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Biodegradation and flushing of MBT wastes

Biodegradation and flushing of MBT wastes
Biodegradation and flushing of MBT wastes
Mechanical–biological treatment (MBT) processes are increasingly being adopted as a means of diverting biodegradable municipal waste (BMW) from landfill, for example to comply with the EU Landfill Directive. However, there is considerable uncertainty concerning the residual pollution potential of such wastes. This paper presents the results of laboratory experiments on two different MBT waste residues, carried out to investigate the remaining potential for the generation of greenhouse gases and the flushing of contaminants from these materials when landfilled. The potential for gas generation was found to be between 8% and 20% of that for raw MSW. Pretreatment of the waste reduced the potential for the release of organic carbon, ammoniacal nitrogen, and heavy metal contents into the leachate; and reduced the residual carbon remaining in the waste after final degradation from ?320 g/kg dry matter for raw MSW to between 183 and 195 g/kg dry matter for the MBT wastes.
0956-053X
2257-2266
Siddiqui, A.A.
b26d45e6-7d79-4d7e-ad5b-83843a479070
Richards, D.J.
a58ea81e-443d-4dab-8d97-55d76a43d57e
Powrie, W.
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c
Siddiqui, A.A.
b26d45e6-7d79-4d7e-ad5b-83843a479070
Richards, D.J.
a58ea81e-443d-4dab-8d97-55d76a43d57e
Powrie, W.
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c

Siddiqui, A.A., Richards, D.J. and Powrie, W. (2013) Biodegradation and flushing of MBT wastes. Waste Management, 33 (11), 2257-2266. (doi:10.1016/j.wasman.2013.07.024).

Record type: Article

Abstract

Mechanical–biological treatment (MBT) processes are increasingly being adopted as a means of diverting biodegradable municipal waste (BMW) from landfill, for example to comply with the EU Landfill Directive. However, there is considerable uncertainty concerning the residual pollution potential of such wastes. This paper presents the results of laboratory experiments on two different MBT waste residues, carried out to investigate the remaining potential for the generation of greenhouse gases and the flushing of contaminants from these materials when landfilled. The potential for gas generation was found to be between 8% and 20% of that for raw MSW. Pretreatment of the waste reduced the potential for the release of organic carbon, ammoniacal nitrogen, and heavy metal contents into the leachate; and reduced the residual carbon remaining in the waste after final degradation from ?320 g/kg dry matter for raw MSW to between 183 and 195 g/kg dry matter for the MBT wastes.

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Published date: November 2013
Organisations: Infrastructure Group

Identifiers

Local EPrints ID: 358812
URI: https://eprints.soton.ac.uk/id/eprint/358812
ISSN: 0956-053X
PURE UUID: 385563d0-1aaa-4838-928b-bab9ec4b4fc0
ORCID for W. Powrie: ORCID iD orcid.org/0000-0002-2271-0826

Catalogue record

Date deposited: 14 Oct 2013 13:14
Last modified: 20 Jul 2019 01:19

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