Removing Contaminants from non-ideal Hydrometallurgical Solutions: Assessment of Cd(II) Liquid-liquid Extraction with Aliquat 336 in Toluene
Appears in the following Collection
- Kjemisk institutt 
AbstractThis dissertation aims to study methods of speciation and extraction of metals in industrial solutions. the metals studied has low concentration relative to the main product in the industrial solution. The result is species that are hard to detect and that are in uncommon thermodynamic conditions. The thesis have used a combination of NMR and Raman spectroscopy together with traditional radiotracer methods to determine the extraction and speciation of the different metals. The main focus has been on cadmium, as this is a toxic metal present in several raw ores. The reason for the goal is the decreasing ore quality which increases the variation of the composition of the industrial solutions.
List of papers
|Article I: Methodology for Studying Cadmium Extraction from Highly Saline Solutions. Hans Vigeland Lerum, Niels Højmark Andersen, Dag Øistein Eriksen, Eddy Walther Hansen, Dirk Pettersen, Grethe Wibetoe, Jon Petter Omtvedt. Published: Journal of Solution Chemistry 47, 1395-1417 (2018). doi: 10.1007/s10953-018-0795-z. The article is included in the thesis. Also available at: https://doi.org/10.1007/s10953-018-0795-z|
|Article II: Comparison of distribution ratios using single-phase and two-phase measurements. Extraction of Cd, Zn and Co with Aliquat 336 from a multi-element chloride matrix Hans Vigeland Lerum, Svetlana Sand, Dag Øistein Eriksen, Grethe Wibetoe, Jon Petter Omtvedt. Accepted: Journal of Radioanalytical and Nuclear Chemistry. Published with title: Comparison of single-phase and two-phase measurements in extraction, separation and back-extraction of Cd, Zn and Co from a multi-element matrix using Aliquat 336. J Radioanal Nucl Chem 324, 1203–1214 (2020). doi: 10.1007/s10967-020-07168-8. The article is included in the thesis. Also available at: https://doi.org/10.1007/s10967-020-07168-8|
|Article III: NMR study of influence and interplay of water, HCl and LiCl with the extraction agent Aliquat 336 dissolved in toluene. Hans Vigeland Lerum, Niels Højmark Andersen, Dag Øistein Eriksen, Eddy Walther Hansen, Jon Petter Omtvedt. Under revision: Journal of Molecular Liquids. To be published. The paper is not available in DUO awaiting publishing.|