Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Emission of Carbon Dioxide and Methane from Duckweed Ponds for Stormwater Treatment
This study determined the greenhouse gas emission from two laboratory‐scale duckweed ponds for stormwater treatment. The rate of carbon dioxide (CO2) emission from the two duckweed systems was 1472 ± 721 mg/m2·d and 626 ± 234 mg/m2·d, respectively. After the removal of duckweeds, CO2 emissions decreased to 492 ± 281 mg/m2·d and 395 ± 53 mg/m2·d, respectively. The higher CO2 emissions in the duckweed systems were attributed to duckweed biomass decay on the pond soil surface. A thin‐film model was able to predict the increasing CO2 concentrations in the closed static chamber during 2 weeks of sampling. The initial methane fluxes from the duckweed systems were 299 ± 74 mg/m2·d and 180 ± 91 mg/m2·d, respectively. After the removal of duckweeds, the flux increased to 559 ± 215 mg/m2·d and 328 ± 114 mg/m2·d, respectively.
Emission of Carbon Dioxide and Methane from Duckweed Ponds for Stormwater Treatment
This study determined the greenhouse gas emission from two laboratory‐scale duckweed ponds for stormwater treatment. The rate of carbon dioxide (CO2) emission from the two duckweed systems was 1472 ± 721 mg/m2·d and 626 ± 234 mg/m2·d, respectively. After the removal of duckweeds, CO2 emissions decreased to 492 ± 281 mg/m2·d and 395 ± 53 mg/m2·d, respectively. The higher CO2 emissions in the duckweed systems were attributed to duckweed biomass decay on the pond soil surface. A thin‐film model was able to predict the increasing CO2 concentrations in the closed static chamber during 2 weeks of sampling. The initial methane fluxes from the duckweed systems were 299 ± 74 mg/m2·d and 180 ± 91 mg/m2·d, respectively. After the removal of duckweeds, the flux increased to 559 ± 215 mg/m2·d and 328 ± 114 mg/m2·d, respectively.
Emission of Carbon Dioxide and Methane from Duckweed Ponds for Stormwater Treatment
Dai, Jingjing (Autor:in) / Zhang, Chiqian (Autor:in) / Lin, Chung‐Ho (Autor:in) / Hu, Zhiqiang (Autor:in)
Water Environment Research ; 87 ; 805-812
01.09.2015
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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