Selenium impurity in sodium sulphate decahydrate formed by Eutectic Freeze Crystallization of industrial waste brine

Simple item page
dc.contributor.authorApsey, Grant
dc.contributor.authorLewis, Alison Emslie
dc.date.accessioned2015-06-29T13:16:25Z
dc.date.available2015-06-29T13:16:25Z
dc.date.issued2013
dc.description.abstractEutectic freeze crystallization (EFC) is a novel technique for the recovery of pure salt and pure water from hypersaline waste brines. It is therefore a promising technology for the treatment of industrial waste waters. The impurities caused by crystallizing salt out of multi-component brines by EFC have not yet been investigated, however. To these ends, the selenium impurity found in sodium sulphate, produced from the waste brine of a platinum operation, was investigated. It was believed that the similarity between sulphate and selenate ions allowed isomorphous substitution of selenate ions into the sodium sulphate crystals, which was the likely cause of impurity uptake. It was found that the presence of sodium chloride in the industrial brine promotes the uptake of selenium, while ionic strength of the brine and mass deposition rate of sodium sulphate did not have a significant effect on the selenium uptake. Isomorphous substitution is predicted to be the most significant mechanism by which all impurities will be taken up when applying EFC to other industrial waste brines.en_ZA
dc.identifier.apacitationApsey, G., & Lewis, A. E. (2013). Selenium impurity in sodium sulphate decahydrate formed by Eutectic Freeze Crystallization of industrial waste brine. <i>The Journal of the Southern African Institute of Mining and Metallurgy</i>, http://hdl.handle.net/11427/13170en_ZA
dc.identifier.chicagocitationApsey, Grant, and Alison Emslie Lewis "Selenium impurity in sodium sulphate decahydrate formed by Eutectic Freeze Crystallization of industrial waste brine." <i>The Journal of the Southern African Institute of Mining and Metallurgy</i> (2013) http://hdl.handle.net/11427/13170en_ZA
dc.identifier.citationApsey, G. and Lewis, A.E. (2013). Selenium impurity in sodium sulphate decahydrate formed by Eutectic Freeze Crystallization of industrial waste brine. Journal of the South African Institute of Mining and Metallurgy, Special Edition, 113: 415-421en_ZA
dc.identifier.issn2225-6253en_ZA
dc.identifier.ris TY - Journal Article AU - Apsey, Grant AU - Lewis, Alison Emslie AB - Eutectic freeze crystallization (EFC) is a novel technique for the recovery of pure salt and pure water from hypersaline waste brines. It is therefore a promising technology for the treatment of industrial waste waters. The impurities caused by crystallizing salt out of multi-component brines by EFC have not yet been investigated, however. To these ends, the selenium impurity found in sodium sulphate, produced from the waste brine of a platinum operation, was investigated. It was believed that the similarity between sulphate and selenate ions allowed isomorphous substitution of selenate ions into the sodium sulphate crystals, which was the likely cause of impurity uptake. It was found that the presence of sodium chloride in the industrial brine promotes the uptake of selenium, while ionic strength of the brine and mass deposition rate of sodium sulphate did not have a significant effect on the selenium uptake. Isomorphous substitution is predicted to be the most significant mechanism by which all impurities will be taken up when applying EFC to other industrial waste brines. DA - 2013 DB - OpenUCT DP - University of Cape Town J1 - The Journal of the Southern African Institute of Mining and Metallurgy LK - https://open.uct.ac.za PB - University of Cape Town PY - 2013 SM - 2225-6253 T1 - Selenium impurity in sodium sulphate decahydrate formed by Eutectic Freeze Crystallization of industrial waste brine TI - Selenium impurity in sodium sulphate decahydrate formed by Eutectic Freeze Crystallization of industrial waste brine UR - http://hdl.handle.net/11427/13170 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/13170
dc.identifier.vancouvercitationApsey G, Lewis AE. Selenium impurity in sodium sulphate decahydrate formed by Eutectic Freeze Crystallization of industrial waste brine. The Journal of the Southern African Institute of Mining and Metallurgy. 2013; http://hdl.handle.net/11427/13170.en_ZA
dc.languageengen_ZA
dc.publisherThe Southern African Institute of Mining and Metallurgyen_ZA
dc.publisher.departmentCrystallisation and Precipitation Researchen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.sourceThe Journal of the Southern African Institute of Mining and Metallurgyen_ZA
dc.source.urihttp://www.saimm.co.za/publications/journal-papers
dc.titleSelenium impurity in sodium sulphate decahydrate formed by Eutectic Freeze Crystallization of industrial waste brineen_ZA
dc.typeJournal Articleen_ZA
uct.subject.keywordseutectic freeze crystallizationen_ZA
uct.subject.keywordsimpurity
uct.subject.keywordssalt
uct.subject.keywordsbrine
uct.subject.keywordsisomorphous
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceArticleen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Apsey_Article_2013.pdf
Size:
989.29 KB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.72 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Journal Articles