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

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dc.contributor.author Haneklaus, Nils H.
dc.contributor.author Mwalongo, Dennis A.
dc.contributor.author Lisuma, Jacob B.
dc.contributor.author Amasi, Aloyce I.
dc.contributor.author Mwimanzi, Jerome
dc.contributor.author Bituh, Tomislav
dc.contributor.author Ciric, Jelena
dc.contributor.author Nowak, Jakub
dc.contributor.author Ryszko, Urszula
dc.contributor.author Rusek, Piotr
dc.contributor.author Maged, Ali
dc.contributor.author Bilal, Essaid
dc.contributor.author Bellefqih, Hajar
dc.contributor.author Qamouche, Khaoula
dc.contributor.author Brahim, Jamal Ait
dc.contributor.author Beniazza, Redouane
dc.contributor.author Mazouz, Hamid
dc.contributor.author Van der Merwe, Elizabet Margaretha
dc.contributor.author Truter, Wayne
dc.contributor.author Kyomuhimbo, Hilda Dinah
dc.contributor.author Brink, Hendrik Gideon
dc.contributor.author Steiner, Gerald
dc.contributor.author Bertau, Martin
dc.contributor.author Soni, Raghav S.
dc.contributor.author Patwardhan, Ashwin W.
dc.contributor.author Ghosh, Pushpito K.
dc.contributor.author Kivevele, Thomas T.
dc.contributor.author Mtei, Kelvin M.
dc.contributor.author Waclawek, Stanislaw
dc.date.accessioned 2024-09-17T07:22:59Z
dc.date.available 2024-09-17T07:22:59Z
dc.date.issued 2024-08
dc.description DATA AVAILABILITY : Data will be made available on request. en_US
dc.description.abstract Minjingu 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.department Chemical Engineering en_US
dc.description.department Chemistry en_US
dc.description.librarian hj2024 en_US
dc.description.sdg SDG-09: Industry, innovation and infrastructure en_US
dc.description.sponsorship The 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.uri https://www.sciencedirect.com/journal/resources-conservation-and-recycling en_US
dc.identifier.citation Haneklaus, 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.issn 0921-3449 (print)
dc.identifier.issn 1879-0658 (online)
dc.identifier.other 10.1016/j.resconrec.2024.107694
dc.identifier.uri http://hdl.handle.net/2263/98247
dc.language.iso en en_US
dc.publisher Elsevier en_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.subject Minjingu phosphate ore en_US
dc.subject Rare earth elements (REEs) en_US
dc.subject Uranium en_US
dc.subject Circular economy en_US
dc.subject Tanzania en_US
dc.subject SDG-09: Industry, innovation and infrastructure en_US
dc.title Rare earth elements and uranium in Minjingu phosphate fertilizer products : plant food for thought en_US
dc.type Article en_US


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