The kinetics of chlorite dissolution |
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Authors: | Richard T Lowson Paul L Brown Geetha Rajaratnam |
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Institution: | a Institute for Environmental Research, Australian Nuclear Science and Technology Organisation, PMB 1, Menai, NSW 2234, Australia b Rio Tinto Technical Services, 1 Research Avenue, Bundoora, Vic. 3083, Australia |
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Abstract: | A model for the dissolution of chlorite has been developed based on fast ligand assisted proton attack of the alumina tetrahedra within the alumina-silica lattice followed by slower dissolution of the remnant silica lattice. While the rate determining step is within the silica dissolution regime, the rate is a function of the H+ and Al3+ concentrations and the dominant aqueous Al species. Individual rates may be described by a generic rate equation applicable across the spectrum of Al species: |
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