precious metals Articles

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Activated Carbon for Precious Metals Recovery

by Calgon Carbon Corporation  (Feb. 1, 1987)

Untitled Document Summary: Guidelines are presented for the selection, handling and regeneration of activated carbon used in gold recovery operations. The guidelines are based ...

Global Initiatives to Increase the Sustainable Use of Precious Metals

by SGS  (Oct. 25, 2012)

The period from September through to January sees a number of important holidays for many countries and these holidays represent the peak season for gift giving. Many people’s thoughts often turn to luxury items such as jewelry as well as to electronic items such as mobile phones, MP3 players and the like. ...

E-scrap: metals too precious to ignore

by Recycling International  (Nov. 20, 2008)

Increased recovery of waste electrical and electronic equipment (WEEE) is providing the global recycling industry with fresh challenges. Researchers from Berlin’s University of Technology have been taking a close look at the material flowing into and out of the recycling process, paying special attention to the precious metals content. Their main ...

Thermal Plasma Technology Supports Precious Metal Recovery from WEEE

by Tetronics (International) Limited  (Oct. 31, 2011)

The article provides an overview of the history of electrical wastes, where we are today and the potential value that can be generated from recovering the valuable precious metals it contains going forward.   The article also discusses how Tetronics’ patented DC Plasma technology has been successfully employed in a wide range of ...

Efficient Treatment of Complex Wastewaters at Umicore Precious Metals using Biotechnology

by Paques B.V.  (Jan. 1, 2005)

Untitled Document Paques and Umicore have demonstrated the feasibility of biological treatment of the highly complex Hoboken wastewaters in ...

BlueOak - Precious metal recovery from electronics waste - Case Study

by Tetronics (International) Limited  (Mar. 16, 2016)

The Challenge In the US, consumers alone dispose of some 3.2 million tonnes of e-waste annually; more than 80% of this ends up as waste, contributing >70% of all toxic metals in U.S. landfills. In a bid to tackle this wastage, BlueOak Resources. USA announced in July 2014 that they had selected Tetronics' technology for their national project ...

Recovery of Precious Metal Catalysts - A New Process Using Supercritical Water Oxidation

by Johnson Matthey Emission Control Technologies  (Jan. 1, 2002)

Up to now, the recovery of precious metals used as catalysts in chemical processes has involved the use of incineration. Now, however, a British-Swedish joint venture has developed a process which uses supercritical water oxidation instead, which provides many economic and environmental advantages. Precious metals are used extensively in ...

WEEE – aren’t materials too precious to lose?

by UNTHA UK LTD  (Apr. 10, 2015)

Chris Oldfield, managing director of UNTHA UK, was interviewed by leading journal MRW magazine recently, on the subject of WEEE. Drawing upon his specialist industry insight he commented on the methodology used to process WEEE and the extent to which the sector needs to go ‘back to basics’ to ensure precious materials are not lost. ...

Recovery of Ruthenium and Other PGMs from Spent Petrochemical Catalysts

by Tetronics (International) Limited  (Jan. 1, 2016)

The recovery of platinum group metals from spent petrochemical catalysts has economic benefits by the protection of the supply chain of these valuable and rare metals, thereby helping to create a sustainable value chain in the petrochemical industry for catalysts. Introduction The platinum group metals (PGMs) are used extensively in catalysts for ...

Duncan recyling & refining - Precious metal recovery from spent catalysts case study

by Tetronics (International) Limited  (Mar. 16, 2016)

The Challenge Spent catalysts contain Precious Metals, specifically the Platinum Group Metals (PGMs) that are valuable as a result of their low natural abundance, unique properties as well as the complex and costly processes that are required for their extraction/refining from primary sources. Duncan Refining and Recycling's (DR2) President, ...

VSEP provides crystal clear permeate and recovers precious metals from the mining leachate at 97% recovery

by New Logic Research, Inc.  (May 31, 2007)

A unique membrane filtration system, known as V✧SEP (Vibratory Shear Enhanced Process), was developed by New Logic of Emeryville, California. The technology employs vibrational oscillation of an advanced polymeric membrane to improve the throughput and to prevent colloidal fouling of the membrane surface. This new technology provides a ...

Wastewater Metals Removal

by Integrated Engineers Inc.  (May 7, 2007)

Industrial Wastewater Treatment Success Stories Wastewater Treatment Metals Removal Ton Nerve Gas Agent Container Rinse Waters ...

Phoenix county metals case study

by Niton UK Limited  (Jul. 18, 2013)

With their order placed before the instrument was officially available, Phoenix County Metals quickly benefited from their new Thermo Scientific Niton XL2 handheld XRF analyser. The robust Niton XL2 has proven ideal for Phoenix’s application, which involves the identification of gold, silver, platinum, palladium and rhodium from waste ...

Metal ions biosorption from dilute aqueous solution

by Inderscience Publishers  (Oct. 17, 2008)

Biosorption, using non-living biomass (mostly suspended), is briefly reviewed in this paper as applied to toxic metal ions removal, with particular focus on the kinetics and engineering considerations of the process. Several diverse kinetic models were successful in fitting the experimental data. Evidence was provided that the metal biosorption ...

Materials flow of platinum group metals in Germany

by Inderscience Publishers  (Mar. 23, 2009)

Platinum group metals have become indispensable in modern industrial society and the demand for PGMs has greatly increased. An in-depth quantitative analysis of PGM applications, lifecycle structure, deficits and optimisation potential in Germany has been carried out by Umicore Precious Metals Refining and Oko-Institute. Besides detailed insights ...

Hired metals analyser ensures remediation success

by Ashtead Technology Ltd  (Aug. 21, 2012)

Cognition Land and Water Ltd, a UK based remediation specialist, has hired a portable XRF metals analyser to improve the speed of remediation work at a project in London’s Kentish Town. The project had a major impact on local residents so timescales were extremely tight but Cognition’s Charlie Jarvis says “It would not have been ...

Platinum group metal recovery from spent catalysts case study

by Tetronics (International) Limited  (Mar. 16, 2016)

The Challenge Catalyst wastes, including automotive catalytic converters and industrial catalysts, contain Precious Metals and specifically Platinum Group Metals (PGMs), which are valuable as a result of their low natural abundance, unique properties as well as the complex and costly processes that are required for their extraction and refining ...

Rare Earth Metals: The Electrical Industry`s Newest `Issue`

by Connexion  (Jun. 9, 2011)

It seems that every year there’s a supply / demand issue our industry is faced with. Last year was the infamous ...

Spatial and temporal variations in the transport and storage of trace metal contaminants in the upper Rio Pilcomayo, southern Bolivia

by Inderscience Publishers  (Dec. 11, 2009)

Mining of the Cerro Rico de Potosi precious metal-polymetallic tin deposits of Bolivia began in 1545 and has led to severe contamination of water and sediments of the upper Rio Pilcomayo drainage system. Detailed geomorphological, stratigraphic and geochemical analyses show that the downstream transport and deposition of sediment-borne trace ...

Advanced Threeway Catalysts

by Johnson Matthey Emission Control Technologies  (Nov. 8, 2005)

One area of catalyst system design which has received relatively little attention is the method of application of precious metal, specifically with regard to its positioning in the catalyst. Recent advances in catalyst coating technology have enabled both washcoat and precious metals to be distributed inhomogeneously (zoned) along the length of a ...

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