I am going to refine the gypsum with sulfuric acid.
How do you measure the amount of sulfuric acid that enters the plaster during this process? And I want to find the most effective way to extract it.
Dear Colleague,
For specifying of sulfuric acid, in this situation, you have to use nondestructif methods: electroconductivity and resistivity; dielectrical transmissivity. What is plaster size and amount? Is the product continous or discontinous? If this is a waste from fertilizer factory by product, their acit ratio is bigger...If there isn't a problem for destructive analysis, you can try in the pyrolytic conditions like 900-1250 deg.C for a few hours in a furnace. Acids and water can fully removing from plaster. Remained solid is directly anhydrous gypsum.
With My Best Regards,
Dr. Tunçer Mutlu
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