Effects of methanol and carbon tetrachloride on sonolysis of 1,4 - dioxane in relation to temperature / Hyun-Seok Son in Industrial & engineering chemistry research, Vol. 51 N° 26 (Juillet 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 26 (Juillet 2012) . - pp. 8939-8944 Titre : Effects of methanol and carbon tetrachloride on sonolysis of 1,4 - dioxane in relation to temperature Type de document : texte imprimé Auteurs : Hyun-Seok Son, Auteur ; Kyung-Duk Zoh, Auteur Année de publication : 2012 Article en page(s) : pp. 8939-8944 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Sonolysis Résumé : The effects of methanol and carbon tetrachloride (CT) on the degradation of 1,4-dioxane via ultrasound irradiation were investigated by estimating the production rate of H2O2 and the degradation efficiency of the substrates. At 5 and 20 °C, the production rate of H2O2 significantly decreased as methanol concentration in pure water increased and during sonolysis of 1,4-dixoane. The sonolytic efficiency of 1,4-dioxane with methanol greatly decreased over 60 min at 5 °C and 90 min at 20 °C. Production of H2O2 increased during CT sonolysis at 5 °C but decreased at 20 and 40 °C, with efficiency greatest at 5 °C. Sonolysis of 1,4-dioxane with CT was enhanced from the beginning reaction at 5 °C and 40 min at 20 °C compared to the reactions without CT but was slightly lower at 40 °C. The results elucidate sonolytic mechanisms, such as pyrolysis and redox, in relation to reaction temperature, as well as suggest sonolytic conditions for the effective degradation of CT and 1,4-dioxane. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26107449 [article] Effects of methanol and carbon tetrachloride on sonolysis of 1,4 - dioxane in relation to temperature [texte imprimé] / Hyun-Seok Son, Auteur ; Kyung-Duk Zoh, Auteur . - 2012 . - pp. 8939-8944. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 26 (Juillet 2012) . - pp. 8939-8944 Mots-clés : Sonolysis Résumé : The effects of methanol and carbon tetrachloride (CT) on the degradation of 1,4-dioxane via ultrasound irradiation were investigated by estimating the production rate of H2O2 and the degradation efficiency of the substrates. At 5 and 20 °C, the production rate of H2O2 significantly decreased as methanol concentration in pure water increased and during sonolysis of 1,4-dixoane. The sonolytic efficiency of 1,4-dioxane with methanol greatly decreased over 60 min at 5 °C and 90 min at 20 °C. Production of H2O2 increased during CT sonolysis at 5 °C but decreased at 20 and 40 °C, with efficiency greatest at 5 °C. Sonolysis of 1,4-dioxane with CT was enhanced from the beginning reaction at 5 °C and 40 min at 20 °C compared to the reactions without CT but was slightly lower at 40 °C. The results elucidate sonolytic mechanisms, such as pyrolysis and redox, in relation to reaction temperature, as well as suggest sonolytic conditions for the effective degradation of CT and 1,4-dioxane. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26107449

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