ELECTROCHEMICAL Ca(OH)2 AND/OR Mg(OH)2 PRODUCTION FROM INDUSTRIAL WASTES AND Ca/Mg-CONTAINING ROCKS
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United States of America Patent
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Issued Date -
Apr 27, 2023
app pub date -
Oct 24, 2022
filing date -
Oct 22, 2021
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Abstract
A method of preparing metal hydroxides from industrial wastes or alkaline rocks is provided. The method comprise subjecting a mixture comprising a solvent and a solid substrate to a stimulus in order to leach a metal cation from the solid substrate into the solvent, thereby forming a solution comprising the metal cation in the solvent; and contacting the solution of comprising the metal cation with a cathode, thereby electrolytically precipitating the metal hydroxide from the solution. The stimulus may be chemical, mechanical, or both.
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