HEAVY METAL EXTRACTION FROM AQUEOUS SOLUTIONS USING IONIC LIQUIDS IMMOBILIZED IN POLYPROPYLENE AND POLYVINYL ALCOHOL BEADS
- Author(s)
- Marko Klaic, Christof Plessl, Raphlin Mirabeau Leyma, Franz Jirsa
- Abstract
Heavy metal (HM) pollution of surface and ground water bodies is currently considered as one of the world’s most alarming environmental problems. The extraction methods for HM include precipitation, ion-exchange, electrolysis, and adsorption, among others. Each method has its own advantages and disadvantages. In general, these techniques are limited either by selective operation or high operations costs. Ionic liquids (ILs) are a rather novel group of compounds displaying manifold special properties, are considered rather environmental friendly and have been tested for heavy metal extraction quite successfully in the last years (Stojanovic & Keppler, 2012). Amongst others Aliquat 336©-based ILs have shown their potential towards metal extraction in the past (eg Kogelnig et al., 2008). Although most of the ILs are hydrophobic substances, their transition into aqueous solution, the so-called “leaching”, presents a major drawback regarding their environmental friendliness. Therefore their immobilization in proper matrices has the potential to limit the leaching of ILs (Zhang et al., 2011). The aim of this work was to study the extraction potential of Aliquat 336©-based ILs immobilized in polypropylene (PP) and polyvinyl alcohol-alginate (PVA) beads to determine optimal extraction conditions for Hg and Pt with minimized leaching effects.
- Organisation(s)
- Department of Inorganic Chemistry
- External organisation(s)
- University of Johannesburg (UJ)
- Pages
- 559 - 560
- Publication date
- 09-2016
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 104003 Inorganic chemistry, 104023 Environmental chemistry
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/heavy-metal-extraction-from-aqueous-solutions-using-ionic-liquids-immobilized-in-polypropylene-and-polyvinyl-alcohol-beads(4bba2da0-4428-425b-a052-83e1da5bef9c).html