Removal of fluoride from water by modified polypyrrole

被引：0
|
作者：
Feng J. [1 ]
Wang X. [1 ]
Zhao X. [1 ]
Gong X. [2 ]
Yan W. [1 ]
机构：
[1] Department of Environmental Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an
[2] Yiwu Water Treatment Co., Ltd., Yiwu
来源：
Yan, Wei (yanwei@xjtu.edu.cn) | 1600年 / Materials China卷 / 40期
关键词：
Adsorption; Fluorine ion; Mechanism; Polypyrrole (PPy); Special morphology;
D O I：
10.16085/j.issn.1000-6613.2020-1551
中图分类号：
学科分类号：
摘要：
Modified polypyrrole (PPy) nanofibers with different diameters were synthesized by controlling the synthesis conditions and adding ARG, MO and α-CD+MO in the polymerization process, respectively. The physicochemical properties of the as-prepared PPy were characterized by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy(FTIR), nitrogen adsorption desorption analysis (BET) and zeta potential analysis. The results showed that the specific surface area of PPy with special morphology was 7-10 times higher than that of traditional granular PPy. Compared with traditional granular PPy, the modified PPy with special morphology can reach the adsorption equilibrium within 10 min at room temperature and pH=5 when the initial concentration of F- was 3-5mg/L and the dosage was 2g/L. The concentration of F- can be reduced to less than 1mg/L in the Integrated Wastewater Discharge Standard (GB 5749-2006). The results indicated that the control of special morphology had a great influence on the adsorption of F- by PPy. In addition, the adsorption behavior was a spontaneous exothermic process, which can be well fitted by Langmuir model. The removal of F- by PPy was mainly the result of ion exchange. © 2021, Chemical Industry Press Co., Ltd. All right reserved.
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页码：4036 / 4046
页数：10
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