Occurrence and elimination of nonylphenol ethoxylates and metabolites in municipal wastewater and effluents / by Hing-Biu Lee and Thomas E. Peart, Aquatic Ecosystem Protection Branch, National Water Research... : En13-5/98-32E-PDF
"A survey of the concentrations of nonylphenol ethoxylates (NPEO) and their metabolites in wastewater samples collected from a Canadian sewage treatment plant using primary and secondary treatment is presented. 24h-Hr composite raw sewage, primary effluent and final effluent samples were collected monthly over a one-year period. Levels of NPnEO (n=1 to 17) and their metabolites, nonylphenol (NP) and nonylphenoxy carboxylic acids (NPEC), in these samples were determined by HPLC and GC/MS methods. While ca. 85% of the total alkylphenolics in raw sewage are ethoxylates, the major component (nearly 80%) in the final effluent was in the form of carboxylic acids. During this study period, the median total alkylphenolic concentrations in raw sewage and final effluent were 526 and 248 nmol/L, respective1y, representing an overall elimination rate of 53%. The estimated daily discharge of the nonylphenolics to the aquatic environment varied from 15 to 44 moles, with a median value of 20 moles. These data suggested that conventional sewage treatments are ineffective in the removal of the surfactant-derived metabolites"--Abstract.
Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.872704&sl=1
| Ministère/Organisme | Canada. Environment Canada. National Water Research Institute (Canada). Aquatic Ecosystem Protection Branch. National Water Research Institute (Canada) |
|---|---|
| Titre | Occurrence and elimination of nonylphenol ethoxylates and metabolites in municipal wastewater and effluents / by Hing-Biu Lee and Thomas E. Peart, Aquatic Ecosystem Protection Branch, National Water Research Institute, Environment Canada. |
| Titre de la série | NWRI contribution ; no. 98-032 |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| Format | Électronique |
| Document électronique | |
| Note(s) | Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. Includes management perspective and abstract in French. |
| Information sur la publication | Burlington, Ontario : National Water Research Institute = Institut national de recherche sur les eaux, [1998] |
| Auteur / Contributeur | Lee, H. B., author. Peart, Thomas E., author. |
| Description | 1 online resource (4 unnumbered pages, 20 pages) : illustration. |
| Numéro de catalogue |
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| Descripteurs | Pollutants Waste water |