Analysis of landfill gas migration by use of autonomous gas monitoring platforms
Collins, Fiachra and Orpen, Dylan and Fay, Cormac and Diamond, Dermot (2012) Analysis of landfill gas migration by use of autonomous gas monitoring platforms. In: The 27th International Conference on Solid Waste Technology and Management, 10-14 Mar 2012, Philadelphia, USA.
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Autonomous gas sensing platforms have been developed to facilitate the long-term continuous monitoring of landfill gas concentrations. The analysis of a municipal landfill site in Ireland forms part of an on-going collaboration with the Environmental Protection Agency in monitoring the migration of greenhouse gases, i.e. methane and carbon dioxide, emanating from the landfill site. Target gas concentrations were automatically recorded via infrared gas sensors calibrated for the respective gases, with this data being logged remotely every six hours to a central base-station. The autonomous platform with its web-based portal interface provides a flexible alternative to the existing labor-intensive, manual monitoring routines. Frequent occurrences of 70% v/v methane and 6% v/v carbon dioxide were substantially in breach of the regulatory limits of 1.5% v/v and 1.0% v/v, respectively. These excessive levels of gas migration were analyzed with respect to SCADA flare data, on-site measurements and meteorological data.
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