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Oxidation of dimethyl sulfoxide in aqueous solution using microbubbles / Pan Li in Industrial & engineering chemistry research, Vol. 48 N° 17 (Septembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 17 (Septembre 2009) . - pp. 8048–8053 Titre : Oxidation of dimethyl sulfoxide in aqueous solution using microbubbles Type de document : texte imprimé Auteurs : Pan Li, Auteur ; Hideki Tsuge, Auteur ; Keiko Itoh, Auteur Année de publication : 2009 Article en page(s) : pp. 8048–8053 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Dimethyl  sulfoxide  wastewater  Semiconductor  manufacturing  industry  Biological  treatment Résumé : A large quantity of dimethyl sulfoxide (DMSO) wastewater is discharged from washing and rinsing processes in semiconductor manufacturing industry. Traditional biological treatment is known to be difficult for the treatment of DMSO-containing wastewater because of odor problems. Ozonation of DMSO combined with a biological process is suggested to be a cost-efficient treatment solution, whereas the application of ozone to wastewater treatment has been limited by its low utilization efficiency and high cost. In this study, we applied an ozone microbubble generator to increase ozone transfer efficiency in the aqueous solution. The oxidation of DMSO by ozone microbubbles was investigated in a bubble column reactor with an inner diameter of 20 cm. We studied the dependence of DMSO degradation on the gas and liquid flow rates. Experimental results indicate that the ozonation of DMSO is a first-order mass-transfer-controlled reaction and the reaction rate constant increases with increasing gas velocity. Ozone transfer ratio increases with decrease in gas flow rate. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801565v [article] Oxidation of dimethyl sulfoxide in aqueous solution using microbubbles [texte imprimé] / Pan Li, Auteur ; Hideki Tsuge, Auteur ; Keiko Itoh, Auteur . - 2009 . - pp. 8048–8053. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 17 (Septembre 2009) . - pp. 8048–8053 Mots-clés : Dimethyl  sulfoxide  wastewater  Semiconductor  manufacturing  industry  Biological  treatment Résumé : A large quantity of dimethyl sulfoxide (DMSO) wastewater is discharged from washing and rinsing processes in semiconductor manufacturing industry. Traditional biological treatment is known to be difficult for the treatment of DMSO-containing wastewater because of odor problems. Ozonation of DMSO combined with a biological process is suggested to be a cost-efficient treatment solution, whereas the application of ozone to wastewater treatment has been limited by its low utilization efficiency and high cost. In this study, we applied an ozone microbubble generator to increase ozone transfer efficiency in the aqueous solution. The oxidation of DMSO by ozone microbubbles was investigated in a bubble column reactor with an inner diameter of 20 cm. We studied the dependence of DMSO degradation on the gas and liquid flow rates. Experimental results indicate that the ozonation of DMSO is a first-order mass-transfer-controlled reaction and the reaction rate constant increases with increasing gas velocity. Ozone transfer ratio increases with decrease in gas flow rate. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801565v