[1]张 頔.基于聚苯胺的电吸附法处理含铅离子废水的研究[J].常州大学学报(自然科学版),2014,(04):67-71.[doi:10.3969/j.issn.2095-0411.2014.04.014]
　ZHANG Di.Treatment of Wastewater Containing Lead Ions Based on the Electrosorption by Polyaniline[J].Journal of Changzhou University(Natural Science Edition),2014,(04):67-71.[doi:10.3969/j.issn.2095-0411.2014.04.014]
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基于聚苯胺的电吸附法处理含铅离子废水的研究()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
期数:
2014年04期
页码:
67-71
栏目:
环境科学与工程
出版日期:
2014-08-31

文章信息/Info

Title:
Treatment of Wastewater Containing Lead Ions Based on the Electrosorption by Polyaniline
作者:
张 頔
常州工程职业技术学院 化学工程技术系,江苏 常州 213164
Author(s):
ZHANG Di
Department of Chemical Engineering, Changzhou Institute of Engineering Technology,Changzhou 213164,China
关键词:
聚苯胺;  电吸附;  脱附再生;  铅离子
Keywords:
polyaniline;  electrosorption;  desorption regeneration;  lead ions
分类号:
X 522
DOI:
10.3969/j.issn.2095-0411.2014.04.014
文献标志码:
A
摘要:
采用化学氧化聚合法合成聚苯胺(PANI),并对其进行了红外光谱和扫描电镜表征。以PANI为电极材料,通过电吸附技术去除模拟废水中的Pb2+; 同时PANI链上富含的亚氨基还可以与Pb2+发生络合,从而提高了PANI电吸附去除Pb2+的效率。研究了吸附电位、吸附时间、初始浓度等因素对Pb2+去除效果的影响,并且分别从动力学与热力学的角度研究了PANI对Pb2+的电吸附。结果表明,PANI电极对Pb2+的电吸附过程符合Lagergren准一级动力学方程和Freundlich吸附等温式。最后,对吸附了Pb2+的PANI电极的脱附再生进行了研究,经过多次电吸附-脱附循环后,PANI电极对Pb2+的去除率并无明显降低。因此通过电吸附技术,用PANI电极去除实际废水中的Pb2+具有可行性。
Abstract:
Polyaniline(PANI)was synthesized by chemically oxidative polymerization approach, and characterized by FTIR spectra and scanning electron microscopy(SEM). The obtained PANI was used as electrode material for the removal of Pb2+ in simulated wastewater via electrosorption; meanwhile, the imino groups on PANI chains could chelate with Pb2+, which enhanced the removal efficiency of Pb2+. In this work, the effect of adsorption potential, adsorption time and the initial concentration on Pb2+ removal were discussed, and the kinetic and thermodynamic investigation of Pb2+ electrosorption by PANI was also performed. The results indicated that the electrosorption of Pb2+ by the PANI electrode was well described by the Lagergren pseudofirstorder model and the Freundlich isotherm model. Finally, desorption experiments were carried out to investigate the regeneration of the PANI electrode with Pb2+ adsorbed, and the results showed that the decrease in the removal ratio of Pb2+ was not obvious after several electrosorptiondesorption cycles, indicating the possibility of Pb2+ removal from practical wastewater by electrosorption with the proposed PANI electrode.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介:张頔(1969-),男,山东济宁人,实验师,主要从事精细有机合成研究。
更新日期/Last Update: 2014-12-20