PRIMERA-PEDROZO, Oliva; COLPAS-CASTILLO, Fredy; MEZA-FUENTES, Edgardo    FERNANDEZ-MAESTRE, Roberto. CARBONES ACTIVADOS A PARTIR DE BAGAZO DE CAÑA DE AZÚCAR Y ZURO DE MAÍZ PARA LA ADSORCIÓN DE CADMIO Y PLOMO. []. , 35, 136, pp.387-396. ISSN 0370-3908.

Activated carbons were prepared with sugar cane bagasse (BC) and corn cob (ZM) to adsorb aqueous cadmium and lead. BC and ZM were carbonized at 400°C for 1 hour, activated with phosphoric acid and modified with nitric acid or hydrogen peroxide and subsequent heating. Activation increased the surface area of carbons (5 m²/g to 778 m²/g for ZM and 3 m²/g to 369 m²/g for BC). Oxygenated groups were analyzed by IR-DRIFTS. The acidity of carbons was between 1.36 and 2.12 meq/g, pH between 2.9 and 6.5, and ion exchange capacities up to 0.070 meq/g (atomic absorption).

: bagazo de caña; zuro de maíz; cadmio; plomo; carbón activado; carbonizado.

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