| dc.contributor.author | Van Zyl, P.G. | |
| dc.contributor.author | Breet, E.L.J. | |
| dc.contributor.author | Williams, C.S. | |
| dc.date.accessioned | 2010-05-13T06:06:55Z | |
| dc.date.available | 2010-05-13T06:06:55Z | |
| dc.date.issued | 2008 | |
| dc.identifier.citation | Van Zyl, P.G. et al. 2008. Recover of KAu (CN)2 from granular activated carbon using supercritical CO2. Journal of supercritical fluids, 47(1):31-36. [https://doi.org/10.1016/j.supflu.2008.05.008] | en |
| dc.identifier.issn | 0896-8446 | |
| dc.identifier.uri | http://hdl.handle.net/10394/3004 | |
| dc.identifier.uri | https://doi.org/10.1016/j.supflu.2008.05.008 | |
| dc.identifier.uri | http://www.sciencedirect.com/science/article/pii/S0896844608001861 | |
| dc.description.abstract | The recovery of KAu(CN)2 preloaded onto activated carbon by pure and cosolvent entrained supercritical carbon dioxide (sc-CO2) was investigated using a laboratory-size supercritical extractor. Gold on the carbon surface was monitored by SEM-EDS, while either ICP-MS or AA was employed to detect gold in the corresponding extracts. Recovery was improved by TBP (or TBP-HNO3 adduct) used as a stand-alone extractant or as a cosolvent to sc-CO2, but no more than 10% of the preloaded gold could be extracted, contrary to higher yields of recovery from other types of matrices claimed in the literature. This is ascribed to a surface related limitation in view of observations made on modifying the surface area of the activated carbon | |
| dc.language.iso | en | en |
| dc.publisher | Elsevier | en |
| dc.subject | KAu(CN)2 | |
| dc.subject | Activated carbon | |
| dc.subject | Supercritical carbon dioxide | |
| dc.subject | Tributyl phosphate | |
| dc.title | Recover of KAu (CN)2 from granular activated carbon using supercritical CO2 | en |
| dc.type | Article | en |
| dc.contributor.researchID | 10710361 - Van Zyl, Pieter Gideon | |
| dc.contributor.researchID | 10179402 - Breet, Ernst Lodewyk Johannes | |
