Cloud-point extraction of bismuth (III) with nonionic surfactants in aqueous solutions

被引：28

作者：

Didi, Mohamed Amine ^{[1
]}

Sekkal, Amina Rim ^{[1
]}

Villemin, Didier ^{[2
,3
]}

机构：

[1] Tlemcen Univ, Lab Separat & Purificat Technol, Dept Chem, Fac Sci, Tilimsen, Algeria

[2] Univ Caen Basse Normandie, ENSICAEN, CNRS, LCMT,UMR 6507, F-14050 Caen, France

[3] Univ Caen Basse Normandie, CNRS, Ctr Rech, LCMT,UMR 6507, F-14050 Caen, France

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2011年 / 375卷 / 1-3期

关键词：

Cloud point; Bismuth (III); C12E10 non-ionic surfactant; Cl3E10 non-ionic surfactant; Extraction; TRITON X-100; SOLUBILIZATION; LIQUID; SEPARATION; RECOVERY; SOLVENT; COPPER; NICKEL;

D O I：

10.1016/j.colsurfa.2010.11.082

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Two-aqueous phase extraction of bismuth (III) as a solute from its aqueous solutions was investigated using polyethoxylated alcohols (CiEj) as a biodegradable non-ionic surfactant. Cloud points of these surfactants were found to be functions of their concentrations and concentrations of additives. The concentration effect of non-ionic surfactants on the cloud point was determined when the phase diagrams of water-surfactant binary systems (C13E10 and C12E10) were being traced. According to the given surfactant concentration, the extracted solute at pH = 3 arrived at 86% and 45% for C12E10 and C13E10, respectively, in one step. Addition of inorganic salts can either increase or decrease the cloud points. For example, the addition of sodium chloride lowers the cloud points of surfactants. According to the optimal extraction conditions, the extraction mechanism is based on bismuth species - CiEj non-anionic surfactant micelle solvation. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：169 / 177

页数：9

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