WO 2022/036006 A1

Chemical calcium hydroxide manufacturing for cement production using electrochemical separation devices

(22) 11.08.2021

(43) 17.02.2022

(57) An electrochemical method for producing calcium hydroxide includes dissolving a calcium precursor in a first solution in contact with a first electrode to produce Ca2+ ions, transporting the Ca2+ ions across a first membrane from the first solution into a second solution using a first electrochemical potential, producing hydroxide ions at a second electrode, transporting the hydroxide ions across a second membrane into the second solution using a second electrochemical potential, and precipitating calcium hydroxide from the second solution.

(71) The Regents of the University of California, 1111 Franklin Street, 12th Floor, Oakland, California 94607-5200 (US)

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