壳聚糖交联酸改性粉煤灰的制备及对Mn^(2+)的吸附性能研究  

Research on the Preparation of Chitosan Crosslinked Acid Modified Fly Ash and Its Adsorption to Mn^(2+)

作　　者：刘德汞[1] 钟黎[1] 杨自成[1] 缑星[1] 曹书勤[1] 

机构地区：[1]信阳师范学院化学化工学院,河南信阳464000

出　　处：《信阳师范学院学报（自然科学版）》2014年第3期379-382,共4页Journal of Xinyang Normal University(Natural Science Edition)

基　　金：河南省科技攻关项目(112102310579)

摘　　要：以壳聚糖和酸改性粉煤灰为原料,制备壳聚糖交联酸改性粉煤灰吸附剂.利用SEM、XRD、FTIR对其结构进行表征,考察其制备及吸附条件对Mn2+去除率的影响.结果表明:制备时,当壳聚糖与酸改性粉煤灰的质量比为1∶10,交联剂用量为2 mL/g;吸附时,废水pH为9,吸附时间为90 min,吸附剂用量为10 g/L时,Mn2+去除率为98.7%.The chitosan crosslinked acid modified fly ash adsorbent was prepared. Structure of the absorbent was characterized by SEM, XRD and FTIR , and the influence of the preparation and the adsorption conditions on the removal rate of Mn2 ＋ were studied. The results showed that the removal rate was 98.7% when the mass ration of the ehitosan to acid modified fly ash was 1 ： 10, the dosage of erosslinking agent of 2 mL/g, at the pH value of waste water of 9, adsorption time of 90 rain, and the mass of adsorbent of 10g/L.

关 键 词：壳聚糖 酸改性粉煤灰 交联 锰离子 

分 类 号：X703.2[环境科学与工程—环境工程]