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Adsorption isotherms were measured for Pb(II) and Cr(VI) systems adsorption from aqueous solutions on activated carbon obtained from sugar cane bagasse (CAB) and eucalyptus sawdust (CAA) in a batch-type absorber. It was found that their adsorption capacity increases between 5 and 30% among the physical and chemical activated carbons. The investigated ions were mainly adsorbed on the carboxylic groups...
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