C - Chemistry – Metallurgy – 05 – F
Patent
C - Chemistry, Metallurgy
05
F
C05F 1/00 (2006.01) C05B 7/00 (2006.01) C05D 3/02 (2006.01)
Patent
CA 2487802
The invention relates to a process for treating organic material, separating calcium and recovering phosphorus and to utilization of the obtained products and their use as a soil conditioner and a fertilizer as well as for providing carbon dioxide traps in gas cleaning. In the process, organic ingredients are separated from calcium-phosphate-containing ingredients, the calcium-phosphate- containing ingredients are dissolved in an acid-containing solution and/or the calcium is precipitated as a salt corresponding to the acid, and optionally phosphoric acid formed from a phosphate ion is separated. The invention also relates to a calcium-carbonate-containing product and a phosphoric-acid- containing product, which are prepared by the process of the invention.
L'invention concerne un procédé utilisé pour traiter une matière organique, séparer le calcium et extraire le phosphore. L'invention concerne également l'utilisation des produits résultants comme amendements de synthèse et comme fertilisants, ainsi que pour l'obtention de pièges de gaz carbonique pour l'épuration des gaz. Dans ce procédé, les composants organiques sont séparés des composants qui contiennent du calcium et du phosphate, ces derniers composants étant dissous dans une solution à base d'acide, et/ou le calcium est précipité comme un sel correspondant à l'acide, et éventuellement, l'acide phosphorique formé par un ion phosphate est extrait. Par ailleurs, l'invention concerne un produit contenant du calcium et du carbonate et un produit contenant de l'acide phosphorique, tous deux préparés selon le procédé de l'invention.
Freedman Gordon
Preseco Oy
LandOfFree
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