Solvay Sa

Patrick Perrin

Thierry Delplanche

Olivier Jacques F J G Bodson

Dirk Breugelmans

Jorge Alejandro Kabbabe Malave

Marc Thijssen

Olivier Jacques FJG Bodson

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.

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

A reactive composition comprising between 60% and 98% by weight of sodium bicarbonate, between 1% and 40% by weight of sodium carbonate and between 0.02% and 2.0% by weight of ammonia, expressed in the form of ammonium ions NH, and comprising from 0.01 to 5% by weight of a compound selected from the group consisting of hydrocarbons, fatty alcohols, fatty acids, and fatty acid salts.

Reactive composition based on sodium bicarbonate and process for its production

Growing community of inventors

Barreda Torrelavega, Spain

Patrick Perrin