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This study was performed to test ethylene glycol treatment in an impulsive plug flow type bioreactor under anaerobic conditions. The bioreactor, which was originally designed for the study, induces a rise in fluid level for 10 minutes followed by an abrupt decrease in fluid level. This change in fluid level increases mass transfer efficiency by creating strong fluid movement in the reactor. Industrial ethylene glycol was used as an artificial wastewater source in the bioreactor under anaerobic conditions. The experimental period lasted approximately 130 days. The organic removal and gas production rates decreased significantly after 6.36 days of hydraulic retention time (HRT) and 29.41 kg COD/m3-day of organic loading rate (OLR). The rates showed optimal performance after 8.17 days of HRT and 22.90 kg COD/m3-day of OLR, presenting the maximum OLR and minimum HRT. Acetic acid and ethanol were major intermediate products in anaerobic ethylene glycol degradation and produced 56% and 40% of the total COD, respectively, during overload conditions. Accumulation of acetic acid and ethanol was shown to be used as an indicator of an overload condition during the anaerobic degradation of ethylene glycol. Gas production was an excellent operating factor due to its coincidence with the theoretical prediction. In this study, the impulsive plug flow type bioreactor resulted in an efficient treatment of the ethylene glycol under anaerobic conditions, which suggests the potential for applying this method to any anaerobic organic wastewater treatment.
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참고문헌 (14)
참고문헌 신청
Veltman, S. / 1998 / Alcohol and Acid Formation during the Anaerobic Decomposition of Propylene Glycol under Methanogenic Conditions / Biodegradation 9(2):113~118
Schoenberg, T. / 2001 / Kinetics of Anaerobic Degradation of Glycol-based Type I Aircraft Deicing Fluids / Biodegradation 12(1):59~68
Trifunović, D. / 2016 / Ethylene Glycol Metabolism in the Acetogen Acetobacterium woodii / Journal of Bacteriology 198(7):1058~1062
Gaston, L. W. / 1963 / Fermentation of Ethylene Glycol by Clostridium glycolicum, SP.N / Journal of Bacteriology 85:356~362
ToxGuideTM for Ethylene Glycol / ATSDR
Schoenberg, T. / 2001 / Kinetics of Anaerobic Degradation of Glycol-based Type I Aircraft Deicing Fluids / Biodegradation 12(1):59~68
Trifunović, D. / 2016 / Ethylene Glycol Metabolism in the Acetogen Acetobacterium woodii / Journal of Bacteriology 198(7):1058~1062
Gaston, L. W. / 1963 / Fermentation of Ethylene Glycol by Clostridium glycolicum, SP.N / Journal of Bacteriology 85:356~362
ToxGuideTM for Ethylene Glycol / ATSDR
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