[1]吕玉娟,孙宏元,粱爵,等.双硫腙为螯合剂溶剂气浮法去除水中铅研究[J].深圳大学学报理工版,2008,25(3):320-323.
 LU Yu-juan,SUN Hong-yuan,LIANG Jue,et al.Removal of Pb from water by solvent sublation using dithizone[J].Journal of Shenzhen University Science and Engineering,2008,25(3):320-323.
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双硫腙为螯合剂溶剂气浮法去除水中铅研究()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第25卷
期数:
2008年3期
页码:
320-323
栏目:
化学与化工
出版日期:
2008-07-31

文章信息/Info

Title:
Removal of Pb from water by solvent sublation using dithizone
文章编号:
1000-2618(2008)03-0320-04
作者:
吕玉娟孙宏元粱爵刘剑洪
深圳大学化学与化工学院,深圳 518060
Author(s):
LU Yu-juanSUN Hong-yuanLIANG Jueand LIU Jian-hong
College of Chemistry and Chemical Engineering,Shenzhen University,Shenzhen 518060,P.R.China
关键词:
溶剂气浮法双硫腙
Keywords:
solvent sublationplumbumdithizone
分类号:
O 652.6
文献标志码:
A
摘要:
以双硫腙为螯合剂,表面活性剂十六烷基三甲基溴化铵(CTAB)为捕集剂,对Pb离子在水相中形成的Pb-双硫腙-十六烷基三甲基溴化铵体系的溶剂气浮进行研究.结果表明,当表面活性剂与硝酸铅物质的量之比为2∶1时,铅去除率达97.4%;体系去除率在pH值为12.6时最高;有机溶剂的影响不明显;少量的乙醇可提高其去除率和去除速率,但过多会产生抑制作用;适量的NaCl能提高体系去除率,但随着浓度的提高呈现下降趋势;去除速率随气流速率增加而增加,体系去除率随温度升高而递增;反应过程遵从一级动力学,表观活化能为2.08 kJ/mol.
Abstract:
Pb-dithizone complex was removed from an aqueous solution by solvent sublation of Pb-Dithizone-Cetyltrimethyl ammonium bromide (CTAB) (sublate) into isomylol. The effects of many parameters, such as the amount of surfactant, airflow rates, pH, NaCl, ethanol and temperature on the solvent sublation were studied. Experimental results showed that a ratio of surfactant to Pb-dithizone complex (2∶1) was the most effective for the removal, with over 97.4% Pb removed from the aqueous solution in 40 min by solvent sublation, at the value of pH 12.6.The solvent sublation process followed first order kinetics. A characteristic parameter, apparent activation energy of attachment of the sublate to bubbles, was estimated at a value of 2.08 kJ/mol.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2008-03-08
基金项目:深圳大学科研启动基金资助项目(200815)
作者简介:吕玉娟(1971-),女(汉族),湖南省沅江市人,深圳大学副教授、博士.E-mail:yjlv@szu.edu.cn
通讯作者:刘剑洪(1964-),男(汉族),深圳大学教授、博士生导师.E-mail:liujh@szu.edu.cn
更新日期/Last Update: 2008-08-28