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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 17    No. 5    October 2007

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Adsorption characteristics of zinc ions on sodium dodecyl sulfate in process of micellar-enhanced ultrafiltration
HUANG Jin-hui(黄瑾辉), ZENG Guang-ming(曾光明), QU Yun-huan(曲云欢), ZHANG Zhen(张 振)

College of Environmental Science and Engineering, Hunan University, Changsha 410082, China

Abstract:To separate zinc ions from aqueous solution efficiently, micellar-enhanced ultrafiltration(MEUF) of hollow ultrafiltration membrane was used with sodium dodecyl sulfate(SDS) as surfactant.The formation of micellar and the adsorption mechanism were investigated, including the influence of the ratio of SDS to zinc ions on the micelle quantity, the micelle ratio, the gross adsorptive capacity, the rejection of zinc ions and the adsorption isotherm law. The results show that the rejection rate of zinc ions reaches 97% and the adsorption of zinc ions on SDS conforms to the Langmuir adsorption isotherm and the adsorption is a chemical adsorption process.

 

Key words: micellar-enhanced ultrafiltration; zinc ion; surfactant; micelles

ISSN 1672-7029
CN 43-1423/U

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