Unlocking the hidden value of industrial by-products: Optimisation of bioleaching to extract metals from basic oxygen steelmaking dust and goethite

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dc.contributor.authorTezyapar Kara, Ipek
dc.contributor.authorSimmons, Nuannat
dc.contributor.authorWagland, Stuart T.
dc.contributor.authorCoulon, Frederic
dc.date.accessioned2023-10-06T13:03:07Z
dc.date.available2023-10-06T13:03:07Z
dc.date.issued2023-09-28
dc.description.abstractIn this study, the potential of bioleaching to extract valuable metals from industrial by-products, specifically basic oxygen steelmaking dust (BOS-D) and goethite was investigated. These materials are typically discarded due to their high zinc content and lack of efficient regeneration processes. By using Acidithiobacillus ferrooxidans, successful bioleaching of various metals, including heavy metals, critical metals, and rare earth elements was achieved. The Taguchi orthogonal array design was used to optimise the bioleaching process, considering four variables at three different levels. After 14 days, the highest metal extraction for the BOS-D (11.2 mg Zn/g, 3.2 mg Mn/g, 1.6 mg Al/g, 0.0013 mg Y/g, and 0.0026 mg Ce/g) was achieved at 1% solid concentration, 1% energy source concentration, 1% inoculum concentration, and pH 1.5. For goethite, the optimal conditions were 1% solid concentration, 4% energy source concentration, 10% inoculum concentration, and pH 2 resulting in a extraction of 26.6 mg Zn/g, 2.1 mg/g Mn, 1.8 mg Al/g, 0.01 mg Co/g, 0.0022 mg Y/g. These findings are significant, as they demonstrate the potential to extract valuable metals from previously discarded industrial by-products. The extraction of such metals can have substantial economic and environmental implications, while simultaneously reducing waste in the metallurgical industry. Furthermore, the preservation of initial concentration of iron in both BOS-D and goethite residues represents a significant step towards implementing more sustainable industrial practices.en_UK
dc.description.sponsorshipEuropean Union funding: NWE918en_UK
dc.identifier.citationTezyapar Kara I, Simmons N, Wagland ST, Coulon F. (2023) Unlocking the hidden value of industrial by-products: Optimisation of bioleaching to extract metals from basic oxygen steelmaking dust and goethite, Chemosphere, Volume 343, December 2023, Article Number 140244en_UK
dc.identifier.eissn1879-1298
dc.identifier.issn0045-6535
dc.identifier.urihttps://doi.org/10.1016/j.chemosphere.2023.140244
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/20341
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectAcidithiobacillus ferrooxidansen_UK
dc.subjectBioleachingen_UK
dc.subjectMetallurgical by-productsen_UK
dc.subjectMetal dissolutionen_UK
dc.subjectBiohydrometallurgyen_UK
dc.titleUnlocking the hidden value of industrial by-products: Optimisation of bioleaching to extract metals from basic oxygen steelmaking dust and goethiteen_UK
dc.typeArticleen_UK

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