Microwave Assisted Preparation of Chelating Fibers for Mercury Adsorption

doi:10.11944/j.issn.1000-0518.2017.03.160406

Chinese Journal of Applied Chemistry ›› 2017, Vol. 34 ›› Issue (3): 300-307.DOI: 10.11944/j.issn.1000-0518.2017.03.160406

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Microwave Assisted Preparation of Chelating Fibers for Mercury Adsorption

DENG Sheng^a,ZHANG Guangshan^b,LIANG Shuang^a,WANG Peng^a^b^*()

^aState Key Laboratory of Urban Water Resource and Environmen,Harbin Institute of Technology,Harbin 150090,China
^bSchool of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China

Received:2016-10-09 Accepted:2016-12-13 Published:2017-02-27 Online:2017-02-27
Contact: WANG Peng
Supported by:
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)

Abstract

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.

Key words: microwave assisted, polyacrylonitirle fiber, chelating, mercury, adsorption

DENG Sheng, ZHANG Guangshan, LIANG Shuang, WANG Peng. Microwave Assisted Preparation of Chelating Fibers for Mercury Adsorption[J]. Chinese Journal of Applied Chemistry, 2017, 34(3): 300-307.

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Microwave Assisted Preparation of Chelating Fibers for Mercury Adsorption

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