Patent ID: 8883104
Filing Date: 2014-11-11
Classification: B01D,Y02C,Y02E,Y10T

Abstract:
1. A method of treating an industrial waste gas, comprising contacting an industrial waste gas comprising carbon dioxide and at least one other component selected from the group consisting of NOx, SOx, mercury, organic, particulate matter, and a combination thereof with an alkali to form a solution wherein the solution comprises sodium carbonate, sodium bicarbonate, or a combination thereof; treating the solution with divalent cations to form a precipitation material comprising metastable carbonate selected from the group consisting of vaterite, aragonite, and a combination thereof and the at least one other component wherein the at least one other component is precipitated, trapped, adsorbed, or a combination thereof; and combining the precipitation material with water to convert the metastable carbonate into stable carbonate.