Patent ID: 7744761
Filing Date: 2010-06-29
Classification: B01D,C02F,Y02A,Y02W

Abstract:
1. A water-desalination method comprising: contacting a saltwater with an industrial waste gas stream from a power plant under alkaline-earth-metal-ion precipitating conditions to form an alkaline-earth-metal-ion-depleted water and an alkaline earth metal carbonate compound precipitate comprising calcium carbonate that comprises vaterite, aragonite, amorphous calcium carbonate, or any combination thereof, further wherein precipitate formation does not generate carbon dioxide; separating and drying the carbonate compound precipitate comprising calcium carbonate that comprises vaterite, aragonite, amorphous calcium carbonate, or any combination thereof to form a dried carbonate composition; and supplying the alkaline-earth-metal-ion-depleted water to a desalination process.