Carbon Engineering Ltd.

Carbon Engineering Ulc

Carbon Engineering Limited Partnership

Procorp Enterprises, LLC

Eric Fessler

Nicholas Vollendorf

Kenton Robert Heidel

David William Keith

Jane Anne Ritchie

Mark Pronley

Techniques for growing crystalline calcium carbonate solids such that the crystalline calcium carbonate solids include a volume of 0.0005 mmto 5 mm, include a slaker to react quicklime (CaO) and a low carbonate content fluid to yield a slurry of primarily slaked lime (Ca(OH)); a fluidized-bed reactive crystallizer that encloses a solid bed mass and includes an input for a slurry of primarily slaked lime, an input for an alkaline solution and carbonate, and an output for crystalline calcium carbonate solids that include particles and an alkaline carbonate solution; a dewatering apparatus that includes an input coupled to the crystallizer and an output to discharge a plurality of separate streams that each include a portion of the crystalline calcium carbonate solids and alkaline carbonate solution; and a seed transfer apparatus to deliver seed material into the crystallizer to maintain a consistent mass of seed material.

Recovering a caustic solution via calcium carbonate crystal aggregates

A method of treating thin stillage from an ethanol production process that includes in a digester, treating thin stillage from the ethanol production process using anaerobic digestion to produce an ammonia-rich liquid product. During anaerobic digestion of the thin stillage, with a solids/liquids separation system of the digester, the ammonia-rich liquid product may be separated from a mixed liquor to produce a permeate. At least a portion of the permeate from the solids/liquids separation system of the digester may be recycled directly to the ethanol production process. A mesophilic anaerobic digester with a thin stillage COD loading rate of about 3 kg/m/d to at least about 7.5 kg/md. An anaerobic biomass prepared by a method that includes subjecting the biomass to at least one stress event.

Anaerobic treatment process for ethanol production

Growing community of inventors

Brookfield, WI, United States of America

Eric Fessler