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題名 | 未飽和土壤層揮發性有機污染質之微生物耗氧分解及揮發速率的分析與評估=Simulation of Aerobic Biodegradation and Volatilization of Volatile Organic Compound in Unsaturated Soils |
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作者姓名(中文) | 馮秋霞; | 書刊名 | 中國土木水利工程學刊 |
卷期 | 15:3 2003.09[民92.09] |
頁次 | 頁545-555 |
分類號 | 445.6 |
關鍵詞 | 揮發性有機污染質; 揮發; 微生物耗氧分解; 未飽和土壤層; Volatile organic compound; Aerobic biodegradation; Volatilization; Unsaturated soils; |
語文 | 中文(Chinese) |
中文摘要 | 本研究修改一維氣相傳輸模式,1DMVFT,以分析揮發性有機污染質 (VOCs)之殘餘相及地下水溶解團於未飽和土壤層的穩態傳輸與微生物降解反應,1DMVFT模式包括兩種氣體擴散式:Fick's law及Dusty Gas Model。研究的結果顯示:不同擴散式所分析的土壤氣體分布曲線、VOC揮發及微生物耗氧分解速率在不同的土壤含水率情況下呈現不同程度的差異;而以不同的實測土壤氣體濃度 (VOC、二氧化碳或氧) 分布和╱或氣體流通量為依據推估VOC之分解速率參數值,將可能得到不同的推估結果。 |
英文摘要 | An one-dimensional multicomponent vapor transport model, 1DMVFT, was developed to simulate steady-state vapor transport and biodegradation of volatile organic compounds (VOCs) in unsaturated soils. Two different diffusion approaches, which are Fick's law and the Dusty Gas Model (DGM), are employed in the 1DMVFT model. Results show that soil gas distribution, rates of aerobic biodegradation and volatilization predicted by the Fick's approach is inconsistent with the DGM result. Besides, estimations of these rate parameters based on different in-situ soil gas distribution data, i.e., VOCs, CO2 or O2, and/or gas flux may obtain different results. |
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