壳聚糖插层累托石的研制及对Cu^2＋的吸附  

Preparation of Chitosan Intercalation Rectorite and Its Adsorption to Cu^(2+)

作　　者：阿依古丽[1,2] 李世迁[1] 周培疆[1] 张明[1] 丁玲[1] 

机构地区：[1]武汉大学资源与环境科学学院,生物质资源化学与环境生物技术湖北省重点实验室,湖北武汉430079 [2]新疆乌鲁木齐市环境监测中心站,新疆乌鲁木齐830000

出　　处：《环境科学与技术》2011年第3期76-79,101,共5页Environmental Science & Technology

基　　金：国家自然科学基金项目资助(20577036,20777058,20977070);国家高技术研究发展计划(863计划)项目资助(2007AA06Z418)

摘　　要：以钙基累托石原料制备壳聚糖插层累托石复合吸附剂,并通过红外光谱对其结果进行了表征。研究了复合吸附剂对Cu2+的吸附,分别讨论了复合吸附剂的不同配比、搅拌时间、pH值、投加量和温度对吸附效果的影响。结果表明:当壳聚糖/累托石复合吸附剂1:3的配比,pH 6,吸附时间为30 min,投加量为0.75 g/L和温度为30℃时Cu2+的吸附条件下,壳聚糖/累托石复合吸附剂对Cu2+的去除率为99.83%。处理后的水达到了国家一级排放标准。Intercalation rectorite compound adsorption materials was prepared from Ca2＋-rectorite.Its structure was characterized by FTIR.Adsorption behavior of Cu^2＋ by composite adsorbent was investigated.Effects of different mass ratios of compound absorbent and adsorption time,pH of solution,dosage and reaction temperature on the absorbing behaviors towards Cu^2＋ were examined.Results showed that the adsorption rate of compound absorbent towards Cu^2＋ was over 99.83% under the conditions as compound absorbent with mass ratio of chitosan to rectorite of 1：3,pH 6,adsorption time 30 min and adsorbent dosage of 0.75 g/L and 30 ℃.The treated effluent met Grade I of national wastewater discharge standard.

关 键 词：累托石 壳聚糖 复合吸附剂 吸附 CU^2+ 

分 类 号：X703.1[环境科学与工程—环境工程]