Trivalent chromium removal from wastewater using low cost zeolitized mixtures derived from exhausted FCC catalysts

M. R. GONZALEZ; A. M. PEREYRA; E. I. BASALDELLA

Nápoles

Congreso; 10th Congress of Italian Zeolite Association. Advances in Zeolite Science and Technology An International Symposium celebrating Carmine Colella?s 70th birthday; 2011

Italian Zeolite Association

To find reliable methods for the prevention and control of MIC is one of the main achievements still pending for the research and applied engineering. Two main approaches have been used in recent years: the inhibition of microbial adhesion to avoid biofilm formation and the optimization of biocide formula. In this presentation we will introduce an entirely new approach through the use of synthetic zeolites containing biocidic cations (Ag+1, Zn+2) in their exchange positions, inside the zeolitic cages.  The zeolite network would allow the delivery of these biocides at a nanometric level facilitating the optimization of their dosage and utilization. This paper reviews the potential of this non-conventional, environmentally friendly approach for the control and mitigation of MIC in the industry.   Key words : zeolites, biocides, biofilms, meso and microporous materials, exhausted FCC catalyst .