期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 314, 期 -, 页码 164-171出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2016.04.038
关键词
Ionic liquid; Heavy metal; Heavy metal extraction; Thiosalicylic acid
资金
- FWF Austrian Science Fund [P 24676-N19]
- Austrian Science Fund (FWF) [P 24676] Funding Source: researchfish
This study aims to develop novel ammonium and phosphonium ionic liquids (ILs) with thiosalicylate (TS) derivatives as anions and evaluate their extracting efficiencies towards heavy metals in aqueous solutions. Six ILs were synthesized, characterized, and investigated for their extracting efficacies for cadmium, copper, and zinc. Liquid-liquid extractions of Cu, Zn, or Cd with ILs after 1-24h using model solutions (pH 7; 0.1 M CaCl2) were assessed using flame atomic absorption spectroscopy (F-AAS). Phosphonium-based ILs trihexyltetradecylphosphonium 2-(propylthio)benzoate [P-66614][PTB] and 2-(benzylthio)benzoate [P-66614][BTB] showed best extraction efficiency for copper and cadmium, respectively and zinc was extracted to a high degree by [P-66614][BTB] exclusively. (C) 2016 The Authors. Published by Elsevier B.V.
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