Radiolytic decomposition of multi-class surfactants and their biotransformation products in sewage treatment plant effluents
9 pages, 6 figures, 3 tables.-- PMID: 16808959 [PubMed].-- Online version available on Jun 30, 2006.
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Format: | artículo biblioteca |
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Elsevier
2007-01
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Subjects: | Alkylphenol ethoxylates, Advanced oxidation processes, Electron beam irradiation, Surfactants, Wastewater treatment, |
Online Access: | http://hdl.handle.net/10261/10830 |
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dig-idaea-es-10261-108302009-02-20T12:13:57Z Radiolytic decomposition of multi-class surfactants and their biotransformation products in sewage treatment plant effluents Petrovic, Mira Gehringer, P. Eschweiler, H. Barceló, Damià Alkylphenol ethoxylates Advanced oxidation processes Electron beam irradiation Surfactants Wastewater treatment 9 pages, 6 figures, 3 tables.-- PMID: 16808959 [PubMed].-- Online version available on Jun 30, 2006. Electron beam irradiation (EBI), as one of the most efficient advanced oxidation processes, was applied to the treatment of sewage treatment plant (STP) effluent, with the objective of evaluating the effectiveness of radiolytic decomposition of multi-class surfactants. Target compounds, included several high-volume surfactant groups, such as alkylphenol ethoxylates (APEOs) and their biotransformation products, linear alkylbenzene sulfonates (LAS), alkyl sulfates (AS), alkylether sulfates (AES), coconut diethanol amides (CDEA), alcohol ethoxylates (AEO) and polyethylene glycols (PEGs). EBI treatment of STP effluent (total concentration of APEO-derived compounds 265 μg l-1 being APE(2)C the most abundant by-degradation products) resulted in efficient decomposition of all alkylphenolic compounds; elimination of 94% longer ethoxy chain nonylphenol ethoxylates (NPEO, n(EO) = 3–15) was obtained when 3 kGy were applied. Slightly less efficient decomposition of short ethoxy chain oligomers (NPEO1 and NPEO2) was observed, resulting in disappearance of about 80% of the initially present compounds. LC-MS analysis of treated wastewater suggested that the mechanism of EBI degradation of APEOs is a combination of two parallel pathways: a progressive shortening and oxidation of the ethoxy chain, which resulted in a formation of short ethoxy chain oligomers and APECs and central fission that resulted in formation of PEGs. Decomposition of APECs at 1 kGy initially yielded APs, which were subsequently eliminated applying higher radiation doses. With a radiation dose of 2 kGy about 95% of NPE(1)C and 97% of NPE(2)C were decomposed. Similar elimination rates were obtained for octylphenolic compounds. Radiolytic treatment applied was also very effective in removing PEGs formed as by-products from APEO degradation, as well as in decomposing other surfactants, such as linear LAS, AS and AES. The work has been supported by the EU Project PTHREE (EVK1-2001-00283) and by the Spanish Ministerio de Ciencia y Tecnologia (PPQ2002-10945-E). IST (UK) is gratefully acknowledged for providing the SPE cartridges and Merck (Germany) for providing the HPLC columns. Peer reviewed 2009-02-19T11:47:10Z 2009-02-19T11:47:10Z 2007-01 artículo http://purl.org/coar/resource_type/c_6501 Chemosphere 66(1): 114-122 (2007) 0045-6535 http://hdl.handle.net/10261/10830 10.1016/j.chemosphere.2006.05.008 en http://dx.doi.org/10.1016/j.chemosphere.2006.05.008 none 162 bytes application/msword Elsevier |
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Alkylphenol ethoxylates Advanced oxidation processes Electron beam irradiation Surfactants Wastewater treatment Alkylphenol ethoxylates Advanced oxidation processes Electron beam irradiation Surfactants Wastewater treatment |
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Alkylphenol ethoxylates Advanced oxidation processes Electron beam irradiation Surfactants Wastewater treatment Alkylphenol ethoxylates Advanced oxidation processes Electron beam irradiation Surfactants Wastewater treatment Petrovic, Mira Gehringer, P. Eschweiler, H. Barceló, Damià Radiolytic decomposition of multi-class surfactants and their biotransformation products in sewage treatment plant effluents |
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9 pages, 6 figures, 3 tables.-- PMID: 16808959 [PubMed].-- Online version available on Jun 30, 2006. |
format |
artículo |
topic_facet |
Alkylphenol ethoxylates Advanced oxidation processes Electron beam irradiation Surfactants Wastewater treatment |
author |
Petrovic, Mira Gehringer, P. Eschweiler, H. Barceló, Damià |
author_facet |
Petrovic, Mira Gehringer, P. Eschweiler, H. Barceló, Damià |
author_sort |
Petrovic, Mira |
title |
Radiolytic decomposition of multi-class surfactants and their biotransformation products in sewage treatment plant effluents |
title_short |
Radiolytic decomposition of multi-class surfactants and their biotransformation products in sewage treatment plant effluents |
title_full |
Radiolytic decomposition of multi-class surfactants and their biotransformation products in sewage treatment plant effluents |
title_fullStr |
Radiolytic decomposition of multi-class surfactants and their biotransformation products in sewage treatment plant effluents |
title_full_unstemmed |
Radiolytic decomposition of multi-class surfactants and their biotransformation products in sewage treatment plant effluents |
title_sort |
radiolytic decomposition of multi-class surfactants and their biotransformation products in sewage treatment plant effluents |
publisher |
Elsevier |
publishDate |
2007-01 |
url |
http://hdl.handle.net/10261/10830 |
work_keys_str_mv |
AT petrovicmira radiolyticdecompositionofmulticlasssurfactantsandtheirbiotransformationproductsinsewagetreatmentplanteffluents AT gehringerp radiolyticdecompositionofmulticlasssurfactantsandtheirbiotransformationproductsinsewagetreatmentplanteffluents AT eschweilerh radiolyticdecompositionofmulticlasssurfactantsandtheirbiotransformationproductsinsewagetreatmentplanteffluents AT barcelodamia radiolyticdecompositionofmulticlasssurfactantsandtheirbiotransformationproductsinsewagetreatmentplanteffluents |
_version_ |
1777669135929442304 |