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Sulphate bearing waste: progress towards a concentration limit for separate disposal

Lookup NU author(s): Professor David Manning, Maggie White

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Abstract

This project aims to define a maximum permissible sulphate concentration for wastes deposited with biodegradable wastes, in order to satisfy the requirements of Paragraph 15 of Schedule 1 of the Landfill Amendment Regulations 2004. A review of the sources and users of sulphate bearing waste determined that demolition wastes and wastes from thermal treatment are now the primary future sources of sulphate wastes in landfill. The known emission of sulphur via landfill gas and leachate is only a small portion of the sulphur content of normal MSW. This suggests that the chemical form of sulphate is an important factor. Field evidence implies that mechanisms exist, possibly abiotic, that are capable of removing large quantities of hydrogen sulphide from landfill gas passing upwards through the unsaturated zone of the waste. One hypothesis is that elemental iron may be an important factor regarding the critical emission of hydrogen sulphide. However, initial experiments have shown that MSW and green waste without any elemental iron are both able to rapidly remove high concentrations of H2S within landfill gas.


Publication metadata

Author(s): Garnett E, Caine M, Bristow I, Manning DAC, White ML, Knox K, Marcouse P, Pointer P, Braithwaite P, Rosevear A

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: Proceedings of the Waste Conference

Year of Conference: 2006

URL: http://www.waste2006.com/

Library holdings: Search Newcastle University Library for this item

ISBN: 0953930135


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