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dc.contributor.authorSweetapple, Christine
dc.contributor.authorFu, Guangtao
dc.contributor.authorButler, David
dc.date.accessioned2014-05-07T14:26:26Z
dc.date.issued2013
dc.description.abstractThis study investigates sources of uncertainty in the modelling of greenhouse gas emissions from wastewater treatment, through the use of local and global sensitivity analysis tools, and contributes to an in-depth understanding of wastewater treatment modelling by revealing critical parameters and parameter interactions. One-factor-at-a-time sensitivity analysis is used to screen model parameters and identify those with significant individual effects on three performance indicators: total greenhouse gas emissions, effluent quality and operational cost. Sobol's method enables identification of parameters with significant higher order effects and of particular parameter pairs to which model outputs are sensitive. Use of a variance-based global sensitivity analysis tool to investigate parameter interactions enables identification of important parameters not revealed in one-factor-at-a-time sensitivity analysis. These interaction effects have not been considered in previous studies and thus provide a better understanding wastewater treatment plant model characterisation. It was found that uncertainty in modelled nitrous oxide emissions is the primary contributor to uncertainty in total greenhouse gas emissions, due largely to the interaction effects of three nitrogen conversion modelling parameters. The higher order effects of these parameters are also shown to be a key source of uncertainty in effluent quality.en_GB
dc.identifier.citationVol. 47 (13), pp. 4652 - 4665en_GB
dc.identifier.doi10.1016/j.watres.2013.05.021
dc.identifier.urihttp://hdl.handle.net/10871/14842
dc.language.isoenen_GB
dc.publisherElsevieren_GB
dc.relation.urlhttp://dx.doi.org/10.1016/j.watres.2013.05.021en_GB
dc.subjectBenchmark modelen_GB
dc.subjectGreenhouse gasen_GB
dc.subjectModel identificationen_GB
dc.subjectSensitivityen_GB
dc.subjectUncertaintyen_GB
dc.subjectWastewater treatmenten_GB
dc.subjectAir Pollutantsen_GB
dc.subjectGasesen_GB
dc.subjectGreenhouse Effecten_GB
dc.subjectKineticsen_GB
dc.subjectModels, Theoreticalen_GB
dc.subjectNitrogenen_GB
dc.subjectNitrous Oxideen_GB
dc.subjectUncertaintyen_GB
dc.subjectWaste Wateren_GB
dc.subjectWater Purificationen_GB
dc.titleIdentifying key sources of uncertainty in the modelling of greenhouse gas emissions from wastewater treatmenten_GB
dc.typeArticleen_GB
dc.date.available2014-05-07T14:26:26Z
dc.identifier.issn0043-1354
exeter.place-of-publicationEngland
dc.descriptionCopyright © 2013 Elsevier. NOTICE: this is the author’s version of a work that was accepted for publication in Water Research. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Water Research Vol. 47 (2013), DOI: 10.1016/j.watres.2013.05.021en_GB
dc.identifier.eissn1879-2448
dc.identifier.journalWater Researchen_GB


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