Back to results
US 11,560,318 B2Granted
Facile, low-energy routes for the production of hydrated calcium and magnesium salts from alkaline industrial wastes
AssigneeThe Regents of the University of California
InventorsGaurav N. Sant, Laurent G. Pilon, Erika Blanca Callagon La Plante, Bu Wang, Zongsu Wei, Sara Vallejo Castaño
Life of this patent
Estimating the term…
Abstract
Divalent ions are extracted from solids by leaching to form a divalent ion-containing solution. The divalent ion-containing solution is subjected to concentration to form a concentrated divalent ion-containing solution. Precipitation of a divalent ion hydroxide salt is induced from the concentrated divalent ion-containing solution. In other cases, the concentrated divalent ion-containing solution is exposed to carbon dioxide to induce precipitation of a divalent ion carbonate salt.
Claims11
A method comprising:
- extracting divalent ions from solids by leaching to form a divalent ion-containing solution;
- subjecting the divalent ion-containing solution to concentration to form a concentrated divalent ion-containing solution;
- and
- inducing precipitation of a divalent ion hydroxide salt from the concentrated divalent ion-containing solution, wherein subjecting the divalent ion-containing solution to concentration is performed using capacitive concentration.
1 more element
Dependencies are inferred from the claim text.