摘要
分别用十六烷基三甲基溴化铵(CTMAB)和阳离子聚丙烯酰胺(CPAM)改性钠基膨润土,并用CPAM二次改性CTMAB插层膨润土,分析了三种改性后的膨润土的结构并研究了对模拟印染废水的吸附脱色性能。结果表明,经过CPAM二次改性过的CTMAB插层膨润土的层间距d001大于CTMAB改性膨润土、CPAM改性膨润土和钠基膨润土,且二次改性膨润土的脱色效果最佳。用50mg二次改性膨润土处理200mL浓度为30mg/L的活性艳红模拟印染废水时脱色率就可达90%以上,且沉降速度快,表现出良好的吸附、脱色、絮凝沉降的协同效应。
Cationic polyacryamide(CPAM)was used to re-modified CTMAB-bentonite which was the product of Na-bentonite modified with cetyl-trimethylammonium bromide(CTMAB).The study showed that CTMAB-bentonite had larger layer spacing and better capability of decolorization in dyeing wastewater treatment,characterized by distinct synergistic effect of adsorption,flocculation and decolorization.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2006年第3期13-14,25,共3页
Environmental Science & Technology
基金
广东省科技计划项目资助(2002C31622)
关键词
阳离子聚丙烯酰胺
十六烷基三甲基溴化铵
改性膨润土
脱色
cationic polyacryamide(CPAM)
cetyl-trimethylammonium bromide(CTMAB)
organo-bentonite
decolorization
