Enhanced Adsorption of Pb(II) Ions from Aqueous Solution by Persimmon Tannin-activated Carbon Composites

被引：0

作者：

王勇 ^{[1
]}

王富忠 ^{[1
]}

WAN Tao ^{[2
]}

CHENG Shunlin ^{[1
]}

XU Guoqing ^{[1
]}

CAO Rui ^{[1
]}

GAO Ming ^{[1
]}

机构：

[1] School of Materials Science and Engineering, Wuhan University of Technology

[2] Biomedical Material and Engineering Research Center, Wuhan University of Technology

来源：

Journal of Wuhan University of Technology(Materials Science) | 2013年 / 04期

关键词：

adsorption; persimmon tannin; immobilization; lead; powdered activated carbon;

D O I：

暂无

中图分类号：

X703 [废水的处理与利用];

学科分类号：

083002 ;

摘要：

The modification of activated carbon with persimmon tannin and its application for the removal of Pb(II) ions were carried out by batch method. The effects of solution pH, contact time, temperature and initial concentration on the immobilization of persimmon tannin were studied. The experimental results showed that the experimental data of persimmon tannin and Pb(II) fitted better by Langmuir adsorption isotherm model and pseudo-second order model. The adsorption capacities of adsorbents for persimmon tannin and Pb(II) were calculated from the Langmuir isotherm model, and found to be 42.97 and 12.40 mg/g at optimum pH, respectively. It was noted that the adsorbent exhibited the best adsorption property for Pb(II) when 1.0 g activated carbon was modified by 17.32 mg persimmon tannin. The modified activated carbon is more effective than the plain activated carbon, and it is expected to be an economic and effective adsorbent for the disposal of wastewater containing Pb(II) ions.

引用

页码：650 / 657

页数：8

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