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:
Journal Article
Journal or Publication Title:
Environmental Pollution
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2300/2310
Subjects:
?? landfill gasrisk assessmentfugacityemissions modellingpollutionhealth, toxicology and mutagenesistoxicologyge environmental sciences ??
ID Code:
9112
Deposited By:
Deposited On:
27 May 2008 10:54
Refereed?:
Yes
Published?:
Published
Last Modified:
15 Jul 2024 11:36