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Vanadium removal from spent sulfuric acid plant catalyst using citric acid and Acidithiobacillus thiooxidans
https://orcid.org/http://orcid.org/0000-0002-0125-9247
https://orcid.org/http://orcid.org/0000-0002-7034-367X
https://orcid.org/http://orcid.org/0000-0003-3249-4642
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 < 0.2-mm particle size and 2% pulp density, which allowed to leach out 95% of V from spent catalyst within 48 h. The bacterially mediated extraction resulted in 93% V leached out within 21 days with 2% pulp density. The experiments showed that V present in the catalyst is susceptible to bioleaching and organic acid leaching with the latter being a quicker process.
Vanadium removal from spent sulfuric acid plant catalyst using citric acid and Acidithiobacillus thiooxidans
https://orcid.org/http://orcid.org/0000-0002-0125-9247
https://orcid.org/http://orcid.org/0000-0002-7034-367X
https://orcid.org/http://orcid.org/0000-0003-3249-4642
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 < 0.2-mm particle size and 2% pulp density, which allowed to leach out 95% of V from spent catalyst within 48 h. The bacterially mediated extraction resulted in 93% V leached out within 21 days with 2% pulp density. The experiments showed that V present in the catalyst is susceptible to bioleaching and organic acid leaching with the latter being a quicker process.
Vanadium removal from spent sulfuric acid plant catalyst using citric acid and Acidithiobacillus thiooxidans
https://orcid.org/http://orcid.org/0000-0002-0125-9247
https://orcid.org/http://orcid.org/0000-0002-7034-367X
https://orcid.org/http://orcid.org/0000-0003-3249-4642
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 < 0.2-mm particle size and 2% pulp density, which allowed to leach out 95% of V from spent catalyst within 48 h. The bacterially mediated extraction resulted in 93% V leached out within 21 days with 2% pulp density. The experiments showed that V present in the catalyst is susceptible to bioleaching and organic acid leaching with the latter being a quicker process.
Vanadium removal from spent sulfuric acid plant catalyst using citric acid and Acidithiobacillus thiooxidans
Archiv.Civ.Mech.Eng
Mikoda, Bartosz (author) / Potysz, Anna (author) / Kucha, Harry (author) / Kmiecik, Ewa (author)
2020-10-19
Article (Journal)
Electronic Resource
English
| Springer Verlag | 2020
Bioleaching of arsenic from highly contaminated mine tailings using Acidithiobacillus thiooxidans
| Online Contents | 2015
| British Library Online Contents | 2002
Vanadium recovery from spent acid-making catalyst
| British Library Online Contents | 2010