Removal of Hydrophobic Volatile Organic Compounds in an Integrated Process Coupling Absorption and Biodegradation – Selection of an Organic Liquid Phase
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چکیده
23 Since usual processes involve water as absorbent, they appear not always really efficient for the treatment of 24 hydrophobic VOC. Recently, absorption and biodegradation coupling in a two-phase partitioning bioreactor (TPPB) 25 proved to be a promising technology for hydrophobic compound treatment. The choice of the organic phase, the non26 aqueous phase liquid (NAPL) is based on various parameters involved in both steps of the process, hydrophobic VOC 27 absorption in a gas-liquid contactor, and biodegradation in the TPPB. VOC solubility and diffusivity in the selected 28 NAPL, as well as NAPL viscosity, seems to be the main parameters during the absorption step, while biocompatibility, 29 namely the absence of toxic effect of the NAPL towards microorganisms, non-biodegradability and VOC partition 30 coefficient between NAPL and water were revealed as the key factors during the biodegradation step. The screening 31 of the various NAPL available in the literature highlighted two families of compounds matching the required 32 conditions for the proposed integrated process, silicone oils and ionic liquids. 33
منابع مشابه
Removal of hydrophobic Volatile Organic Compounds
23 Since usual processes involve water as absorbent, they appear not always really efficient for the treatment of 24 hydrophobic VOC. Recently, absorption and biodegradation coupling in a two-phase partitioning bioreactor (TPPB) 25 proved to be a promising technology for hydrophobic compound treatment. The choice of the organic phase, the non26 aqueous phase liquid (NAPL) is based on various pa...
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تاریخ انتشار 2017