Toluene Removal by Biofiltration: Influence of the Nitrogen Concentration on Operational Parameters

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• 作者：Marie-Caroline Delhomé ; nie ; Louise Bibeau ; Julie Gendron ; Ryszard Brzezinski ; and Michè ; le Heitz
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2001
• 出版时间：November 14, 2001
• 年：2001
• 卷：40
• 期：23
• 页码：5405 - 5414
• 全文大小：358K
• 年卷期：v.40,no.23(November 14, 2001)
• ISSN：1520-5045

文摘

The study presented in this paper dealt with the operation of a laboratory-scale upflow biofilter,packed with compost-based filter material. The airborne contaminant studied was toluene,maintained at a constant inlet concentration of 1.7 g·m^-3. The input air was conveyed upwardthrough the filter column at a flow rate of 1 m³·h^-1. The objective of this work was the study ofthe impact of increasing concentrations of nitrogen contained in the nutrients solution and, hence,the establishment of a new correlation between this parameter and the overall degradationperformance. Depending on the nitrogen concentration employed, two biodegradation regimeshave been identified. Over the optimal range of nitrogen concentrations [2.0-8.0 g of N·L^-1],the maximum level of elimination capacity achieved was 100 g·m^-3·h^-1. This value is in linewith theoretical considerations that suggest that an optimal nitrogen concentration of 2.6 g ofN·L^-1 is required to achieve the same performance (100 g·m^-3·h^-1).