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Dual Roles of Soils on Landfill Leachate Treatment and Their Soils Carbon Sequestration |
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| รหัสดีโอไอ | |
| Creator | 1. Orrathai Chueawong 2. Paiboon Prabuddham 3. Onanong Phewnil |
| Title | Dual Roles of Soils on Landfill Leachate Treatment and Their Soils Carbon Sequestration |
| Publisher | Thai Society of Higher Education Institutes on Environment |
| Publication Year | 2562 |
| Journal Title | EnvironmentAsia |
| Journal Vol. | 12 |
| Journal No. | 3 |
| Page no. | 23-31 |
| Keyword | Landfill Leachate Treatment, Carbon Sequestration, Soil Organic Carbon Transformation |
| URL Website | http://www.tshe.org/ea/index.html |
| Website title | EnvironmentAsia |
| ISSN | 1906-1714 |
| Abstract | This study aims to verify the hypothesis on the dual roles of soils on landfill leachate (LFL) treatment and their soil carbon sequestration (SCS), blank subtraction technique in a plastic bottle model experiment that had been carried out. Four soils, a Tropaquept soil (S1) and 3 artificial soils obtained by 25, 50 and 75% sand dilution to be S2, S3 and S4, respectively. The LFL and water in two sets of the 4 saturated with the two liquids; separately, were investigated into 4 replicated at 1, 2, 4, 8 and 16 weeks of prolonged aging periods. The ranges of the soil active Fe(III) and the LFL loads studied were 5,200-1,300 ppmFe and 192.0-76.8 ppmC, respectively. The important discoveries were that the (a) Complete treatment of the LFL-C applied in all soils were obtained since 4 weeks, (b) Transformation of the CO2-C liberated to carbonate salts, evidenced by strong effervescence during soil Fe(II)-Fe extraction by 1 N HCl were observed and the (c) Transformation of the LFL-C to the less decomposable soil organic carbon, as indicated by positive relationship between the remaining Untreated Carbon (UT-C) and Fe(II)-Fe remained and the decrease of CO2-C liberation in treated LFL-C soils. The application of this dual roles on the LFL management should be a sound global warming mitigation recommendation. |
