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Evaluating fugacity models for trace components in landfill gas.

Shafi, Sophie and Sweetman, Andrew and Hough, Rupert L. and Smith, Richard and Rosevear, Alan and Pollard, Simon J. T. (2006) Evaluating fugacity models for trace components in landfill gas. Environmental Pollution, 144 (3). pp. 1013-1023. ISSN 0269-7491

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Abstract

A fugacity approach was evaluated to reconcile loadings of vinyl chloride (chloroethene), benzene, 1,3-butadiene and trichloroethylene in waste with concentrations observed in landfill gas monitoring studies. An evaluative environment derived from fictitious but realistic properties such as volume, composition, and temperature, constructed with data from the Brogborough landfill (UK) test cells was used to test a fugacity approach to generating the source term for use in landfill gas risk assessment models (e.g. GasSim). SOILVE, a dynamic Level II model adapted here for landfills, showed greatest utility for benzene and 1,3-butadiene, modelled under anaerobic conditions over a 10 year simulation. Modelled concentrations of these components (95 300 μg m−3; 43 μg m−3) fell within measured ranges observed in gas from landfills (24 300–180 000 μg m−3; 20–70 μg m−3). This study highlights the need (i) for representative and time-referenced biotransformation data; (ii) to evaluate the partitioning characteristics of organic matter within waste systems and (iii) for a better understanding of the role that gas extraction rate (flux) plays in producing trace component concentrations in landfill gas. Fugacity for trace component in landfill gas.

Item Type: Article
Journal or Publication Title: Environmental Pollution
Uncontrolled Keywords: Landfill gas ; Risk assessment ; Fugacity ; Emissions modelling
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 9112
Deposited By: Ms Margaret Calder
Deposited On: 27 May 2008 11:54
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 18:32
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/9112

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