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Degradation of 4-chlorophenol in wastewater by organic oxidants / Swati Sharma in Industrial & engineering chemistry research, Vol. 49 N° 7 (Avril 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 7 (Avril 2010) . - pp. 3094–3098 Titre : Degradation of 4-chlorophenol in wastewater by organic oxidants Type de document : texte imprimé Auteurs : Swati Sharma, Auteur ; Mausumi Mukhopadhyay, Auteur ; V. P. Murthy, Auteur Année de publication : 2010 Article en page(s) : pp. 3094–3098 Note générale : Industrial Chemistry Langues : Anglais (eng) Mots-clés : Chlorophenol  Wastewater  Organic  Oxidants Résumé : The objective of this work was to investigate degradation and mineralization of model compound 4-chlorophenol (4-CP) using advanced oxidation processes (AOPs). This work focused on the degradation of 4-CP by UV and organic oxidants, such as peroxy acetic acid (PAA), p-nitrobenzoic acid (PNBA), and methyl ethyl ketone peroxide (MEKP), in combination. It was observed that maximum degradation of 4-CP by organic oxidants occurred within the first 10 min. PAA was found to be the best oxidant of all the organic oxidants used. Experiments were also conducted with varying concentration of PAA. Experimental results demonstrated that UV/PAA facilitated 98% removal/mineralization of 4-CP. Mineralization studies were taken up by chloride ion determination and chemical oxygen demand (COD) measurement. The chloride ion concentration was observed to decrease progressively which indicated degradation and mineralization of 4-CP. The COD declined gradually when PAA and MEKP were used as oxidants. The reactions were also followed by HPLC and GC-MS analysis for residual concentration and identification of intermediates and degradation products, respectively. The degraded compound was identified as 4-methyl-3-penten-2-one. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9018066 [article] Degradation of 4-chlorophenol in wastewater by organic oxidants [texte imprimé] / Swati Sharma, Auteur ; Mausumi Mukhopadhyay, Auteur ; V. P. Murthy, Auteur . - 2010 . - pp. 3094–3098. Industrial Chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 7 (Avril 2010) . - pp. 3094–3098 Mots-clés : Chlorophenol  Wastewater  Organic  Oxidants Résumé : The objective of this work was to investigate degradation and mineralization of model compound 4-chlorophenol (4-CP) using advanced oxidation processes (AOPs). This work focused on the degradation of 4-CP by UV and organic oxidants, such as peroxy acetic acid (PAA), p-nitrobenzoic acid (PNBA), and methyl ethyl ketone peroxide (MEKP), in combination. It was observed that maximum degradation of 4-CP by organic oxidants occurred within the first 10 min. PAA was found to be the best oxidant of all the organic oxidants used. Experiments were also conducted with varying concentration of PAA. Experimental results demonstrated that UV/PAA facilitated 98% removal/mineralization of 4-CP. Mineralization studies were taken up by chloride ion determination and chemical oxygen demand (COD) measurement. The chloride ion concentration was observed to decrease progressively which indicated degradation and mineralization of 4-CP. The COD declined gradually when PAA and MEKP were used as oxidants. The reactions were also followed by HPLC and GC-MS analysis for residual concentration and identification of intermediates and degradation products, respectively. The degraded compound was identified as 4-methyl-3-penten-2-one. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9018066