Biomineralization of Pd nanoparticles using Phanerochaete chrysosporium as a sustainable approach to turn platinum group metals (PGMs) wastes into catalysts
journal contributionposted on 20.05.2020, 10:49 by Sophie Tarver, Daniel Gray, Konstantin Loponov, Diganta DasDiganta Das, Tao SunTao Sun, Maria Sotenko
Due to the increasing demand for recovery of precious metals from waste streams, the role of fungus as a potential adsorbent is growing. Thus, this research aimed to develop a novel method for the biomineralization of palladium nanoparticles using Phanerochaete chrysosporium fungus. The adsorption of palladium onto the fungal mycelium was studied by adding palladium salt at 12–48 ppm to the fermentation medium following the fungal growth. Amide groups of chitin and proteins on the surface of the fungus are believed to coordinate palladium cations yielding Freundlich-type competitive adsorption isotherm. The adsorption capacity was found to reach 22-128 mgPd g−1 of dried fungal biomass. Biomineralization of palladium from an aqueous solution led to the formation of extracellular well defined Pd nanoparticles of 10–14 nm confirmed by XPS, TEM and XRD analyses. The biologically synthesised nanoparticles were found to perform equally well to a Pd/C commercial catalyst in a Heck reaction of styrene and iodobenzene. This is the first reported use of Phanerochaete chrysosporium to synthesise palladium nanoparticles and confirmation of their resulting catalytic activity. The presented example paves the way for the development of fungi-based membranes to be used in the palladium recovery from industrial effluents.
- Aeronautical, Automotive, Chemical and Materials Engineering
- Chemical Engineering
Published inInternational Biodeterioration & Biodegradation
VersionAM (Accepted Manuscript)
Rights holder© Elsevier Ltd
Publisher statementThis paper was accepted for publication in the journal International Biodeterioration & Biodegradation and the definitive published version is available at https://doi.org/10.1016/j.ibiod.2019.104724.
DepositorDr Diganta Das. Deposit date: 19 May 2020
Science & TechnologyLife Sciences & BiomedicineBiotechnology & Applied MicrobiologyEnvironmental SciencesEnvironmental Sciences & EcologyWHITE-ROT FUNGUSEXTRACELLULAR BIOSYNTHESISHETEROGENEOUS CATALYSTSILVER NANOPARTICLESBACTERIAL BIOMASSHEAVY-METALSRECOVERYBIOACCUMULATIONHYDROGENATIONBiotechnologyBiological Sciences