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The effect of concentration on the rates of dissolution of gibbsite and boehmite
Author(s) -
Scotford R. F.,
Glastonbury J. R.
Publication year - 1972
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450500613
Subject(s) - gibbsite , boehmite , dissolution , sodium hydroxide , chemistry , hydroxide , inorganic chemistry , caustic (mathematics) , mineralogy , aluminium , kaolinite , organic chemistry , mathematics , mathematical physics
The effect of caustic soda concentration on the rate of dissolution of gibbsite and boehmite was studied. The activity of sodium hydroxide rather than cencentration was found to be the best parameter for kinetically describing the effect of concentration on dissolution rate. For the gibbsite reaction, a first order dependence on sodium hydroxide activity was observed whilst the boehmite dissolution exhibited a dependence on the term (a NaOH . a H2O ) which was first order above 210 g/1 Na 2 O and half order below that concentration.