C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 31/12 (2006.01) B01J 20/20 (2006.01) C01B 31/08 (2006.01) B01J 20/30 (2006.01)
Patent
CA 2345251
Disclosed are highly activated carbon particles derived from caustic digestion of rice hull ash obtained from thermal pyrolysis of rice hulls having an iodine number of at least 650 to 1000. The activated carbon pores are free of silicate residue from the caustic digestion. Also disclosed are methods of removing the silicate residue from the caustic silicate solution during digestion effective to substantially improve the activation of the carbon particles to commercial grade.
L'invention concerne des particules de carbone fortement activé résultant de la digestion caustique de la cendre de coques de riz obtenue par pyrolyse thermique de coques de riz dont l'indice diode est d'au moins 650 à 1000. Les pores de carbone activé sont débarrassés de résidu de silicate provenant de la digestion caustique. Cette invention concerne également des procédés servant à enlever le résidu de silicate provenant de la solution caustique de silicate pendant la digestion dont l'efficacité permet -'améliorer sensiblement l'activation des particules de carbone à un niveau commercial.
Agritec Inc.
Borden Ladner Gervais Llp
LandOfFree
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