Computer Science
Scientific paper
Mar 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007gecoa..71.1431l&link_type=abstract
Geochimica et Cosmochimica Acta, Volume 71, Issue 6, p. 1431-1447.
Computer Science
3
Scientific paper
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: rn=kn3paAlp1+KnβLq(3p-zq)aH3paAlpτn, where rn is the rate subscripted for the nth Al species, k is the rate constant of the rate controlling step, K is the surface exchange constant, β is the solution stability constant subscripted for the Al species, a is the species activity subscripted for species and raised to the power of the stoichiometry, p and q are stoichiometric coefficients, z is the ligand charge and τ is the fractional coefficient for the precursor of the rate defining step. The observed rate is the sum of the individual rates. When the observed rate is in a domain of dominance for a single aluminium species and in the absence of strong complexing agents such as oxalate, the observed rate is proportional to a3/aτn. The model is supported by experimental data for the dissolution of chlorite over a pH range of 3 10 and temperature range 25 95 °C. The results have hydrometallurgical application.
Brown Lancaster P.
Comarmond Josick M.-C.
Lowson Richard T.
Rajaratnam Geetha
No associations
LandOfFree
The kinetics of chlorite dissolution does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The kinetics of chlorite dissolution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The kinetics of chlorite dissolution will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-860966