A process and an apparatus for producing calcium carbonate...

Details A process and an apparatus for producing calcium carbonate... A process and an apparatus for producing calcium carbonate...

C - Chemistry, Metallurgy

12

P

C12P 3/00 (2006.01) C12M 1/40 (2006.01) C12N 9/88 (2006.01) C12P 7/40 (2006.01)

Patent

CA 2493135

The invention relates to a method for improving the production yield of precipitated calcium carbonate (PCC). The improvement resides in the use of an enzymatic bioreactor that supplies HCO3 into the reaction enabling to produce PCC without bubbling gaseous carbon dioxide in the aqueous solution. The present invention has an industrial applicability, namely in the pulp and paper industry.

L'invention concerne un procédé pour améliorer le rendement en carbonate de calcium précipité (PCC). L'amélioration consiste en ce que l'on utilise un bioréacteur enzymatique qui alimente en HCO¿3? la réaction permettant de produire PCC sans barboter le dioxyde de carbone gazeux dans la solution aqueuse. La présente invention a une applicabilité industrielle, notamment dans l'industrie de la pulpe et du papier.

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