Recovery of phosphate from calcinated bone by dissolution in hydrochloric acid solutions

摘要: Abstract In this study, the optimum conditions of dissolution calcinated bone in HCl solutions with different concentrations are investigated. Recovery phosphate from by hydrochloric acid was investigated a batch reactor, it observed that 32% solution can dissolve effectively. Using Taguchi fractional design method, found process conditions, at which 67.2% P 2 O 5 reached, were as follows: Reaction temperature: 318 K, solid-to-liquid ratio: 1/5 (g ml −1 ), concentrations:32 (% w/v), stirring speed:400 min and reaction time: 60 min.