Trivalent Chromium Ion Removal from Aqueous Solutions Using Low-Cost Zeolitic Materials Obtained from Exhausted FCC Catalysts

Maximiliano R. González, Andrea M. Pereyra, Elena I. Basaldella
2011 Adsorption Science & Technology  
The hydrothermal treatment of exhausted FCC catalysts with zeolite was optimized by varying the chemical composition of the synthesis mixture. The zeolitic products obtained were used to evaluate their ability for the capture of Cr(III) cations from aqueous solutions. It was shown that the zeolitic product materials were capable of reducing the Cr(III) ion concentration to values lower than 1.2 ppm. The chromium ion-containing solids were afterwards solidified in cement mortars on which
more » ... rs on which leaching studies of this cation were made. The results obtained showed that the synthesized solids acted as effective Cr(III) ion immobilizers and that their inclusion as additives in cement formulations could provide an environmental friendly disposal procedure. † Published in the Festschrift of the journal dedicated to Prof essor Giorgio Zgrablich on the occasion of his 70th birthday and to celebrate his 50 years as a faculty member at
doi:10.1260/0263-6174.29.7.629 fatcat:hn5jmerdzfdflhodysbnpi6l5i