文献类型：期刊文献

中文题名：膨润土负载壳聚糖季铵盐处理含铬废水

英文题名：Study on Cr(Ⅵ) Waste water Treatment through Bentonite Loading Quaternary Ammonium salt of Chitosan

作者：李小芳[1];冯小强[1];杨声[2]

第一作者：李小芳

机构：[1]天水师范学院化学工程与技术学院;[2]定西师范高等专科学校

第一机构：天水师范学院化学工程与技术学院

年份：2016

卷号：36

期号：2

起止页码：29

中文期刊名：天水师范学院学报

外文期刊名：Journal of Tianshui Normal University

收录：国家哲学社会科学学术期刊数据库

基金：2013年天水师范学院中青年教师资助项目"膨润土负载壳聚糖衍生物处理有机染料废水的研究"(TSA1305)阶段性成果

语种：中文

中文关键词：膨润土;壳聚糖;季铵盐;Cr(VI)

外文关键词：bentonite;chitosan;quaternary ammonium salt;Cr（Ⅵ）

摘要：以膨润土和壳聚糖季铵盐为材料,制备并考察了吸附剂膨润土负载壳聚糖季铵盐(B/HACC)中季铵化取代度、吸附剂添加量、溶液pH值和作用时间对处理含Cr(Ⅵ)废水效果的影响。结果表明:HACC的季铵化取代度与B/HACC对Cr(Ⅵ)去除效果有关。当季铵化取代度为78.5%时,B/HACC对Cr(Ⅵ)的去除效果最好。通过单因素和正交试验筛选,确定最佳实验条件是:B/HACC的添加量为0.5g/L,溶液pH为2.0,吸附平衡30min时,在此条件下B/HACC对Cr(Ⅵ)去除率达96.84%.
The natural polymer flocculation adsorption materials were synthesized making use of quaternary ammoni-um salt of chitosan and bentonite, and the structures of products were characterized by FT-IR.In addition, the ad-sorption of diatomite loading quaternary ammonium salt of chitosan （B/HACC） treating Cr（Ⅵ）, from the aspects of de-gree of substitution, adsorbent dosage, pH and mixing time. The results showed that B/HACC3 have the best decolo-nization effect towards Cr（Ⅵ）, while the substitution degree of quaternary ammonium salt was 78.5%. The removal ratio of Cr（Ⅵ） reached 96.84 %, when amount of adsorption was 0.05g/L, and stirring time was 30 min with solution pH value was 2.0.