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Removal of iron from cobalt sulfate solutions by ion exchange with Diphonix resin and enhancement of iron elution with titanium(III)
Journal article   Peer reviewed

Removal of iron from cobalt sulfate solutions by ion exchange with Diphonix resin and enhancement of iron elution with titanium(III)

M.S. Lee and M.J. Nicol
Hydrometallurgy, Vol.86(1-2), pp.6-12
04/2007
DOI: https://doi.org/10.1016/j.hydromet.2006.10.002
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Abstract

Diphonix resin was used to remove ferric iron from a cobalt sulfate solution. In the pH range of 0.5 to 2.5, the solution pH greatly affected the loading of cobalt while the loading behaviour of iron was little changed. Lower pH values and higher resin concentrations led to a higher separation factor between iron and cobalt. Iron was not eluted at all at low acid concentrations while 96% of cobalt was eluted with 30 g/L sulfuric acid. Addition of Ti(III) to the sulfuric acid eluant greatly enhanced the elution of iron even at low acid concentrations. Elution of iron with an eluant containing 4 g/L Ti(III) and 300 g/L sulfuric acid led to complete elution of iron at room temperature. It was found that the enhancement of iron elution with Ti(III) is due to the combined effects of reduction of Fe(III) and competitive adsorption of Ti(III) and Ti(IV) ions.

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Source: InCites

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Collaboration types
Domestic collaboration
International collaboration
Citation topics
2 Chemistry
2.209 Spectrometry & Separation
2.209.822 Solvent Extraction
Web Of Science research areas
Metallurgy & Metallurgical Engineering
ESI research areas
Materials Science
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