Platinum(II) reduction to platinum nanoparticles in anaerobic sludge

Alvaro Simon-Pascual; Reyes Sierra-Alvarez; Jim A. Field

doi:10.1002/jctb.5791

Platinum(II) reduction to platinum nanoparticles in anaerobic sludge

Alvaro Simon-Pascual, Reyes Sierra-Alvarez, Jim A. Field

Chemical and Environmental Engineering

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

BACKGROUND: To help mitigate future problems in the supply of platinum group metals (PGM) due to their scarcity and high demand, new recovery processes must be developed. Microbial processes are a great alternative for the recovery of PGM from waste since they are clean and environmentally friendly techniques. This research studied the microbial reduction of Pt(II) using an anaerobic granular sludge under different physiological conditions. RESULTS: The anaerobic granular sludge was able to reduce Pt(II) to Pt(0) nanoparticles that were deposited intracellularly as well as extracellularly as confirmed by X-ray diffraction (XRD) and transmission electron microscopy (TEM) analyses. Hydrogen (H₂) and formate supported the chemical reduction of Pt(II) while ethanol supported the biologically catalyzed reduction of Pt(II). Increasing initial concentrations of Pt(II), ethanol or biomass were each shown to increase the Pt(II) reduction rates. CONCLUSIONS: This study reported for the first time the reduction of Pt(II) using anaerobic granular sludge and provided insights that could help develop biorecovery techniques to alleviate future problems in the supply of PGMs.

Original language	English (US)
Pages (from-to)	468-474
Number of pages	7
Journal	Journal of Chemical Technology and Biotechnology
Volume	94
Issue number	2
DOIs	https://doi.org/10.1002/jctb.5791
State	Published - Feb 2019

Keywords

environmental remediation
metals
methanogenesis
recovery
sludge

ASJC Scopus subject areas

Biotechnology
General Chemical Engineering
Renewable Energy, Sustainability and the Environment
Fuel Technology
Waste Management and Disposal
Pollution
Organic Chemistry
Inorganic Chemistry

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10.1002/jctb.5791

Cite this

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title = "Platinum(II) reduction to platinum nanoparticles in anaerobic sludge",

abstract = "BACKGROUND: To help mitigate future problems in the supply of platinum group metals (PGM) due to their scarcity and high demand, new recovery processes must be developed. Microbial processes are a great alternative for the recovery of PGM from waste since they are clean and environmentally friendly techniques. This research studied the microbial reduction of Pt(II) using an anaerobic granular sludge under different physiological conditions. RESULTS: The anaerobic granular sludge was able to reduce Pt(II) to Pt(0) nanoparticles that were deposited intracellularly as well as extracellularly as confirmed by X-ray diffraction (XRD) and transmission electron microscopy (TEM) analyses. Hydrogen (H2) and formate supported the chemical reduction of Pt(II) while ethanol supported the biologically catalyzed reduction of Pt(II). Increasing initial concentrations of Pt(II), ethanol or biomass were each shown to increase the Pt(II) reduction rates. CONCLUSIONS: This study reported for the first time the reduction of Pt(II) using anaerobic granular sludge and provided insights that could help develop biorecovery techniques to alleviate future problems in the supply of PGMs.",

keywords = "environmental remediation, metals, methanogenesis, recovery, sludge",

author = "Alvaro Simon-Pascual and Reyes Sierra-Alvarez and Field, {Jim A.}",

note = "Funding Information: We are very grateful to Dr T. Day and Dr A. Weichsel for their valuable assistance with the TEM and XRD analyses. This work was funded in part by a grant from the National Institute of Health (NIH ES-04940). Publisher Copyright: {\textcopyright} 2018 Society of Chemical Industry",

year = "2019",

month = feb,

doi = "10.1002/jctb.5791",

language = "English (US)",

volume = "94",

pages = "468--474",

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TY - JOUR

T1 - Platinum(II) reduction to platinum nanoparticles in anaerobic sludge

AU - Simon-Pascual, Alvaro

AU - Sierra-Alvarez, Reyes

AU - Field, Jim A.

N1 - Funding Information: We are very grateful to Dr T. Day and Dr A. Weichsel for their valuable assistance with the TEM and XRD analyses. This work was funded in part by a grant from the National Institute of Health (NIH ES-04940). Publisher Copyright: © 2018 Society of Chemical Industry

PY - 2019/2

Y1 - 2019/2

N2 - BACKGROUND: To help mitigate future problems in the supply of platinum group metals (PGM) due to their scarcity and high demand, new recovery processes must be developed. Microbial processes are a great alternative for the recovery of PGM from waste since they are clean and environmentally friendly techniques. This research studied the microbial reduction of Pt(II) using an anaerobic granular sludge under different physiological conditions. RESULTS: The anaerobic granular sludge was able to reduce Pt(II) to Pt(0) nanoparticles that were deposited intracellularly as well as extracellularly as confirmed by X-ray diffraction (XRD) and transmission electron microscopy (TEM) analyses. Hydrogen (H2) and formate supported the chemical reduction of Pt(II) while ethanol supported the biologically catalyzed reduction of Pt(II). Increasing initial concentrations of Pt(II), ethanol or biomass were each shown to increase the Pt(II) reduction rates. CONCLUSIONS: This study reported for the first time the reduction of Pt(II) using anaerobic granular sludge and provided insights that could help develop biorecovery techniques to alleviate future problems in the supply of PGMs.

AB - BACKGROUND: To help mitigate future problems in the supply of platinum group metals (PGM) due to their scarcity and high demand, new recovery processes must be developed. Microbial processes are a great alternative for the recovery of PGM from waste since they are clean and environmentally friendly techniques. This research studied the microbial reduction of Pt(II) using an anaerobic granular sludge under different physiological conditions. RESULTS: The anaerobic granular sludge was able to reduce Pt(II) to Pt(0) nanoparticles that were deposited intracellularly as well as extracellularly as confirmed by X-ray diffraction (XRD) and transmission electron microscopy (TEM) analyses. Hydrogen (H2) and formate supported the chemical reduction of Pt(II) while ethanol supported the biologically catalyzed reduction of Pt(II). Increasing initial concentrations of Pt(II), ethanol or biomass were each shown to increase the Pt(II) reduction rates. CONCLUSIONS: This study reported for the first time the reduction of Pt(II) using anaerobic granular sludge and provided insights that could help develop biorecovery techniques to alleviate future problems in the supply of PGMs.

KW - environmental remediation

KW - metals

KW - methanogenesis

KW - recovery

KW - sludge

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Platinum(II) reduction to platinum nanoparticles in anaerobic sludge

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