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© 2016 Elsevier Ltd. Waste stabilisation ponds (WSPs) are highly enriched environments that may emit large quantities of greenhouse gases (GHG), including CO2, CH4 and N2O. However, few studies provide detailed reports on these emissions. In the present study, we investigated GHG emissions from WSPs in Western Australia and Quebec, Canada, and compared emissions to WSPs from other climatic regions and to other types of aquatic ecosystems. Surface water GHG concentrations were related to phytoplankton biomass and nutrients. The CO2 was either emitted or absorbed by WSPs, largely as a function of phytoplankton dynamics and strong stratification in these shallow systems, whereas efflux of CH4 and N2O to the atmosphere was always observed albeit with highly variable emission rates, dependent on treatment phase and time of the day. The total global warming potential index (GWP index, calculated as CO2 equivalent) of emitted GHG from WSPs in Western Australia averaged 12.8 mmol m-2 d-1 (median), with CO2, CH4 and N2O respectively contributing 0%, 96.7% and 3.3% of the total emissions, while in Quebec WSPs this index was 194 mmol m-2 d-1, with a relative contribution of 93.8, 3.0 and 3.2% respectively. The CO2 fluxes from WSPs were of the same order of magnitude as those reported in hydroelectric reservoirs and constructed wetlands in tropical climates, whereas CH4 fluxes were considerably higher compared to other aquatic ecosystems. N2O fluxes were in the same range of values reported for WSPs in subtropical climate.
|Number of pages||11|
|Early online date||21 May 2016|
|Publication status||Published - 15 Sept 2016|
FingerprintDive into the research topics of 'Greenhouse gas emissions from waste stabilisation ponds in Western Australia and Quebec (Canada)'. Together they form a unique fingerprint.
- 2 Finished
Process Understanding of Treatment Performance of Waste Stabilisation Ponds: Controlling Factors, Novel Performance Indices, and Risk Assessment
Ghadouani, A., Ivey, G., Ghisalberti, M., Zhou, W., Laurion, I. & Chua, A.
Australian Research Council, Water Corporation WA, Water Earth Environment Research Centre INRS Quebec
1/01/13 → 31/03/17
LP0776571 Production Fate and Transport of Cyanobacterial Toxins in Waterways
Ghadouani, A., Ivey, G., Codd, G. & Havens, K.
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- 33 Citations
- 1 Article
Integrated approach towards quantifying carbon dioxide and methane release from waste stabilization pondsBartosiewicz, M., Coggins, L. X., Glaz, P., Cortés, A., Bourget, S., Reichwaldt, E. S., MacIntyre, S., Ghadouani, A. & Laurion, I., 1 Sept 2021, In: Water Research. 202, 14 p., 117389.
Research output: Contribution to journal › Article › peer-reviewOpen Access