Mineralization of sulfonamides from wastewater using ozone-based systems

Ozone, UV/ozone, ozone/persulfate (PS) and UV/ozone/PS systems were used to mineralize sulfonamides. Sulfadiazine (SDZ), sulfamerazine (SMR) and sulfamethazine (SMZ) were the target compounds. The novel contribution of this study is its determination of the effects of PS addition, sulfonamide struct...

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Autores principales:	T. H. Ho, C. H. Wu, T. Y. Han, W. J. Syu
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	mineralization ozone sulfadiazine sulfamerazine sulfamethazine Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/0706676e3dfd4404828ff06db43a7fa7
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spelling	oai:doaj.org-article:0706676e3dfd4404828ff06db43a7fa72021-11-06T11:22:13ZMineralization of sulfonamides from wastewater using ozone-based systems0273-12231996-973210.2166/wst.2021.325https://doaj.org/article/0706676e3dfd4404828ff06db43a7fa72021-09-01T00:00:00Zhttp://wst.iwaponline.com/content/84/6/1379https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Ozone, UV/ozone, ozone/persulfate (PS) and UV/ozone/PS systems were used to mineralize sulfonamides. Sulfadiazine (SDZ), sulfamerazine (SMR) and sulfamethazine (SMZ) were the target compounds. The novel contribution of this study is its determination of the effects of PS addition, sulfonamide structure, pH and salinity on sulfonamide mineralization in ozone-based systems. The mineralization rate of sulfonamides satisfied pseudo-first-order kinetics. The SMZ mineralization rate constant in ozone, UV/ozone, ozone/PS and UV/ozone/PS systems at pH 5 were 0.0058; 0.0101; 0.0069 and 0.0802 min−1, respectively, and those at pH 7 were 0.0075; 0.0116; 0.0083 and 0.0873 min−1, respectively. The increase in the number of methyl substituents in the heterocyclic group of SMZ and the corresponding increase in the steric hindrance of radical addition, reduced mineralization rates below those of SMR and SDZ. The addition of PS promoted sulfonamide mineralization in the ozone-based systems; conversely, salinity inhibited sulfonamide mineralization. HIGHLIGHTS Ozone, UV/ozone, ozone/PS and UV/ozone/PS systems were investigated.; The mineralization constants of SDZ, SMR and SMZ were compared.; The effects of pH, salinity and PS addition on mineralization were determined.; SMZ was most refractory and UV/ozone/PS was most effective.;T. H. HoC. H. WuT. Y. HanW. J. SyuIWA PublishingarticlemineralizationozonesulfadiazinesulfamerazinesulfamethazineEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 6, Pp 1379-1388 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	mineralization ozone sulfadiazine sulfamerazine sulfamethazine Environmental technology. Sanitary engineering TD1-1066
spellingShingle	mineralization ozone sulfadiazine sulfamerazine sulfamethazine Environmental technology. Sanitary engineering TD1-1066 T. H. Ho C. H. Wu T. Y. Han W. J. Syu Mineralization of sulfonamides from wastewater using ozone-based systems
description	Ozone, UV/ozone, ozone/persulfate (PS) and UV/ozone/PS systems were used to mineralize sulfonamides. Sulfadiazine (SDZ), sulfamerazine (SMR) and sulfamethazine (SMZ) were the target compounds. The novel contribution of this study is its determination of the effects of PS addition, sulfonamide structure, pH and salinity on sulfonamide mineralization in ozone-based systems. The mineralization rate of sulfonamides satisfied pseudo-first-order kinetics. The SMZ mineralization rate constant in ozone, UV/ozone, ozone/PS and UV/ozone/PS systems at pH 5 were 0.0058; 0.0101; 0.0069 and 0.0802 min−1, respectively, and those at pH 7 were 0.0075; 0.0116; 0.0083 and 0.0873 min−1, respectively. The increase in the number of methyl substituents in the heterocyclic group of SMZ and the corresponding increase in the steric hindrance of radical addition, reduced mineralization rates below those of SMR and SDZ. The addition of PS promoted sulfonamide mineralization in the ozone-based systems; conversely, salinity inhibited sulfonamide mineralization. HIGHLIGHTS Ozone, UV/ozone, ozone/PS and UV/ozone/PS systems were investigated.; The mineralization constants of SDZ, SMR and SMZ were compared.; The effects of pH, salinity and PS addition on mineralization were determined.; SMZ was most refractory and UV/ozone/PS was most effective.;
format	article
author	T. H. Ho C. H. Wu T. Y. Han W. J. Syu
author_facet	T. H. Ho C. H. Wu T. Y. Han W. J. Syu
author_sort	T. H. Ho
title	Mineralization of sulfonamides from wastewater using ozone-based systems
title_short	Mineralization of sulfonamides from wastewater using ozone-based systems
title_full	Mineralization of sulfonamides from wastewater using ozone-based systems
title_fullStr	Mineralization of sulfonamides from wastewater using ozone-based systems
title_full_unstemmed	Mineralization of sulfonamides from wastewater using ozone-based systems
title_sort	mineralization of sulfonamides from wastewater using ozone-based systems
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/0706676e3dfd4404828ff06db43a7fa7
work_keys_str_mv	AT thho mineralizationofsulfonamidesfromwastewaterusingozonebasedsystems AT chwu mineralizationofsulfonamidesfromwastewaterusingozonebasedsystems AT tyhan mineralizationofsulfonamidesfromwastewaterusingozonebasedsystems AT wjsyu mineralizationofsulfonamidesfromwastewaterusingozonebasedsystems
_version_	1718443651141468160

Mineralization of sulfonamides from wastewater using ozone-based systems

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