Process for producing a calcium phosphate reactant, reactant obtained and use thereof in the purification of liquid effluents

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United States of America Patent

PATENT NO 11498049
APP PUB NO 20200330955A1
SERIAL NO

16920796

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Abstract

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A process for producing a calcium phosphate reactant, according to which: in a first step, use is made of a source of calcium and a source of phosphate ions in water, in a molar ratio that is adjusted so as to obtain a Ca/P molar ratio of between 0.5 and 1.6, and the source of calcium is reacted with the phosphate ions at a pH of between 2 and 8, in order to obtain a suspension (A) of calcium phosphate, and in a second step, added to the suspension (A) are an alkaline compound comprising hydroxide ions in order to set a pH of more than 8 and an additional source of calcium in order to obtain a suspension (B) of calcium phosphate reactant having a Ca/P molar ratio of more than 1.6. A calcium phosphate reactant obtainable by such a process.

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Patent Owner(s)

Patent OwnerAddress
SOLVAY SA1120 BRUXELLES

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bodson, Olivier Jacques F J G Duisburg, BE 4 1
Breugelmans, Dirk Vilvoorde, BE 4 2
Delplanche, Thierry Mont-St-Guibert, BE 13 22
Perrin, Patrick Barreda Torrelavega, ES 15 105

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