ACIDIC REMOVAL OF METALS FROM FLUIDIZED CATALYTIC CRACKING CATALYST WASTE ASSISTED BY ELECTROKINETIC TREATMENT
AUTOR(ES)
Valt, R. B. G., Diógenes, A. N., Sanches, L. S., Kaminari, N. M. S., Ponte, M. J. J. S., Ponte, H. A.
FONTE
Braz. J. Chem. Eng.
DATA DE PUBLICAÇÃO
2015-06
RESUMO
AbstractOne of the main uses of catalysts in the oil industry is in the fluidized catalytic cracking process, which generates large quantities of waste material after use and regeneration cycles and that can be treated by the electrokinetic remediation technique, in which the contaminant metals are transported by migration. In this study, deactivated FCC catalyst was characterized before and after the electrokinetic remediation process to evaluate the amount of metal removed, and assess structural modifications, in order to indicate a possible use as an adsorbent material. The analyses included pH measurement and the concentration profile of vanadium ions along the reactor, X-ray microtomography, X-ray fluorescence, BET analysis and DTA analysis. The results indicated that 40% of the surface area of the material was recovered in relation to the disabled material, showing an increase in the available area for the adsorption. The remediation process removed nearly 31% of the vanadium and 72% of the P2O5 adhering to the surface of the catalyst, without causing structural or thermal stability changes.
Documentos Relacionados
- Uso do resíduo de catalisador de processo de craqueamento catalítico fluído de hidrocarbonetos em refratários silicoaluminosos = use of catalyst waste from hydrocarbon fluid catalytic cracking process in alumina-silica refractories
- Yield of aromatics from naphthenics upon catalytic cracking
- Catalytic Cracking of Soybean Oil for Biofuel over γ-Al2O3/CaO Composite Catalyst
- Electroremediation of deactivated catalysts from fluidised catalytic cracking for vanadium removal - the effect of a dual cathode chamber reactor
- Hexene catalytic cracking over 30% sapo-34 catalyst for propylene maximization: influence of reaction conditions and reaction pathway exploration