Evaluation of Transport Phenomena for Removing Vanadium from Petrochemical Industry Solid Waste

Transport phenomena are investigated which are involved in the electrokinetic remediation process used for removing vanadium from deactivated catalysts from oil catalytic cracking that are currently allotted to cement plants and class‐I landfills. Variables such as the concentration of electrolyte,...

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Bibliographic Details
Published in:Chemical engineering & technology 2020-07, Vol.43 (7), p.1393-1401
Main Authors: Deniz, Amanda Broska da Cruz, Valt, Renata Bachmann Guimarães, Ponte, Maria José Jerônimo de Santana, Ponte, Haroldo de Araújo
Format: Article
Language:English
Subjects:
Catalysts
Catalytic cracking
Deactivated catalyst
Deactivation
Diffusion effects
Electrokinetic remediation
Electrokinetics
Electromigration
Electroosmosis
Migration flow
Remediation
Transport phenomena
Vanadium
Vanadium removal
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Summary:Transport phenomena are investigated which are involved in the electrokinetic remediation process used for removing vanadium from deactivated catalysts from oil catalytic cracking that are currently allotted to cement plants and class‐I landfills. Variables such as the concentration of electrolyte, electric potential, and applied electric current were evaluated in order to determine the effects produced by electroosmosis, diffusion, hydraulic gradient, and electromigration on the removal of vanadium from the catalyst. It was observed that migration is the most relevant phenomenon in the remediation tests, and for the best remediation condition, the migratory flow accounted for about 87 % of the vanadium removal. Spent refinery catalysts are mainly treated by leaching and the electrokinetic remediation technique is best known for its performance in soil treatment. A scientific gain is presented by evaluating the transport phenomena that occur during application of the electrokinetic remediation technique in a refinery catalyst spent for vanadium removal, verifying that the migratory flow governs the process.
ISSN:0930-7516
1521-4125
DOI:10.1002/ceat.201900630