SEM、FTIR、BET对改性前后的蛭石进行表征。结果表明,改性后蛭石吸附剂的比表面积、孔容增大。在25℃、邻苯二酚初始质量浓度为50 mg/L、pH为7条件下,CTMAB-磁性蛭石投加量为0.4 g时,吸附趋于平衡,邻苯二酚最大去除率为95.8%,与蛭石相比,CTMAB-磁性蛭石具有较好的吸附性能。Vermiculite has been used as raw material for the preparation of magnetic vermiculite composite material,which should then be modified with hexadecyl trimethyl ammonium bromide(CTMAB),so as to obtain CTMAB-magnetic vermiculite. The modified vermiculite has been characterized by means of XRD,SEM,FTIR and BET. The results show that the specific surface area and pore volume of the modified vermiculite are increased. Under the following conditions:the dosage of CTMAB-magnetic vermiculite is 0.4 g,adsorption temperature 25 ℃,initial mass concentration of catechol 50 mg/L, and pH=7,the adsorption tends to balance,and the maximum removing rate of catechol is 95.8%. CTMAB-magnetic vermiculite has better adsorption capability,compared with vermiculite.

关 键 词：磁性 蛭石 邻苯二酚 吸附 

分 类 号：X703[环境科学与工程—环境工程] TQ424[化学工程]