Journal article
Selective removal of arsenic(V) from a molybdate plant liquor by precipitation of magnesium arsenate
Hydrometallurgy, Vol.104(2), pp.290-297
2010
Abstract
Precipitation of Mg-3(AsO4)(2) for the removal of arsenic (As) from a molybdenum oxide processing plant liquor containing 70.9 g/L Mo(VI) and 469 mg/L As(V) was performed. The Stabcal software was used to model the speciation and solubility equilibria, and to identify the pH conditions at which optimum precipitation can be carried out. The optimum pH range for As(V) removal is between pH 7.5 and 10.2. This avoids the need to adjust the liquor pH to affect the precipitation. By adding magnesium chloride or sulphate at a Mg:As molar ratio of at least 2:1, As(V) could be removed to less than 5 mg/L at pH 10.2 resulting in a pure Mo(VI) liquor from which a high purity product of 99.9% MoO3 could be produced by acidification.
Details
- Title
- Selective removal of arsenic(V) from a molybdate plant liquor by precipitation of magnesium arsenate
- Authors/Creators
- Y.Y. Park (Author/Creator)T. Tran (Author/Creator)Y.H. Lee (Author/Creator)Y.I. Nam (Author/Creator)G. Senanayake (Author/Creator)M.J. Kim (Author/Creator)
- Publication Details
- Hydrometallurgy, Vol.104(2), pp.290-297
- Publisher
- Elsevier BV
- Identifiers
- 991005543836307891
- Copyright
- (C) 2010 Elsevier B.V
- Murdoch Affiliation
- School of Chemical and Mathematical Science; Parker Cooperative Research Centre for Integrated Hydrometallurgy Solutions
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.91 Contamination & Phytoremediation
- 3.91.660 Arsenic Biogeochemistry
- Web Of Science research areas
- Metallurgy & Metallurgical Engineering
- ESI research areas
- Materials Science