应用化学2017，Vol.34Issue(3)：300-307,8.DOI:10.11944/j.issn.1000-0518.2017.03.160406
微波辅助制备螯合纤维及其对汞的吸附性能
Microwave Assisted Preparation of Chelating Fibers for Mercury Adsorption
摘要
Abstract
A chelating fiber which contains large amount of sulfur atoms was prepared through two step reactions by microwave assisted method using polyacrylonitrile fibers (PANF) as the matrix and diethylenetriamine (DETA) and sodium sulphide as functional agents.The influence of pH,the initial concentration of metal ion,adsorption time and temperature were investigated thoroughly.The results show that microwave assisted method exhibits a highly efficient,energy saving,economic and eco-friendly way for the preparation of chelating fibers.The modification processes were performed in nontoxic water environment and the consumed amount of reaction agents were reduced remarkably,along with significantly decreased functionalization time.The pseudo-second-order model and Langmuir isotherm model were found to provide the best fit to the experiment data for the adsorption process of mercury.The obtained chelating fiber shows high affinity towards mercury with the maximum adsorption capacity of 333.1 mg/g at pH =7,in dicating its potential for the removal of mercury from aqueous solution.关键词
微波辅助/聚丙烯腈/螯合纤维/汞/吸附Key words
microwave assisted/polyacrylonitirle fiber/chelating/mercury/adsorption分类
化学化工引用本文复制引用
邓圣,张广山,梁爽,王鹏..微波辅助制备螯合纤维及其对汞的吸附性能[J].应用化学,2017,34(3):300-307,8.基金项目
中国博士后科学基金第九批特别资助项目(2016T90304) （2016T90304）
城市水资源与水环境国家重点实验室(哈尔滨工业大学)自主课题(2015DX03)Supported by National Science Foundation for Post-doctoral Scientists of China (No.2016T90304),State Key Laboratory of Urban Water Resource and Environment(Harbin Institute of Technology) (No.2015DX03) （哈尔滨工业大学）
