改性杨絮纤维素对重金属离子的吸附  

Adsorption of heavy metal ions by modified populus cellulose

作　　者：吕爱超 刘彦明[1] 李苗苗[1] 张森[1] 于跃[1] 宫玉梅[1] 

机构地区：[1]大连工业大学纺织与材料工程学院,辽宁大连116034

出　　处：《大连工业大学学报》2017年第2期120-123,共4页Journal of Dalian Polytechnic University

基　　金：中国科学院长春应用化学研究所高分子物理与化学国家重点实验室开放课题(201513)

摘　　要：以两步法非均相反应合成了偕胺肟基杨絮纤维素,并用傅里叶变换红外光谱对其结构进行表征。将合成的纤维素用于吸附废水中的重金属离子,采用重铬酸钾溶液模拟含重金属离子废水,考察了吸附时间、溶液的pH以及重铬酸钾溶液初始质量浓度对改性纤维素吸附效果的影响。结果表明,改性杨絮纤维素在重铬酸钾溶液初始质量浓度为1g/L、pH为2的条件下吸附容量达到70.6 mg/g,对Cr^(6+)的吸附过程符合Langmuir吸附等温式,改性杨絮纤维素对重金属离子的吸附效果良好。Amidoxime populus cellulose （AOPC） was synthesized by two-step method, and FT-IR was used to investigate the structure. AOPC was used to absorb heavy metal ions in potassium dichromate solution water and the effects of absorption capacity for Crs＋ such as adsorption time, pH of the solution and concentration of metal ions were analyzed. The results showed that the adsorption capacity of Cr6＋could reach to 70.6 mg/g when concentration of potassium dichromate solution was 1 g/L, and pH was 2. The adsorption process of Cr6＋ was in accordance with the Langmuir adsorption isotherm, indicating the adsorption effect of heavy metal ions by modified poplar was good.

关 键 词：偕胺肟基杨絮纤维素 重金属离子 吸附 

分 类 号：O647.3[理学—物理化学]