Separation and removal of metal ions from dilute solutions using micellar-enhanced ultrafiltration

Ruey Shin Juang*, Yong Yan Xu, Ching Liang Chen

*此作品的通信作者

研究成果: 期刊稿件文章同行評審

171 引文 斯高帕斯(Scopus)

摘要

The removal of single metal ions including Cs+, Sr2+, Mn2+, Co2+, Cu2+, Zn2+, and Cr3+ from aqueous solutions (up to 200mg/l) by ultrafiltration (UF) with the help of an anionic surfactant sodium dodecyl sulfate (SDS) was investigated. Experiments were performed as a function of the membrane MWCO (1000-8000) and material (polyamide, polyethersulfone), solution pH (2-12), and molar concentration ratio of the surfactant to metals (the S/M ratio, 0.5-27). It was shown that complete removal of metal ions, except for monovalent Cs+, could be achieved as long as the SDS micelles were formed. The effects of added electrolyte NaCl and the transmembrane pressure (TMP) on metal rejection were also examined. The potential of this UF process for the separation of binary metals involving Sr2+ or Cr3+ was particularly demonstrated using a low-MWCO membrane (1000) and at a relatively low S/M ratio (<5-10). The recovery and reuse of surfactant from the retentate was finally studied.

原文英語
頁(從 - 到)257-267
頁數11
期刊Journal of Membrane Science
218
發行號1-2
DOIs
出版狀態已出版 - 01 07 2003
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