Rare earth elements and uranium in Minjingu phosphate fertilizer products : plant food for thought

dc.contributor.authorHaneklaus, Nils H.
dc.contributor.authorMwalongo, Dennis A.
dc.contributor.authorLisuma, Jacob B.
dc.contributor.authorAmasi, Aloyce I.
dc.contributor.authorMwimanzi, Jerome
dc.contributor.authorBituh, Tomislav
dc.contributor.authorCiric, Jelena
dc.contributor.authorNowak, Jakub
dc.contributor.authorRyszko, Urszula
dc.contributor.authorRusek, Piotr
dc.contributor.authorMaged, Ali
dc.contributor.authorBilal, Essaid
dc.contributor.authorBellefqih, Hajar
dc.contributor.authorQamouche, Khaoula
dc.contributor.authorBrahim, Jamal Ait
dc.contributor.authorBeniazza, Redouane
dc.contributor.authorMazouz, Hamid
dc.contributor.authorVan der Merwe, Elizabet Margaretha
dc.contributor.authorTruter, Wayne
dc.contributor.authorKyomuhimbo, Hilda Dinah
dc.contributor.authorBrink, Hendrik Gideon
dc.contributor.authorSteiner, Gerald
dc.contributor.authorBertau, Martin
dc.contributor.authorSoni, Raghav S.
dc.contributor.authorPatwardhan, Ashwin W.
dc.contributor.authorGhosh, Pushpito K.
dc.contributor.authorKivevele, Thomas T.
dc.contributor.authorMtei, Kelvin M.
dc.contributor.authorWaclawek, Stanislaw
dc.date.accessioned2024-09-17T07:22:59Z
dc.date.available2024-09-17T07:22:59Z
dc.date.issued2024-08
dc.descriptionDATA AVAILABILITY : Data will be made available on request.en_US
dc.description.abstractMinjingu phosphate ore is Tanzania's sole domestic supply of phosphorus (P). The ore contains medium to high concentrations of naturally occurring P2O5 (20–35 %) and relevant concentrations of uranium and rare earth elements (REEs) are also suspected to be present. Currently, neither uranium nor REEs are recovered. They either end up in mine tailings or are spread across agricultural soils with fertilizer products. This work provides a first systematic review of the uranium and REE concentrations that can be expected in the different layers of Minjingu phosphate ore, the way the ore is presently processed, as well as a discussion on alternative processing pathways with uranium/REE recovery. The study analyzed ten distinct Minjingu phosphate ore layers, four mine tailings, and five intermediate and final mineral fertilizer products from the Minjingu mine and processing plant located in northern Tanzania. The results confirm that the uranium concentrations and to a lesser degree, the REE concentrations are indeed elevated if compared to concentrations in other phosphate ores. The study does not identify a significant risk resulting from this. The development of techno-economic solutions for more comprehensive utilization of Minjingu ore is, however, strongly encouraged and suggestions on such processes are provided.en_US
dc.description.departmentChemical Engineeringen_US
dc.description.departmentChemistryen_US
dc.description.librarianhj2024en_US
dc.description.sdgSDG-09: Industry, innovation and infrastructureen_US
dc.description.sponsorshipThe Tanzania Atomic Energy Commission (TAEC), Nelson Mandela African Institution of Science and Technology (NM-AIST), the Austrian Federal Ministry of Education, Science and Research (BMBWF) through Austria's Agency for Education and Internationalization (OeAD) and BMBWF/OeAD support through a Ernst Mach Grant.en_US
dc.description.urihttps://www.sciencedirect.com/journal/resources-conservation-and-recyclingen_US
dc.identifier.citationHaneklaus, N.H., Mwalongo, D.A., Lisuma, J.B. et al. 2024, 'Rare earth elements and uranium in Minjingu phosphate fertilizer products: plant food for thought', Resources, Conservation and Recycling, vol. 207, art. 107694, pp. 1-13, doi ; 10.1016/j.resconrec.2024.107694.en_US
dc.identifier.issn0921-3449 (print)
dc.identifier.issn1879-0658 (online)
dc.identifier.other10.1016/j.resconrec.2024.107694
dc.identifier.urihttp://hdl.handle.net/2263/98247
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.rights© 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).en_US
dc.subjectMinjingu phosphate oreen_US
dc.subjectRare earth elements (REEs)en_US
dc.subjectUraniumen_US
dc.subjectCircular economyen_US
dc.subjectTanzaniaen_US
dc.subjectSDG-09: Industry, innovation and infrastructureen_US
dc.titleRare earth elements and uranium in Minjingu phosphate fertilizer products : plant food for thoughten_US
dc.typeArticleen_US

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