scholarly journals Platinum Group Metals: A Review of Resources, Production and Usage with a Focus on Catalysts

Resources ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 93
Author(s):  
Anthony E. Hughes ◽  
Nawshad Haque ◽  
Stephen A. Northey ◽  
Sarbjit Giddey
Keyword(s):  
Automotive Industry ◽  
Catalyst Design ◽  
Platinum Group Metals ◽  
Chemical Production ◽  
Energy Technologies ◽  
The Us ◽  
Design Recovery ◽  
Emission Regulation ◽  
Annual Primary Production

The major applications of PGMs are as catalysts in automotive industry, petroleum refining, environmental (gas remediation), industrial chemical production (e.g., ammonia production, fine chemicals), electronics, and medical fields. As the next generation energy technologies for hydrogen production, such as electrolysers and fuel cells for stationary and transport applications, become mature, the demand for PGMs is expected to further increase. Reserves and annual production of Ru, Rh, Pd, Ir, and Pt have been determined and reported. Based on currently available resources, there is around 200 years lifetime based on current demand for all PGMs, apart from Pd, which may be closer to 100 years. Annual primary production of 190 t/a for Pt and 217 t/a for Pd, in combination with recycling of 65.4 t/a for Pt and 97.2 t/a for Pd, satisfies current demand. By far, the largest demand for PGMs is for all forms of catalysis, with the largest demand in auto catalysis. In fact, the biggest driver of demand and price for Pt, Pd, and Rh, in particular, is auto emission regulation, which has driven auto-catalyst design. Recovery of PGMs through recycling is generally good, but some catalytic processes, particularly auto-catalysis, result in significant dissipation. In the US, about 70% of the recycling stream from the end-of-life vehicles is a significant source of global secondary PGMs recovered from spent auto-catalyst. The significant use of PGMs in the large global auto industry is likely to continue, but the long-term transition towards electric vehicles will alter demand profiles.

Waste to Energy in the 21st Century: Getting New Projects/Expansions off the Ground — Key Ingredients to a Successful Action Plan (Abstract)

2005 ◽  
Author(s):  
Shawn Worster
Keyword(s):  
21St Century ◽  
Solid Waste Management ◽  
Action Plan ◽  
Management Program ◽  
Waste To Energy ◽  
Integrated Solid Waste Management ◽  
Energy Technologies ◽  
Contractual Relationships ◽  
The Us

These are critical times for users and vendors of waste-to energy technologies in the US. Many of the existing long term contracts entered into during the early to mid 80’s are nearing their end. Communities are facing the need to decide what to do with that portion of their waste stream remaining after they reduce, reuse and recycle. That effort includes determining the role that waste-to-energy will play in their 21st Century integrated solid waste management program and the nature of the contractual relationships that will define how it is managed.

There Is Light at the End of the Tunnel! Key Ingredients to a Successful End of Term Action Plan

2008 ◽  
Author(s):  
Shawn Worster ◽  
Alan Cohen ◽  
Susan Raila
Keyword(s):  
Solid Waste ◽  
Action Plan ◽  
Waste To Energy ◽  
Factors Affecting ◽  
Energy Technologies ◽  
North East ◽  
The Us ◽  
The Status ◽  
Privately Owned

These are critical times for customers, operators, and owners of waste-to-energy technologies in the US. Many of the existing long term contracts entered into during the early to mid 80’s are at or nearing their end. Communities are facing the need to decide what to do with that portion of their waste stream remaining after they reduce, reuse, and recycle. This presentation addresses the status of several waste-to-energy facilities (e.g. North East Solid Waste Committee (NESWC), Bridgeport, Pinellas, Hempstead) projects that have reached, or are nearing, the end of their initial terms, comparing and contrasting the issues between publicly and privately owned facilities. The presentation draws on the authors’ direct involvement in these projects — in some cases from the project’s inception to the present. Drawing on their collective seventy+ years of experience in the solid waste industry representing public sector clients, Dr. Cohen, Ms. Raila and Mr. Worster will present an overview of the factors affecting existing contracts reaching end of term, key elements to be considered by participants in identifying what their options are, typical terms and conditions and key ingredients of and how to put in place an effective action plan.

Moving past the vaccine/autism controversy - to examine potential vaccine neurological harms

2020 ◽  
pp. 1-15
Author(s):  
Peter R. Breggin
Keyword(s):  
Neurological Disorders ◽  
Developmental Disorder ◽  
Physical Symptoms ◽  
Psychosocial Disorders ◽  
The Us ◽  
Potential Vaccine ◽  
Research And Education ◽  
The Brain ◽  
New Vaccines

BACKGROUND: The vaccine/autism controversy has caused vast scientific and public confusion, and it has set back research and education into genuine vaccine-induced neurological disorders. The great strawman of autism has been so emphasized by the vaccine industry that it, and it alone, often appears in authoritative discussions of adverse effects of the MMR and other vaccines. By dismissing the chimerical vaccine/autism controversy, vaccine defenders often dismiss all genuinely neurological aftereffects of the MMR (measles, mumps, and rubella) and other vaccines, including well-documented events, such as relatively rare cases of encephalopathy and encephalitis. OBJECTIVE: This report explains that autism is not a physical or neurological disorder. It is not caused by injury or disease of the brain. It is a developmental disorder that has no physical origins and no physical symptoms. It is extremely unlikely that vaccines are causing autism; but it is extremely likely that they are causing more neurological damage than currently appreciated, some of it resulting in psychosocial disabilities that can be confused with autism and other psychosocial disorders. This confusion between a developmental, psychosocial disorder and a physical neurological disease has played into the hands of interest groups who want to deny that vaccines have any neurological and associated neuropsychiatric effects. METHODS: A review of the scientific literature, textbooks, and related media commentary is integrated with basic clinical knowledge. RESULTS: This report shows how scientific sources have used the vaccine/autism controversy to avoid dealing with genuine neurological risks associated with vaccines and summarizes evidence that vaccines, including the MMR, can cause serious neurological disorders. Manufacturers have been allowed by the US Food and Drug Administration (FDA) to gain vaccine approval without placebo-controlled clinical trials. CONCLUSIONS: The misleading vaccine autism controversy must be set aside in favor of examining actual neurological harms associated with vaccines, including building on existing research that has been ignored. Manufacturers of vaccines must be required to conduct placebo-controlled clinical studies for existing vaccines and for government approval of new vaccines. Many probable or confirmed neurological adverse events occur within a few days or weeks after immunization and could be detected if the trials were sufficiently large. Contrary to current opinion, large, long-term placebo-controlled trials of existing and new vaccines would be relatively easy and safe to conduct.

Sanctions of the USA and the Policy of Bank of Russia:double Blow to the National Economy

2014 ◽  
pp. 13-29 ◽  
Author(s):  
S. Glazyev
Keyword(s):  
National Security ◽  
Economic Sanctions ◽  
Capital Flight ◽  
Practical Advice ◽  
The Us ◽  
Monetary Authorities ◽  
The Usa ◽  
Simultaneous Adoption ◽  
The Eu

This article examines fundamental questions of monetary policy in the context of challenges to the national security of Russia in connection with the imposition of economic sanctions by the US and the EU. It is proved that the policy of the Russian monetary authorities, particularly the Central Bank, artificially limiting the money supply in the domestic market and pandering to the export of capital, compounds the effects of economic sanctions and plunges the economy into depression. The article presents practical advice on the transition from external to domestic sources of long-term credit with the simultaneous adoption of measures to prevent capital flight.

Endurance of Transnationalism in Bolivia’s Valle Alto

2006 ◽  
Vol 3 (1) ◽  
pp. 63-74 ◽  
Author(s):  
Richard C. Jones ◽  
Leonardo De la Torre
Keyword(s):  
Random Sample ◽  
Work Experience ◽  
Household Income ◽  
Return Migration ◽  
Ethnographic Interviews ◽  
The Us ◽  
Foreign Work ◽  
Intentions To Return ◽  
Economic Ties

The increasing difficulty of return migration and the demands for assimilation into host societies suggest a long-term cutting of ties to origin areas—likely accentuated in the Bolivian case by the recent shift in destinations from Argentina to the US and Spain. Making use of a stratified random sample of 417 families as well as ethnographic interviews in the provinces of Punata, Esteban Arze, and Jordán in the Valle Alto region the authors investigate these issues. Results suggest that for families with greater than ten years cumulated foreign work experience, there are significantly more absentees and lower levels of remittances as a percentage of household income. Although cultural ties remain strong after ten years, intentions to return to Bolivia decline markedly. The question of whether the dimunition of economic ties results in long-term village decline in the Valle Alto remains an unanswered.   

Study of Natural Minerals of U-Ryrochlore-Type Structure as Analogues of Plutonium Ceramic Waste-form

2002 ◽  
Vol 713 ◽  
Author(s):  
Roman V. Bogdanov ◽  
Yuri F. Batrakov ◽  
Elena V. Puchkova ◽  
Andrey S. Sergeev ◽  
Boris E. Burakov
Keyword(s):  
Chemical Shifts ◽  
Pyrochlore Structure ◽  
Type Structure ◽  
Waste Form ◽  
X Ray ◽  
Ceramic Waste ◽  
Natural Minerals ◽  
The Us ◽  
Pyrochlore Type

ABSTRACTAt present, crystalline ceramic based on titanate pyrochlore, (Ca,Gd,Hf,Pu,U)2Ti2O7, is considered as the US candidate waste form for the immobilization of weapons grade plutonium. Naturally occuring U-bearing minerals with pyrochlore-type structure: hatchettolite, betafite, and ellsworthite, were studied in orders to understand long-term radiation damage effects in Pu ceramic waste forms. Chemical shifts (δ) of U(Lδ1)– and U(Lβ1) – X-ray emission lines were measured by X-ray spectrometry. Calculations were performed on the basis of a two-dimensional δLá1- and δLδ1- correlation diagram. It was shown that 100% of uranium in hatchettolite and, probably, 95-100% of uranium in betafite are in the form of (UO2)2+. formal calculation shows that in ellsworthite only 20% of uranium is in the form of U4+ and 80% of the rest is in the forms of U5+ and U6+. The conversion of the initial U4+ ion originally occurring in the pyrochlore structure of natural minerals to (UO2)2+ due to metamict decay causes a significant increase in uranium mobility.

Sign in / Sign up

Export Citation Format

Share Document