| Autor: |
Jin-Kyu Park, Won-Jae Lee, Jong-Ki Ban, Eun-Cheol Kim, Nam-Hoon Lee |
| Předmět: |
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| Zdroj: |
Environmental Engineering Research; 2015, Vol. 20 Issue 2, p191-197, 7p |
| Abstrakt: |
The first objective of this study was to discuss the applicability of the CO2/CH4 ratio method in order to assess CH4 oxidation efficiency. To achieve this objective, a comparison between CO2/CH4 ratios and the mass balance method was conducted. The second objective of this study was to estimate the CH4 oxidation efficiency in an interim landfill soil cover and assess how a CH4 influx influences the CH4 oxidation efficiency. The results showed that despite the CO2 problems brought by respiration, the CH4 oxidation efficiencies obtained by the CO2/CH4 ratio method led to similar results compared to the mass balance method. In this respect, the CO2/CH4 ratio method can be an indicator of the CH4 oxidation efficiencies for landfill cover soils. The CH4 oxidation efficiencies derived in this study through the CO2/CH4 ratio method ranged between 46% and 64%, and between 41% and 62% through the mass balance method. The results imply that the Intergovernmental Panel on Climate Change's (IPCC) default value of 10% for the CH4 oxidation efficiency is an underestimation for landfill cover soils. CH4 oxidation efficiency tends to be negatively correlated with CH4 influx. Therefore, CH4 influx reaching a landfill cover should be limited in order to increase the CH4 oxidation efficiency. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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