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dc.contributor.authorLiu, Bianxiaen
dc.contributor.authorGiannis, Apostolosen
dc.contributor.authorChen, Ailuen
dc.contributor.authorZhang, Jiefengen
dc.contributor.authorWang, Jing-Yuanen
dc.contributor.authorChang, Victor Wei-Chungen
dc.identifier.citationLiu, B., Giannis, A., Chen, A., Zhang, J., Chang, V. W. C.,& Wang, J. Y. (2016). Determination of urine-derived odorous compounds in a source separation sanitation system. Journal of Environmental Sciences, in press.en
dc.description.abstractSource separation sanitation systems have attracted more and more attention recently. However, separate urine collection and treatment could induce odor issues, especially in large scale application. In order to avoid such issues, it is necessary to monitor the odor related compounds that might be generated during urine storage. This study investigated the odorous compounds that emitted from source-separated human urine under different hydrolysis conditions. Batch experiments were conducted to investigate the effect of temperature, stale/fresh urine ratio and urine dilution on odor emissions. It was found that ammonia, dimethyl disulfide, allyl methyl sulfide and 4-heptanone were the main odorous compounds generated from human urine, with headspace concentrations hundreds of times higher than their respective odor thresholds. Furthermore, the high temperature accelerated urine hydrolysis and liquid–gas mass transfer, resulting a remarkable increase of odor emissions from the urine solution. The addition of stale urine enhanced urine hydrolysis and expedited odor emissions. On the contrary, diluted urine emitted less odorous compounds ascribed to reduced concentrations of odorant precursors. In addition, this study quantified the odor emissions and revealed the constraints of urine source separation in real-world applications. To address the odor issue, several control strategies are recommended for odor mitigation or elimination from an engineering perspective.en
dc.relation.ispartofseriesJournal of Environmental Sciencesen
dc.rights© 2016 Elsevier B.V.en
dc.subjectVolatile organic compounds (VOCs)en
dc.subjectSource separationen
dc.subjectGas chromatography mass spectrometry (GC–MS)en
dc.subjectOdor emissionsen
dc.subjectUrine hydrolysisen
dc.titleDetermination of urine-derived odorous compounds in a source separation sanitation systemen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Civil and Environmental Engineeringen
dc.contributor.researchNanyang Environment and Water Research Instituteen
dc.contributor.researchResidues and Resource Reclamation Centreen
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