The report Metal Stocks in Society: Scientific Synthesis[1] was the first of six scientific assessments on global metals to be published by the International Resource Panel (IRP) of the United Nations Environment Programme. The IRP provides independent scientific assessments and expert advice on a variety of areas, including:
the volume of selected raw material reserves and how efficiently these resources are being used
the lifecycle-long environmental impacts of products and services created and consumed around the globe
options to meet human and economic needs with fewer or cleaner resources.
Metals were an early priority for the International Resource Panel, since little was known about them, their impacts, their economic importance or their scarcity. The report aimed to calculate the amount of metals present in society and assess the potential for utilising in-use stock to offset demand from virgin metal. Knowing how much metal stock there is in use, and how long the lifespan of the metal is, can help planners know when these metal stocks will enter recycling or waste streams. It suggested that these 'mines above ground' had growing potential for future metals supply; the authors found that there is about 50 kg of above-ground copper for every person on earth, and more than two tons of iron per capita.[2] However, they noted that enormous disparities in global metals stocks existed between developed and developing nations including Brazil, China and India.[3]
Calculating ‘anthropogenic stocks’ of metals already in use in society is a precursor to stimulating efforts to increase recycling. The authors reported that very little information is presently known about different metals, making it difficult for policy makers to develop and plan recycling systems. However, what is known is that recycling can not only reduce negative impacts on the environment but also save energy. For example, 95% of the energy used to make aluminium from bauxite ore is saved by using recycled material.[4]
The authors quantified per capita stocks of the following metals, for some countries (stocks were mostly quantified for developed countries but data was also available for some developing nations).
Some primary stocks of rare but useful metals are already running low. For example, rhenium only occurs at seven parts per billion in the Earth’s crust, making it one of the rarest elements on the planet. However, its high melting point of 3,186 °C makes it valuable in the manufacture of jet engines. Demand for the metal is rising, with increasing air travel, but its rarity means increasing extraction is not simple. This is where recycling comes in; rhenium is one of the few metals that has witnessed a rise in recycling rates. It is likely that recycling will become a more viable option than extraction for other metals in future, saving energy, cutting greenhouse gases emitted to the atmosphere and reducing negative impacts on the environment.[5]
^UN panel sees future shortage of specialty metals Patrick Worsnip, Reuters, 13 May 2010.
^UN report highlights disparities in global metal stocks, Metal Bulletin, 19 May 2010
^Aluminium’s rubbish recycling rate, Carolyn Fry, Tread Lightly, The Guardian, 22 February 2008
^Babbage: Rare metals, Recycling ‘’The Economist’’ 29 May 2011
External linksedit
www.resourcepanel.org
www.unep.org
December 15, 2023
metal, stocks, society, report, report, metal, stocks, society, scientific, synthesis, first, scientific, assessments, global, metals, published, international, resource, panel, united, nations, environment, programme, provides, independent, scientific, assess. The report Metal Stocks in Society Scientific Synthesis 1 was the first of six scientific assessments on global metals to be published by the International Resource Panel IRP of the United Nations Environment Programme The IRP provides independent scientific assessments and expert advice on a variety of areas including the volume of selected raw material reserves and how efficiently these resources are being used the lifecycle long environmental impacts of products and services created and consumed around the globe options to meet human and economic needs with fewer or cleaner resources Metal Stocks in Society Scientific SynthesisTypeIndependent scientific assessmentPublicationMay 2010 International Resource PanelWebsitewww resourcepanel org Contents 1 About the report 2 Reasons for recycling 3 References 4 External linksAbout the report editMetals were an early priority for the International Resource Panel since little was known about them their impacts their economic importance or their scarcity The report aimed to calculate the amount of metals present in society and assess the potential for utilising in use stock to offset demand from virgin metal Knowing how much metal stock there is in use and how long the lifespan of the metal is can help planners know when these metal stocks will enter recycling or waste streams It suggested that these mines above ground had growing potential for future metals supply the authors found that there is about 50 kg of above ground copper for every person on earth and more than two tons of iron per capita 2 However they noted that enormous disparities in global metals stocks existed between developed and developing nations including Brazil China and India 3 Calculating anthropogenic stocks of metals already in use in society is a precursor to stimulating efforts to increase recycling The authors reported that very little information is presently known about different metals making it difficult for policy makers to develop and plan recycling systems However what is known is that recycling can not only reduce negative impacts on the environment but also save energy For example 95 of the energy used to make aluminium from bauxite ore is saved by using recycled material 4 The authors quantified per capita stocks of the following metals for some countries stocks were mostly quantified for developed countries but data was also available for some developing nations Major engineering metals aluminium copper iron lead steel stainless steel zinc Precious metals gold palladium platinum rhodium silver Specialty metals antimony cadmium chromium cobalt magnesium manganese mercury molybdenum nickel tin titanium tungstenExtant in use metal stock estimations for the major engineering metals Metal Number of estimates Percentage of all estimates Global per capita stock kg MDC per capita stock LDC per capita stockAluminium 9 7 4 80 350 500 35Copper 34 27 0 35 55 140 300 30 40Iron 13 10 7 2200 7000 14000 2000Lead 20 16 4 8 20 150 1 4Steel 0 8 7085Stainless steel 5 4 1 80 180 15Zinc 14 11 5 n a 80 200 20 40Reasons for recycling editSome primary stocks of rare but useful metals are already running low For example rhenium only occurs at seven parts per billion in the Earth s crust making it one of the rarest elements on the planet However its high melting point of 3 186 C makes it valuable in the manufacture of jet engines Demand for the metal is rising with increasing air travel but its rarity means increasing extraction is not simple This is where recycling comes in rhenium is one of the few metals that has witnessed a rise in recycling rates It is likely that recycling will become a more viable option than extraction for other metals in future saving energy cutting greenhouse gases emitted to the atmosphere and reducing negative impacts on the environment 5 References edit Metal Stocks in Society Scientific synthesis 2010 International Resource Panel UNEP UN panel sees future shortage of specialty metals Patrick Worsnip Reuters 13 May 2010 UN report highlights disparities in global metal stocks Metal Bulletin 19 May 2010 Aluminium s rubbish recycling rate Carolyn Fry Tread Lightly The Guardian 22 February 2008 Babbage Rare metals Recycling The Economist 29 May 2011External links editwww resourcepanel org www unep org Retrieved from https en wikipedia org w index php title Metal Stocks in Society report amp oldid 1032104414, wikipedia, wiki, book, books, library,
