Report of Investigations 8970 Recovery of Platinum, Palladium, and Gold From Stillwater Complex Flotation Concentrate by a Roasting-Leaching Procedure By E. G. Baglin, J. M. Gomes, T. G. Carnahan, and J. M. Snider UNITED STATES DEPARTMENT OF THE INTERIOR
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The adsorption mechanism of PGMs is complex, including various physical and chemical processes such as physical adsorption, ion exchange, molecular recognition, particle electrostatic adsorption, and complexation. ... Recovery of platinum from spent petroleum catalysts: optimization using response surface Methodology. Metals, 9 (3) …
The biological recovery of five common environmental Pt-complexes was studied under acidic conditions; the chloro-complexes PtCl4²⁻ and PtCl6²⁻, the amine …
The recovery of five different platinum complexes was tested using five axenic bacterial cultures. The selection of Pt-complexes consisted of two Pt-chloro complexes (Pt (II)Cl, Pt (IV)Cl ), the Pt-chemotherapy complexes cisplatin () and carboplatin ( [1,1-cyclobutanedicarboxylato])), and a Pt-tetraamine complex (Pt (NH ).
The platinum–GSH complex can be removed from the cell by the transporter MRP2 (Fig. 3). In addition, the formation of cross-links between platinum–DNA monoadducts and the opposite DNA strand can be prevented by reaction of the thiol-containing molecules and the monoadducts. An increased intracellular GSH production …
This article describes the complex and lengthy cycle of operations required to effect complete recovery of the six platinum metals and to yield at the same time electrolytically refined copper and nickel. Today the joint activities of Rustenburg and Johnson Matthey constitute the world's largest source of the platinum metals in all forms.
Platinum (Pt) compounds entered the clinic as anticancer agents when cisplatin was approved in 1978. More than 40 years later, even in the era of precision medicine and immunotherapy, Pt drugs ...
A mineralogical perspective on the recovery of platinum group elements from Merensky Reef and UG2 at the Two Rivers mine on the Eastern limb of the Bushveld Complex in South Africa ... exposed southeastern sector of the eastern Bushveld Complex. S Afr platinum-group minerals. Rev Mineral Geochem 81:489–578 J Geol 110:617–630 …
In the current study, platinum—present as a negligible component (below 1 ppb, the detection limit of the HR-ICP-MS at the dilutions used) in real industrial hydrometallurgical process solutions—was recovered by an electrodeposition–redox replacement (EDRR) method on pyrolyzed carbon (PyC) electrode, a method not earlier applied to metal …
Mineralogy and Petrology (2000) 68: 213±222 The recovery of platinum-group elements from the UG-2 chromitite, Bushveld Complex ± a mineralogical perspective C. J. Penberthy1, E. J Oosthuyzen1, and R. K. W. Merkle2 1 Mintek, Randburg, South Africa 2 Department of Geology, University of Pretoria, South Africa With 6 Figures Received …
In this Article, we report the use of photocatalysis to dissolve and recover a series of PMs (Ag, Au, Pd, Pt, Ru, Rh and Ir) in the absence of strong acids, strong bases and toxic solvents ...
in the hydrometallurgical recovery of PGMs due to higher leachability of complex metals, stability of chloride complexes and regeneration of leaching reagents …
The platinum-group elements (PGE) include platinum, palladium, rhodium, ruthenium, iridium, and osmium. In this article, we concentrate on the dependency structure and economic determinants of PGE ...
The Bushveld Complex is well-known for its large proportion of the world's platinum and palladium resources. There are three very different ore bodies, the Merensky Reef, the Upper Group 2 (UG2 ...
The Bureau of Mines devised a procedure for selectively extracting platinum-group metals (PGM) and gold from Stillwater Complex flotation concentrate. The Stillwater Complex is the only major U.S. PGM resource. Development of a suitable extraction technique will contribute to its exploitation. The concentrate was roasted at 1,050° C to convert host …
The recovery of platinum group-metals (PGMs) has attracted increasing attention owing to their scarcity, economic importance, and criticality. Traditional techniques for PGM recovery often involve the use of toxic reagents and require strict extraction conditions, posing challenges for their implementation in complex environments.
Platinum is a chemical element; it has symbol Pt and atomic number 78. It is ... The cod complex and the halides are convenient starting points to platinum chemistry. ... (IV) may be reduced with elemental zinc, and a similar method is suitable for small scale recovery of platinum from laboratory residues. Mining and refining platinum has ...
PGM recovery from spent catalysts is a challenge due to the fact that spent catalysts are diverse and complex in terms of material and component makeup as well as the original catalyst's manufacturing processes. ... This comprehensive review endeavors to study and assess the latest advancements in the recovery of platinum group metals …
The irreversibility of extraction of a similar platinum group complex, [R 3 NH] 2 [PtCl 6 ] (R = (CH 2 ) 7 CH 3 ), has been previous observed by us. ... Recovery of platinum (IV) from loaded ...
Recovery of platinum group metals (PGM) from complex aqueous solutions generated as a result of leaching of various spent materials (e.g., spent automotive converters) is a vital issue in the context of the circular economy. In this study pyridinium derivatives containing an imidoamide or imine moie …
The recovery of five different platinum complexes was tested using five axenic bacterial cultures. The selection of Pt-complexes consisted of two Pt-chloro …
@inproceedings{Izatt2016SelectiveRO, title={Selective Recovery of Platinum Group Metals and Rare Earth Metals from Complex Matrices Using a Green Chemistry/Molecular Recognition Technology Approach}, author={Steven R. Izatt and James S. McKenzie and Ronald L. Bruening and Reed M. Izatt and Neil E. Izatt and …
The widespread use of platinum in high-tech and catalytic applications has led to the production of diverse Pt loaded wastewaters. Effective recovery strategies are …
Platinum (Pt) compounds entered the clinic as anticancer agents when cisplatin was approved in 1978. More than 40 years later, even in the era of precision …
The best efficiency for platinum and palladium recovery at optimum leaching conditions were 91.94%, and 98.82%, respectively. Keywords: Aqua regia, catalytic converter, PGMs, Platinum, Palladium ...
Summary¶The behaviour of platinum-group elements (PGE) during milling and flotation of the UG-2 chromitite layer is still poorly understood. The PGE in the UG-2 chromitite occur primarily in discrete platinum-group mineral phases, varying from sulphide assemblages (predominantly cooperite, braggite, malanite and laurite) to assemblages …
Previous studies have achieved platinum recovery using aqua regia and acidic solution in the presence of chlorine to produce platinum from spent catalysts on a commercial scale; however, the process generates toxic nitrogen oxide and chlorine gases. ... The resin on which the platinum complex is adsorbed is dried and burned in an …
The targeted capture of platinum from complex and harsh acidic digests such as those platinum-containing secondary resources is essential from the perspectives of green development. ... the core objective of the adsorption method is to achieve efficient targeted recovery of platinum from complex and harsh acidic digestion solution …
