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J4  2012, Vol. 46 Issue (11): 2028-2034    DOI: 10.3785/j.issn.1008-973X.2012.11.014
土木工程     
高锰酸钾改性活性炭对水中Sb(Ⅲ)的吸附
王晓卉,俞亭超,李聪,叶苗苗
浙江大学 土木工程学系,浙江 杭州 310058
The adsorption of Sb(Ⅲ) in aqueous by KMnO4-modified
activated carbon
WANG Xiao-hui, YU Ting-chao, LI Cong, YE Miao-miao
Department of Civil Engineering, Zhejiang University, Hangzhou 310058, China
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摘要:

为了提高活性炭对锑的去除效果,以颗粒活性炭为基础,采用不同浓度的高锰酸钾溶液对颗料活性炭进行冷凝回流,并利用扫描电镜(SEM)、激光粒度仪、全自动比表面、孔隙分析仪(BET)和傅里叶红外光谱仪(FTIR)对改性前后的物化性能进行表征.通过对水中Sb(Ⅲ)的静态吸附试验,考察pH值、原溶液中锑的浓度、吸附剂投加量、吸附时间和温度对吸附效果的影响.结果表明,在Sb(Ⅲ)初始质量浓度为1.5 mg/L、吸附剂投加量为1.5 g/L、温度为298 K、pH值为3.00的条件下,用0.01、0.05和0.1 mol/L的高锰酸钾溶液改性的活性炭对锑的去除率分别为87.38%、97.85%和99.04%,吸附过程较好地符合Freundlich吸附等温线.在实验中,pH值对吸附效果的影响较大.

Abstract:

In order to improve the adsorption efficiency, granular activated carbon was modified with different concentration of KMnO4 solution under reflux condensation. The characteristics of the four activated carbons was analyzed by scanning electron microscopy (SEM), laser particle size analyzer and specific surface area tests (BET), surface functional groups are examed by Fourier transform infrared spectrometer (FTIR). The static adsorption study involved effect of pH, adsorbate concentration, adsorbent dosage, contact time and temperature . The results indicate that under the initial Sb(Ⅲ) concentration of 1.5 mg/L, adsorbents dosage of 1.5 g/L, temperature of 298 K, and pH value of 3.00, 0.01 mol/L KMnO4, 0.05 mol/L KMnO4 and the 0.1 mol/L KMnO4, the removal of antimony by activated carbon modified is respectively 87.38%, 97.85% and 99.04%. The experimental data obtained are in good assistantwith the Freundlich adsorption isotherm. In addition, it is found that the pH values have great impacts on the adsorption efficiency.

出版日期: 2012-12-11
:  X 131.2  
基金资助:

国家水体污染控制与治理科技重大专项资助项目(2009ZX07423-004、2008ZX07421-006);中央高校基本科研业务费专项资金资助项目(2012FZA4020).

通讯作者: 俞亭超,男,副教授.     E-mail: yutingchao@zju.edu.cn
作者简介: 王晓卉(1988-),女,硕士生,主要从事水处理研究.E-mail:wangxiaohui.0812@163.com
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引用本文:

王晓卉,俞亭超,李聪,叶苗苗. 高锰酸钾改性活性炭对水中Sb(Ⅲ)的吸附[J]. J4, 2012, 46(11): 2028-2034.

WANG Xiao-hui, YU Ting-chao, LI Cong, YE Miao-miao. The adsorption of Sb(Ⅲ) in aqueous by KMnO4-modified
activated carbon. J4, 2012, 46(11): 2028-2034.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2012.11.014        http://www.zjujournals.com/eng/CN/Y2012/V46/I11/2028

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