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Spent sulfuric acid plant catalyst: valuable resource of vanadium or risky residue? Process comparison for environmental implications

The enormous amount of spent catalysts generated worldwide may pose a risk to the environment because of their high load of metals, including vanadium. The latter may be mobilized and released to the environment if managed improperly. Moreover, the catalysts could be considered as secondary resource...

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Autores principales: Mikoda, Bartosz, Potysz, Anna, Gruszecka-Kosowska, Agnieszka, Kmiecik, Ewa, Tomczyk, Anna
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8541952/
https://www.ncbi.nlm.nih.gov/pubmed/33111226
http://dx.doi.org/10.1007/s11356-020-11349-z
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author Mikoda, Bartosz
Potysz, Anna
Gruszecka-Kosowska, Agnieszka
Kmiecik, Ewa
Tomczyk, Anna
author_facet Mikoda, Bartosz
Potysz, Anna
Gruszecka-Kosowska, Agnieszka
Kmiecik, Ewa
Tomczyk, Anna
author_sort Mikoda, Bartosz
collection PubMed
description The enormous amount of spent catalysts generated worldwide may pose a risk to the environment because of their high load of metals, including vanadium. The latter may be mobilized and released to the environment if managed improperly. Moreover, the catalysts could be considered as secondary resources rather than waste. This study aimed at the efficient extraction of vanadium from spent desulfurization catalyst (SDC) from a sulfuric acid production plant. The raw SDC and the post-extraction residues were characterized in terms of their chemical and phase composition. The metal mobility from the materials was examined with both single-step and multi-step extractions. The environmental risk assessment was performed using sequential extraction. The study revealed that both tested methods (citric acid leaching and bioleaching with Acidithiobacillus thiooxidans) enable the extraction of nearly 96% of V from SDC with a simultaneous reduction of metal mobility. However, the bacterial treatment was found more suitable. The leached residue was mostly (> 90%) composed of SiO(2), which makes it a potential candidate for application in construction (e.g., concrete mixtures) after additional examinations. The study highlights the need to develop a metal extraction process for SDC in a way that metal-free residue could be a final product.
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spelling pubmed-85419522021-10-27 Spent sulfuric acid plant catalyst: valuable resource of vanadium or risky residue? Process comparison for environmental implications Mikoda, Bartosz Potysz, Anna Gruszecka-Kosowska, Agnieszka Kmiecik, Ewa Tomczyk, Anna Environ Sci Pollut Res Int Recent Developments and Innovative Strategies in Environmental Sciences in Europe The enormous amount of spent catalysts generated worldwide may pose a risk to the environment because of their high load of metals, including vanadium. The latter may be mobilized and released to the environment if managed improperly. Moreover, the catalysts could be considered as secondary resources rather than waste. This study aimed at the efficient extraction of vanadium from spent desulfurization catalyst (SDC) from a sulfuric acid production plant. The raw SDC and the post-extraction residues were characterized in terms of their chemical and phase composition. The metal mobility from the materials was examined with both single-step and multi-step extractions. The environmental risk assessment was performed using sequential extraction. The study revealed that both tested methods (citric acid leaching and bioleaching with Acidithiobacillus thiooxidans) enable the extraction of nearly 96% of V from SDC with a simultaneous reduction of metal mobility. However, the bacterial treatment was found more suitable. The leached residue was mostly (> 90%) composed of SiO(2), which makes it a potential candidate for application in construction (e.g., concrete mixtures) after additional examinations. The study highlights the need to develop a metal extraction process for SDC in a way that metal-free residue could be a final product. Springer Berlin Heidelberg 2020-10-27 2021 /pmc/articles/PMC8541952/ /pubmed/33111226 http://dx.doi.org/10.1007/s11356-020-11349-z Text en © The Author(s) 2020 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Recent Developments and Innovative Strategies in Environmental Sciences in Europe
Mikoda, Bartosz
Potysz, Anna
Gruszecka-Kosowska, Agnieszka
Kmiecik, Ewa
Tomczyk, Anna
Spent sulfuric acid plant catalyst: valuable resource of vanadium or risky residue? Process comparison for environmental implications
title Spent sulfuric acid plant catalyst: valuable resource of vanadium or risky residue? Process comparison for environmental implications
title_full Spent sulfuric acid plant catalyst: valuable resource of vanadium or risky residue? Process comparison for environmental implications
title_fullStr Spent sulfuric acid plant catalyst: valuable resource of vanadium or risky residue? Process comparison for environmental implications
title_full_unstemmed Spent sulfuric acid plant catalyst: valuable resource of vanadium or risky residue? Process comparison for environmental implications
title_short Spent sulfuric acid plant catalyst: valuable resource of vanadium or risky residue? Process comparison for environmental implications
title_sort spent sulfuric acid plant catalyst: valuable resource of vanadium or risky residue? process comparison for environmental implications
topic Recent Developments and Innovative Strategies in Environmental Sciences in Europe
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8541952/
https://www.ncbi.nlm.nih.gov/pubmed/33111226
http://dx.doi.org/10.1007/s11356-020-11349-z
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