Recovery of phosphate from calcinated bone by dissolution in hydrochloric acid solutions
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1999
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Abstract
In this study, the optimum conditions of dissolution of calcinated bone in HCl solutions with different concentrations are investigated. Recovery of phosphate from calcinated bone by dissolution with hydrochloric acid solutions was investigated in a batch reactor, it was observed that a 32% hydrochloric acid solution can dissolve the calcinated bone effectively. Using the Taguchi fractional design method, it was found that the optimum process conditions, at which 67.2% P2O5 dissolution was reached, were as follows: Reaction temperature: 318 K, solid-to-liquid ratio: 1/5 (g ml-1), acid concentrations:32 (% w/v), stirring speed:400 min-1 and reaction time: 60 min. Copyright (C) 1999 Elsevier Science B.V.
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Bone , Calcination , Chemical reactors , Dissolution , Hydrochloric acid , calcium phosphate , calcium phosphate dibasic , hydrochloric acid , phosphate , phosphoric acid , Batch reactors , Taguchi fractional design method , article , bone , chemical analysis , dissolution , kinetics , reactor , rock , temperature , Phosphate fertilizers