Vanadium removal from spent sulfuric acid plant catalyst using citric acid and Acidithiobacillus thiooxidans
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(2020) 20:132
ORIGINAL ARTICLE
Vanadium removal from spent sulfuric acid plant catalyst using citric acid and Acidithiobacillus thiooxidans Bartosz Mikoda1 · Anna Potysz2 · Harry Kucha1 · Ewa Kmiecik1 Received: 19 February 2020 / Revised: 26 August 2020 / Accepted: 5 October 2020 © The Author(s) 2020
Abstract Spent catalysts being considered hazardous wastes exhibit a high metal content in mobile forms. In addition, growing demand for circular economy policy applications requires proper utilization of these wastes. This study aimed at the assessment of vanadium leaching from spent desulfurization catalyst derived from sulfuric acid plant dump located nearby a copper smelter. Chemical and phase composition of the catalyst has been characterized. The extraction has been performed using chemical (0.1-M and 1-M citric acid) and biological (biotic solution with Acidithiobacillus thiooxidans) methods, using different experimental parameters (pulp density, particle size, leaching time) to observe V leaching behavior and kinetics. The results revealed that both citric acid and bacteria carried out the extraction process well. The optimal parameters for acid leaching were
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