The capacity of synthesized zeolites from Brazilian coal ash for the removal of Cd, Zn ions and methylene blue from aqueous solutions has been investigated. The zeolitic material prepared with coal ash from baghouse filter showed the highest efficiency for pollutants removal. The metal ion selectivity of this product was determined as: Cd2+ > Zn2+. The maximum sorption capacities found were 36.1 mg g-1 for Zn2+, 76.3 mg g-1 for Cd2+ and 3.93 mg g-1 for dye.
zeolitic material; adsorption; coal fly ash
