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Abstract

Systems and processes for producing ammonia products and calcium carbonate products, the latter containing sequestered carbon dioxide, from an effluent derived from one or more organic feedstocks. Solids are removed from an organic feedstock that contains a nitrogen compound to produce an organic liquid effluent that contains ammonium and/or ammonia. Ammonia is stripped and concentrated from the organic liquid effluent to produce a gaseous mixture that contains ammonia and carbon dioxide, and the gaseous mixture is cooled to produce a condensed aqueous ammoniacal nitrogen solution of aqueous ammonia, ammonium bicarbonate, and/or ammonium carbonate. The condensed aqueous ammoniacal nitrogen solution is then contacted with a stabilizing agent to cause a reaction therebetween to produce at least a stabilized ammoniacal nitrogen product and calcium carbonate in which carbon dioxide captured in the ammonium bicarbonate and/or the ammonium carbonate is sequestered.

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First Claim