Fate and mass loading of antibiotics in hospital and domestic wastewater treatment plants in Bangkok, Thailand

Excessive and inappropriate use of antibiotics contributes to the spread of antibiotic resistance in the environment, especially in low- to middle-income countries. This study investigated the occurrence, relative abundance, and fate of eight antibiotics at each treatment stage in four domestic and...

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Autores principales:	Donwichai Sinthuchai, Suwanna Kitpati Boontanon, Pitchaya Piyaviriyakul, Narin Boontanon, Ranjna Jindal, Chongrak Polprasert
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	antibiotics domestic wastewater hospital wastewater mass loading wastewater treatment plant Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/e802b6a079ed4d29b2b5cc3d17fc2541
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spelling	oai:doaj.org-article:e802b6a079ed4d29b2b5cc3d17fc25412021-11-23T18:22:46ZFate and mass loading of antibiotics in hospital and domestic wastewater treatment plants in Bangkok, Thailand2043-90832408-936210.2166/washdev.2021.092https://doaj.org/article/e802b6a079ed4d29b2b5cc3d17fc25412021-11-01T00:00:00Zhttp://washdev.iwaponline.com/content/11/6/959https://doaj.org/toc/2043-9083https://doaj.org/toc/2408-9362Excessive and inappropriate use of antibiotics contributes to the spread of antibiotic resistance in the environment, especially in low- to middle-income countries. This study investigated the occurrence, relative abundance, and fate of eight antibiotics at each treatment stage in four domestic and four hospital wastewater treatment plants (dWWTPs and hWWTPs, respectively), as well as mass loadings into the receiving water environments in Bangkok, Thailand. Samples were prepared by solid-phase extraction and analyzed by high-performance liquid chromatography–tandem mass spectrometry. Antibiotic concentrations were higher in hWWTPs than dWWTPs; approximately 60 times for influents and 10 times for effluents. Ciprofloxacin concentration increased in most dWWTPs, especially in the aeration unit and return sludge, suggesting that it predominantly occurred in the solid phase. Sulfamethoxazole predominantly occurred in the dissolved form, which is more difficult to degrade, and exhibited high concentrations in effluent. Moreover, antibiotic pollutant loadings were approximately 30–3,530 times higher from dWWTPs than from hWWTPs due to higher daily discharges from the domestic sector. These plants are a major point source of antibiotic residue release to aquatic environments; thus, their efficiency should be improved by incorporating advanced treatment processes to ensure effective removal of antibiotics. HIGHLIGHTS Antibiotic concentrations in influent and effluent were 60 times and 10 times higher in hWWTPs than dWWTPs.; Mass loading of individual antibiotics was 30–3,530 times higher from dWWTPs than hWWTPs.; Ciprofloxacin increased substantially in aeration unit and return sludge, indicating its predominance in sludge.; Sulfamethoxazole exhibited the highest loading as difficult to remove in domestic and hospital treatment plants.;Donwichai SinthuchaiSuwanna Kitpati BoontanonPitchaya PiyaviriyakulNarin BoontanonRanjna JindalChongrak PolprasertIWA Publishingarticleantibioticsdomestic wastewaterhospital wastewatermass loadingwastewater treatment plantEnvironmental technology. Sanitary engineeringTD1-1066ENJournal of Water, Sanitation and Hygiene for Development, Vol 11, Iss 6, Pp 959-971 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	antibiotics domestic wastewater hospital wastewater mass loading wastewater treatment plant Environmental technology. Sanitary engineering TD1-1066
spellingShingle	antibiotics domestic wastewater hospital wastewater mass loading wastewater treatment plant Environmental technology. Sanitary engineering TD1-1066 Donwichai Sinthuchai Suwanna Kitpati Boontanon Pitchaya Piyaviriyakul Narin Boontanon Ranjna Jindal Chongrak Polprasert Fate and mass loading of antibiotics in hospital and domestic wastewater treatment plants in Bangkok, Thailand
description	Excessive and inappropriate use of antibiotics contributes to the spread of antibiotic resistance in the environment, especially in low- to middle-income countries. This study investigated the occurrence, relative abundance, and fate of eight antibiotics at each treatment stage in four domestic and four hospital wastewater treatment plants (dWWTPs and hWWTPs, respectively), as well as mass loadings into the receiving water environments in Bangkok, Thailand. Samples were prepared by solid-phase extraction and analyzed by high-performance liquid chromatography–tandem mass spectrometry. Antibiotic concentrations were higher in hWWTPs than dWWTPs; approximately 60 times for influents and 10 times for effluents. Ciprofloxacin concentration increased in most dWWTPs, especially in the aeration unit and return sludge, suggesting that it predominantly occurred in the solid phase. Sulfamethoxazole predominantly occurred in the dissolved form, which is more difficult to degrade, and exhibited high concentrations in effluent. Moreover, antibiotic pollutant loadings were approximately 30–3,530 times higher from dWWTPs than from hWWTPs due to higher daily discharges from the domestic sector. These plants are a major point source of antibiotic residue release to aquatic environments; thus, their efficiency should be improved by incorporating advanced treatment processes to ensure effective removal of antibiotics. HIGHLIGHTS Antibiotic concentrations in influent and effluent were 60 times and 10 times higher in hWWTPs than dWWTPs.; Mass loading of individual antibiotics was 30–3,530 times higher from dWWTPs than hWWTPs.; Ciprofloxacin increased substantially in aeration unit and return sludge, indicating its predominance in sludge.; Sulfamethoxazole exhibited the highest loading as difficult to remove in domestic and hospital treatment plants.;
format	article
author	Donwichai Sinthuchai Suwanna Kitpati Boontanon Pitchaya Piyaviriyakul Narin Boontanon Ranjna Jindal Chongrak Polprasert
author_facet	Donwichai Sinthuchai Suwanna Kitpati Boontanon Pitchaya Piyaviriyakul Narin Boontanon Ranjna Jindal Chongrak Polprasert
author_sort	Donwichai Sinthuchai
title	Fate and mass loading of antibiotics in hospital and domestic wastewater treatment plants in Bangkok, Thailand
title_short	Fate and mass loading of antibiotics in hospital and domestic wastewater treatment plants in Bangkok, Thailand
title_full	Fate and mass loading of antibiotics in hospital and domestic wastewater treatment plants in Bangkok, Thailand
title_fullStr	Fate and mass loading of antibiotics in hospital and domestic wastewater treatment plants in Bangkok, Thailand
title_full_unstemmed	Fate and mass loading of antibiotics in hospital and domestic wastewater treatment plants in Bangkok, Thailand
title_sort	fate and mass loading of antibiotics in hospital and domestic wastewater treatment plants in bangkok, thailand
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/e802b6a079ed4d29b2b5cc3d17fc2541
work_keys_str_mv	AT donwichaisinthuchai fateandmassloadingofantibioticsinhospitalanddomesticwastewatertreatmentplantsinbangkokthailand AT suwannakitpatiboontanon fateandmassloadingofantibioticsinhospitalanddomesticwastewatertreatmentplantsinbangkokthailand AT pitchayapiyaviriyakul fateandmassloadingofantibioticsinhospitalanddomesticwastewatertreatmentplantsinbangkokthailand AT narinboontanon fateandmassloadingofantibioticsinhospitalanddomesticwastewatertreatmentplantsinbangkokthailand AT ranjnajindal fateandmassloadingofantibioticsinhospitalanddomesticwastewatertreatmentplantsinbangkokthailand AT chongrakpolprasert fateandmassloadingofantibioticsinhospitalanddomesticwastewatertreatmentplantsinbangkokthailand
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Fate and mass loading of antibiotics in hospital and domestic wastewater treatment plants in Bangkok, Thailand

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