Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 164-171 |
| Number of pages | 8 |
| Journal | Journal of Hazardous Materials |
| Volume | 314 |
| DOIs | |
| Publication status | Published - 15 Aug 2016 |
Austrian Fields of Science 2012
- 104003 Inorganic chemistry
- 104023 Environmental chemistry
Keywords
- Ionic liquid
- Heavy metal
- Heavy metal extraction
- Thiosalicylic acid
- POLYMER SOLAR-CELLS
- WASTE-WATER
- AQUEOUS-SOLUTIONS
- PHOSPHONIUM
- SOLVENTS
- ELECTROLYTES
- REMOVAL
- IMIDAZOLIUM
- SEPARATION
- CADMIUM
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