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Gaseous waste refers to the gas remaining in gas cylinders and aerosol cans at the end of its use. It includes specialty gases such as those that would be used by the research laboratories as well as for gas stoves, heaters, camping gas etc. Examples include: HCl, NH3, acetylene, powder extinguisher, N2, Cl2, etc. Gas waste cannot be disposed in any other way than being destroyed, e.g. by thermal means or chemical reaction.
The empty cylinders are normally reused, but if they are damaged and cannot be reused, the cylinders becomes scrap metal. Empty aerosol cans are also recyclable (see GW53 – Metals).
Data on this waste stream is not reported in literature.
The data reported is an estimated by the SA Compressed Gases Association as well as actual data from a thermal treatment plant.
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