Patent ID: 9126146
Filing Date: 2015-09-08
Classification: B01D,B01J,C01B

Abstract:
1. Date pit-derived activated carbon made from a method comprising: contacting date pits with a phosphoric acid aqueous solution having a phosphoric acid concentration of from about 5% by weight to about 20% by weight, to form treated date pits; drying the treated date pits at a temperature of from about 80° C. to about 150° C. for a period of from about 1 hour to about 12 hours, to form treated, dried date pits; calcining the treated, dried date pits at a temperature of 850° C. under a nitrogen blanket to cause the treated, dried date pits to thermally decompose and form a calcined product; treating the calcined product with carbon dioxide gas; and pulverizing and screening the carbon dioxide gas-treated calcined product to form uniformly sized date pit-derived activated carbon particles, the date pit-derived activated carbon particles having a surface area of 665 m