C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 31/12 (2006.01) B01D 15/00 (2006.01) B01J 20/20 (2006.01) B01J 20/22 (2006.01) C02F 1/28 (2006.01) B01J 20/32 (2006.01)
Patent
CA 2430622
An activated carbon composition is disclosed, which includes an activated carbon and a carboxylic acid containing compound. The activated carbon composition is prepared by immersing an activated carbon in an aqueous solution of a carboxylic acid containing compound. The activated carbon composition is used for purifying aqueous solutions by providing a bed of the activated carbon composition and passing the aqueous solution through the bed of the activated carbon composition. The aqueous solution is passed through the bed such that the flow of the aqueous solution to be purified into the bed and the flow of purified aqueous solution from the bed has a pH differential less than .plusmn. 1 pH.
L'invention concerne une composition de carbone activé, constituée d'un composé comportant un carbone activé et un acide carboxylique. Cette composition de carbone activé est préparée par immersion d'un carbone activé dans une solution aqueuse d'un composé contenant un acide carboxylique. Elle est utilisée pour purifier des solutions aqueuses, qui traversent alors un lit constitué avec cette composition de carbone activé. Selon l'invention, une solution aqueuse passe à travers le lit de telle sorte que le flux de solution aqueuse à purifier et le flux de solution aqueuse purifié ont une différence de pH inférieure à .plusmn. 1 pH.
Havelka J. Michael
Roodman Robert G.
Scherrer Robert
Smiley Jack
Envirotrol Inc.
Piasetzki Nenniger Kvas Llp
Siemens Industry Inc.
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