The Magnitude and Spatial Distribution of In-Use Zinc Stocks in Cape Town, South Africa by D. van Beers and T.E. Graedel (2004)

The Magnitude and Spatial Distribution of In-Use Zinc Stocks in Cape Town, South Africa

Title

The Magnitude and Spatial Distribution of In-Use Zinc Stocks in Cape Town, South Africa

Author(s)

D. Van Beers

Thomas E. Graedel

Year

2004

Type

Journal Article

Source

AJEAM-RAGEE, Volume 9, Issue 1, Pages 18-36

Abstract

Cape Town is a major urban area that possesses large reservoirs of in-use zinc. These reservoirs will gradually become available for re-use as the zinc-containing products become obsolete, should re-use prove technologically and economically feasible. Hence, we have identified and quantified the principal zinc uses in Cape Town and estimated their lifetime, using a model incorporating Geographic Information System (GIS) software. We estimated the in-use stock at approximately 57 Gg and predicted end-of-life flows for several decades into the future. By 2030, we anticipate an in-use zinc stock more than twice as high as currently present. Our GIS analysis demonstrated that although the per capita stock of in-use zinc is lowest for poor community areas, these areas have higher spatial densities of zinc than wealthy areas because of the very high housing and population densities. If all end-of-life zinc is reprocessed, rather than discarded as waste or transferred outside the region, it could supply up to 50% of Cape Town's zinc demand over the next three decades.

More Information

https://www.researchgate.net/publication/266142508_The_Magnitude_and_Spatial_Distribution_of_In-use_Zinc_Stocks_in_Cape_Town_South_Africa

The Magnitude and Spatial Distribution of In-Use Zinc Stocks in Cape Town, South Africa

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