Aerobic biodegradation of nonylphenol ethoxylates in shaking-flask test

Nonylphenol ethoxylates (NPEOs), which are widely used for industrial and domestic purposes, exert adverse effects on wildlife after being used and discharged into the environment. However, their ultimate biodegradability and biodegradation pathway remains unclear. In this study, the aerobic degrada...

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Autores principales:	Wang,Ping, Nong,Xu-Hua, Ge,Jie-Hong
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2011
Materias:	aerobic biodegradation degradation pathway ESI-MS HPLC nonylphenol ethoxylates
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000400001
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spelling	oai:scielo:S0717-345820110004000012012-04-17Aerobic biodegradation of nonylphenol ethoxylates in shaking-flask testWang,PingNong,Xu-HuaGe,Jie-Hong aerobic biodegradation degradation pathway ESI-MS HPLC nonylphenol ethoxylates Nonylphenol ethoxylates (NPEOs), which are widely used for industrial and domestic purposes, exert adverse effects on wildlife after being used and discharged into the environment. However, their ultimate biodegradability and biodegradation pathway remains unclear. In this study, the aerobic degradability of nonylphenol ethoxylates (NPEOs) by the acclimated microorganisms in active sludge was examined using shaking-flask tests. The degradation of benzene rings in NPEOs was determined using UV spectroscopy and high performance liquid chromatography (HPLC). Results showed that more than 80% of benzene rings were removed after 8-10 days of degradation, and the majority of NPEOs were also removed after 9 days of degradation, indicating NPEOs and the benzene rings could be ultimately degraded by microorganisms in acclimated active sludge. Electrospray ionization-mass spectroscopy (ESI-MS) analysis of biodegradation intermediates indicate that stepwise omega, beta-oxidation of EO chains or fission of EO chains, and further omega, beta-oxidation of alkyl-chain for short-EO-chain NPEOs constitute the main pathway in the early stage, and complete biodegradation occur when the benzene rings in these molecules are opened in the later stage.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.14 n.4 20112011-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000400001en
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	aerobic biodegradation degradation pathway ESI-MS HPLC nonylphenol ethoxylates
spellingShingle	aerobic biodegradation degradation pathway ESI-MS HPLC nonylphenol ethoxylates Wang,Ping Nong,Xu-Hua Ge,Jie-Hong Aerobic biodegradation of nonylphenol ethoxylates in shaking-flask test
description	Nonylphenol ethoxylates (NPEOs), which are widely used for industrial and domestic purposes, exert adverse effects on wildlife after being used and discharged into the environment. However, their ultimate biodegradability and biodegradation pathway remains unclear. In this study, the aerobic degradability of nonylphenol ethoxylates (NPEOs) by the acclimated microorganisms in active sludge was examined using shaking-flask tests. The degradation of benzene rings in NPEOs was determined using UV spectroscopy and high performance liquid chromatography (HPLC). Results showed that more than 80% of benzene rings were removed after 8-10 days of degradation, and the majority of NPEOs were also removed after 9 days of degradation, indicating NPEOs and the benzene rings could be ultimately degraded by microorganisms in acclimated active sludge. Electrospray ionization-mass spectroscopy (ESI-MS) analysis of biodegradation intermediates indicate that stepwise omega, beta-oxidation of EO chains or fission of EO chains, and further omega, beta-oxidation of alkyl-chain for short-EO-chain NPEOs constitute the main pathway in the early stage, and complete biodegradation occur when the benzene rings in these molecules are opened in the later stage.
author	Wang,Ping Nong,Xu-Hua Ge,Jie-Hong
author_facet	Wang,Ping Nong,Xu-Hua Ge,Jie-Hong
author_sort	Wang,Ping
title	Aerobic biodegradation of nonylphenol ethoxylates in shaking-flask test
title_short	Aerobic biodegradation of nonylphenol ethoxylates in shaking-flask test
title_full	Aerobic biodegradation of nonylphenol ethoxylates in shaking-flask test
title_fullStr	Aerobic biodegradation of nonylphenol ethoxylates in shaking-flask test
title_full_unstemmed	Aerobic biodegradation of nonylphenol ethoxylates in shaking-flask test
title_sort	aerobic biodegradation of nonylphenol ethoxylates in shaking-flask test
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000400001
work_keys_str_mv	AT wangping aerobicbiodegradationofnonylphenolethoxylatesinshakingflasktest AT nongxuhua aerobicbiodegradationofnonylphenolethoxylatesinshakingflasktest AT gejiehong aerobicbiodegradationofnonylphenolethoxylatesinshakingflasktest
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Aerobic biodegradation of nonylphenol ethoxylates in shaking-flask test

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