Methane emission from lakes
| Autor: | G.A. Makhov, N.M. Bazhin |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Environmental Engineering
Health Toxicology and Mutagenesis Bubble Diffusion Analytical chemistry Fresh Water Methane Atmosphere chemistry.chemical_compound Flux (metallurgy) Environmental Chemistry Chemistry Public Health Environmental and Occupational Health Environmental engineering General Medicine General Chemistry Carbon Dioxide Plants Pollution Oxygen Models Chemical Anaerobic oxidation of methane Carbon dioxide Oxidation-Reduction Algorithms Intensity (heat transfer) |
| Zdroj: | Chemosphere. 38:1453-1459 |
| ISSN: | 0045-6535 |
| DOI: | 10.1016/s0045-6535(98)00547-5 |
| Popis: | A physico-chemical model to describe methane and carbon dioxide emission from lakes was developed. The model describes the emission by diffusion, bubbles and plants. The intensity of the fluxes can be calculated either for total or particular emission in dependence on gas bubbles composition. It was found, that diffusional (Q) and bubble (J) fluxes depend on the methane molar ratio (X) in bubbles as follows: Q ( CH 4 ) ∽ X ; Q ( CO 2 ) ∽ X (1 − X ) Q ( N 2 ) ∽ (1 − X ) J ( CH 4 ) ∽ X 2 (I − X ) J ( CO 2 ) ∽ X 2 (l − X ) 2 J ( N 2 ) ∽ X . The model allows to estimate the role of the methane oxidation by atmospheric oxygen in the total methane flux. It was shown, that the methane oxidation does not influence much methane fluxes to the atmosphere for most of the experimentally observed situations. |
| Databáze: | OpenAIRE |
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