巯基纤维素对水中Cr(Ⅵ)离子的吸附研究  

Study on Cr(Ⅵ) Adsorption Characteristics from Aqueous Solution by the Sulfhydryl Cellulose

作　　者：易娜[1] 张教强[1] 张莹[1] 季铁正[1] 苏立宏[1] 寇开昌[1] 

机构地区：[1]西北工业大学理学院应用化学系,西安710072

出　　处：《环境保护科学》2011年第4期17-18,61,共3页Environmental Protection Science

摘　　要：制备了巯基纤维素并用其对含Cr(Ⅵ)离子的溶液进行了静态吸附实验。研究了pH值、吸附时间、反应温度、吸附剂用量等因素对吸附性能的影响。结果表明:在pH值为2、Cr(Ⅵ)浓度为50mg/L和吸附剂为0.5g时,常温条件下吸附6h后,Cr(Ⅵ)去除率达到99.2%,吸附反应符合Langmuir和Freundlich等温方程。The sulfhydryl cellulose（SC） was prepared,then it was used to remove Cr（Ⅵ） from aqueous solution.The affecting factors on Cr（Ⅵ） adsorption characteristics from aqueous solution by SC,such as pH value,adsorption time,temperature and SC dose were investigated.The results showed that the removal rate of Cr（Ⅵ） by 0.5 g SC could get up to 99.2 %,when the initial concentration of Cr（Ⅵ） in aqueous solution was 50 mg/L,pH value was 2,adsorption time was 6 h,and at room temperature.The adsorption isotherms could be well fitted in with both Langmuir and Freundlich equation.

关 键 词：巯基纤维素 Cr(Ⅵ)离子 吸附研究 

分 类 号：X703.1[环境科学与工程—环境工程]