Results 11 to 20 of about 17,636 (258)

A new approach to recover platinum-group metals from spent catalytic converters via iron matte

open access: yesResources, Conservation and Recycling, 2020
Decreasing stocks of natural resources and continuously increasing demand for platinum-group metals (PGMs) sustain interest in studies on spent catalytic converters. Recycling spent catalytic converters to extract PGMs not only provides raw materials for
M. Morcalı
semanticscholar   +5 more sources

Oxidative leaching process with cupric ion in hydrochloric acid media for recovery of Pd and Rh from spent catalytic converters. [PDF]

open access: yesJournal of Hazardous Materials, 2014
The recycling of platinum-group metals from wastes such as autocatalytic converters is getting growing attention due to the scarcity of these precious metals and the market pressure originated by increase of demand in current and emerging applications. Hydrometallurgical treatment of such wastes is an alternative way to the most usual pyrometallurgical
Carlos A. Nogueira   +4 more
semanticscholar   +6 more sources

Recovery of platinum group metals from spent automotive catalysts: A review

open access: yesCleaner Engineering and Technology, 2021
In the last decades, a worldwide investment in the recovery or substitution of platinum group metals (PGMs) has been financed. PGMs have been classified as critical raw materials (CRMs), thus a circular economy model should be implemented for their ...
Iakovos Yakoumis   +3 more
doaj   +4 more sources

Recovery of platinum group metals from spent automotive converters and their conversion into efficient recyclable nanocatalysts. [PDF]

open access: yesEnviron Sci Pollut Res Int, 2023
The study reported in this article has shown for the first time that strongly acidic solutions (pH 
Wiecka Z   +3 more
europepmc   +2 more sources

NO and C Oxidation with Pt Recovered From Spent Catalytic Converters [PDF]

open access: yesWaste and Biomass Valorization, 2010
Several powder samples obtained from a spent catalytic converter, which contained approximately 1.1% w/w of platinum (Pt), were subjected to a leaching process to assess the relationships between the amount of recovered Pt, the time, and the temperature of the leaching process.
J. Caroca   +5 more
semanticscholar   +4 more sources

Extraction of platinum group metals from catalytic converters. [PDF]

open access: yesHeliyon
Platinum group metals (PGMs) assume an important role within the chemistry and chemical engineering due to their exceptional chemical stability in high temperatures and various environmental conditions.
Chidunchi I   +3 more
europepmc   +2 more sources

Biotechnological valorisation of Spent Automotive Catalytic Converters: Marine microorganisms in PGE leaching and recovery

open access: yesJournal of Environmental Chemical Engineering
L. Vitale   +13 more
semanticscholar   +2 more sources

Selective Adsorptive Recovery of Platinum from Spent Catalytic Converter

open access: yesChemical Engineering Transactions, 2022
Ethylene glycol dimethacrylate (EGDMA) – dithiadiamide (DTDA) copolymer was synthesized by condensation reaction between monomeric mercaptoacetamide and ?-dibromoalkanes. This previously designed DTDA was complexed with Pt2+ before direct copolymerization with EGDMA. Pt2+-template was eluted with dilute HCl.
Limjuco Lawrence A., Ocon Joey D.
openaire   +2 more sources

Influence of H2O2 and O3 on PGM Extraction from Used Car Catalysts [PDF]

open access: yesArchives of Metallurgy and Materials, 2018
Catalytic converters contain the catalytic substance in their structure, which is a mixture of Platinum Group Metals (PGMs). The prices of these metals and a growing demand for them in the market, make it necessary to recycle spent catalytic converters ...
A. Fornalczyk   +3 more
doaj   +1 more source

Dissolution of Metal Supported Spent Auto Catalysts in Acids

open access: yesArchives of Metallurgy and Materials, 2016
Metal supported auto catalysts, have been used in sports and racing cars initially, but nowadays their application systematically increases. In Metal Substrate (supported) Converters (MSC), catalytic functions are performed by the Platinum Group Metals ...
Fornalczyk A.   +6 more
doaj   +1 more source

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