| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Csetényi, L. J.
University of Dundee
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (24/24 displayed)
- 2024Mechanical processing of wet stored fly ash for use as a cement component in concrete
- 2024Assessing setting times of cementitious materials using semi‑adiabatic calorimetry
- 2023Portlandcementek Kötési Idejének Meghatározása Féladiabatikus Kalorimetriás Módszerrel
- 2023Fungal biorecovery of cerium as oxalate and carbonate biomineralscitations
- 2022Impact of fly ash production and sourcing changes on chemical and physical aspects of concrete durabilitycitations
- 2022Fungal colonization and biomineralization for bioprotection of concretecitations
- 2022Influence of wet storage on fly ash reactivity and processing for use in concretecitations
- 2022Fungal-induced CaCO3 and SrCO3 precipitationcitations
- 2021Potential of Weathered Blast Furnace Slag for use as an Addition in Concretecitations
- 2020Oil-based mud waste reclamation and utilisation in low-density polyethylene compositescitations
- 2019Direct and indirect bioleaching of cobalt from low grade laterite and pyritic ores by Aspergillus nigercitations
- 2019Amino acid secretion influences the size and composition of copper carbonate nanoparticles synthesized by ureolytic fungicitations
- 2017Evaluation of Fly Ash Reactivity Potential Using a Lime Consumption Testcitations
- 2016Abrasion resistance of sustainable green concrete containing waste tire rubber particlescitations
- 2016Performance Characteristics of Waste Glass Powder Substituting Portland Cement in Mortar Mixturescitations
- 2015Influence of Portland cement characteristics on air-entrainment in fly ash concretecitations
- 2015Sustainable use of marble slurry in concretecitations
- 2015Durability studies on concrete containing wollastonitecitations
- 2013Mechanical and durability studies on concrete containing wollastonite-fly ash combinationcitations
- 2013Evaluating Test Methods for Rapidly Assessing Fly Ash Reactivity for Use in Concrete
- 2010Mechanisms of sulfate heave prevention in lime stabilized clays through pozzolanic additionscitations
- 2003Alkali activation of PFA
- 2002Effect of potassium on setting times of borate admixed cement pastes
- 2001Phase equilibrium study in the CaO-K2O-B2O3-H2O system at 25°Ccitations
Places of action
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article
Fungal biorecovery of cerium as oxalate and carbonate biominerals
Abstract
Cerium is the most sought-after rare earth element (REE) for application in high-tech electronic devices and versatile nanomaterials. In this research, biomass-free spent culture media of Aspergillus niger and Neurospora crassa containing precipitant ligands (oxalate, carbonate) were investigated for their potential application in biorecovery of Ce from solution. Precipitation occurred after Ce3+ was mixed with biomass-free spent culture media and >99% Ce was recovered from media of both organisms. SEM showed that biogenic crystals with distinctive morphologies were formed in the biomass-free spent medium of A. niger. Irregularly-shaped nanoparticles with varying sizes ranging from 0.5 to 2 μm and amorphous biominerals were formed after mixing the carbonate-laden N. crassa supernatant, resulting from ureolysis of supplied urea, with Ce3+. Both biominerals contained Ce as the sole metal, and X-ray diffraction (XRD) and thermogravimetric analyses identified the biominerals resulting from the biomass-free A. niger and N. crassa spent media as cerium oxalate decahydrate [Ce2(C2O4)3·10H2O] and cerium carbonate [Ce2(CO3)3·8H2O], respectively. Thermal decomposition experiments showed that the biogenic Ce oxalates and carbonates could be subsequently transformed into ceria (CeO2). FTIR confirmed that both amorphous and nanoscale Ce carbonates contained carbonate (CO32−) groups. FTIR-multivariate analysis could classify the biominerals into three groups according to different Ce concentrations and showed that Ce carbonate biominerals of higher purity were produced when precipitated at higher Ce3+ concentrations. This work provides new understanding of fungal biotransformations of soluble REE species and their biorecovery using biomass-free fungal culture systems and indicates the potential of using recovered REE as precursors for the biosynthesis of novel nanomaterials.