Separation and recovery of lead from a low concentration solution of lead(Ⅱ) and zinc(Ⅱ) using the hydrolysis production of poly styrene-co-maleic anhydride

Xing Liang; Yibing Su; Ying YangWenwu Qin

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Separation and recovery of lead from a low concentration solution of lead(Ⅱ) and zinc(Ⅱ) using the hydrolysis production of poly styrene-co-maleic anhydride

机译：Separation and recovery of lead from a low concentration solution of lead(Ⅱ) and zinc(Ⅱ) using the hydrolysis production of poly styrene-co-maleic anhydride

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The Pb-Zn separation/preconcentration technique, based on the complex formation reaction of Pb(Ⅱ) and Zn(Ⅱ), using a copolymer poly(styrene-co-maleic anhydride) (PSMA), without adding any carrier element was developed. The effects of several experimental parameters such as solution pH, temperature and adsorption time were studied. The experimental results show that the PSMA resin-Pb equilibrium was achieved in 2min and the Pb(Ⅱ) loading capacity is up to 641.62 mgg~(-1) in aqueous solution under optimum conditions, which is much higher than the Zn(Ⅱ) loading capacity within 80 min. The adsorption test for Pb(Ⅱ) indicates that PSMA can recover Pb(Ⅱ) from a mixed solution of Pb(Ⅱ), Zn(Ⅱ) and light metals such as Ca(Ⅱ) and Mg(Ⅱ) with higher adsorption rate and larger selective coefficient. A further study indicates that PSMA as chelating resins recovering Pb(Ⅱ) can be regenerated via mineral acid (6 M H_2SO_4). PSMA was synthesized by radical polymerization and tested as an adsorbent for the selective recovery of Pb(Ⅱ). In addition, the formation procedure and structure of Pb-PSMA complex were also studied. Both the PSMA and the Pb-PSMA complex were characterized by means of FTIR spectroscopy, elemental analysis, gel permeation chromatography (GPC) and atomic absorption spectrometry (AAS).

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来源
《Journal of hazardous materials》 |2012年第15期|183-187|共5页
作者
Xing Liang; Yibing Su; Ying YangWenwu Qin;
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作者单位

College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, PR China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类工程基础科学;
关键词
lead; zinc; separation; poly(styrene-co-maleic anhydride); complex;

Separation and recovery of lead from a low concentration solution of lead(Ⅱ) and zinc(Ⅱ) using the hydrolysis production of poly styrene-co-maleic anhydride

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