Bioleaching of Phosphate Minerals Using Aspergillus niger: Recovery of Copper and Rare Earth Elements

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dc.contributor.authorCastro Ruiz, Laura
dc.contributor.authorBlázquez Izquierdo, María Luisa
dc.contributor.authorGonzález González, Felisa
dc.contributor.authorMuñoz Sánchez, Jesús Ángel
dc.date.accessioned2023-12-13T14:57:31Z
dc.date.available2023-12-13T14:57:31Z
dc.date.issued2020
dc.description.abstractRare earth elements (REE) are essential in high-technology and environmental applications, where their importance and demand have grown enormously over the past decades. Many lanthanide and actinide minerals in nature are phosphates. Minerals like monazite occur in small concentrations in common rocks that resist weathering. Turquoise is a hydrous phosphate of copper and aluminum scarcely studied as copper ore. Phosphate-solubilizing microorganisms are able to transform insoluble phosphate into a more soluble form which directly and/or indirectly contributes to their metabolism. In this study, bioleaching of heavy metals from phosphate minerals by using the fungus Aspergillus niger was investigated. Bioleaching experiments were examined in batch cultures with different mineral phosphates: aluminum phosphate (commercial), turquoise, and monazite (natural minerals). The experiments were performed at 1% pulp density and the phosphorous leaching yield was aluminum phosphate > turquoise > monazite. Bioleaching experiments with turquoise showed that A. niger was able to reach 8.81 mg/l of copper in the aqueous phase. Furthermore, the fungus dissolved the aluminum cerium phosphate hydroxide in monazite, reaching up to 1.37 mg/L of REE when the fungus was grown with the mineral as the sole phosphorous source. Furthermore, A. niger is involved in the formation of secondary minerals, such as copper and REE oxalates.
dc.description.departmentDepto. de Ingeniería Química y de Materiales
dc.description.facultyFac. de Ciencias Químicas
dc.description.refereedTRUE
dc.description.sponsorshipUniversidad Complutense de Madrid
dc.description.statuspub
dc.identifier.citationCastro, Laura; Blázquez, Maria Luisa; González, Felisa y Muñoz, Jesus. (2020). Bioleaching of Phosphate Minerals Using Aspergillus niger: Recovery of Copper and Rare Earth Elements. Metals. 10. 978. 10.3390/met10070978.
dc.identifier.doi10.3390/met10070978
dc.identifier.issn2075-4701
dc.identifier.officialurlhttps://doi.org/10.3390/met10070978
dc.identifier.urihttps://hdl.handle.net/20.500.14352/91231
dc.issue.number7
dc.journal.titleMetals
dc.language.isoeng
dc.page.initial978
dc.publisherMDPI
dc.relation.projectIDPR87/19-22648
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internationalen
dc.rights.accessRightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.cdu577.1
dc.subject.keywordAspergillus niger
dc.subject.keywordmineral phosphate
dc.subject.keywordBioleaching
dc.subject.keywordRare earth elements
dc.subject.ucmMetalurgia
dc.subject.ucmMateriales
dc.subject.unesco3303 Ingeniería y Tecnología Químicas
dc.titleBioleaching of Phosphate Minerals Using Aspergillus niger: Recovery of Copper and Rare Earth Elements
dc.typejournal article
dc.type.hasVersionVoR
dc.volume.number10
dspace.entity.typePublication
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relation.isAuthorOfPublication7899c2ed-268c-4693-973f-e26749d0fa55
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relation.isAuthorOfPublication.latestForDiscovery93b5b649-29f0-4442-b669-6ee59981ae2b
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