| Removal of natural organic matter and THM formation potential by ultra- and nanofiltration of surface water. | |
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MedLine Citation:
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PMID: 17765283 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Natural organic matter (NOM) and trihalomethane formation potential (THMFP) removal were evaluated by ultrafiltration (UF) and nanofiltration (NF). Ten different raw water sources in Alicante province (SE Spain) were analysed. Five types of membranes of different materials were tested with a dead-end-type stirred UF cell. Additional measurements, such as dissolved organic carbon, ultraviolet absorbance (254nm), THMFP, ion concentration, pH, conductivity, etc. were made on raw water, permeates and concentrates. The SUVA value was used to determine the hydrophobicity of the water analysed. The elimination of NOM and THMFP is correlated with the molecular weight (MW) of NOM determined by size exclusion chromatography (SEC). The flux decline trends were correlated with cation concentration. NOM removal by UF is low, which correlates with the average MW determined by SEC with an average value of 922g/mol (between 833 and 1031g/mol). However, the NOM removal obtained with the NF90 and NF270 NF membranes for all water sources is almost complete (90%). THMFP removal is related to hydrophobicity and permeability of membrane. The NFT50 membrane removes almost 100% of the THMFP of more hydrophobic waters. |
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Authors:
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Angeles de la Rubia; Manuel Rodríguez; Víctor M León; Daniel Prats |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't Date: 2007-08-06 |
Journal Detail:
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Title: Water research Volume: 42 ISSN: 0043-1354 ISO Abbreviation: Water Res. Publication Date: 2008 Feb |
Date Detail:
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Created Date: 2008-01-24 Completed Date: 2008-06-03 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0105072 Medline TA: Water Res Country: England |
Other Details:
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Languages: eng Pagination: 714-22 Citation Subset: IM |
Affiliation:
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Water and Environmental Science Institute, University of Alicante, PO Box 99, 03080 Alicante, Spain. angeles.rubia@ua.es |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Anions
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analysis,
chemistry Fresh Water / analysis, chemistry Metals / analysis, chemistry Molecular Weight Trihalomethanes / chemistry* Ultrafiltration / instrumentation Water Pollutants / analysis*, chemistry Water Purification / instrumentation*, methods |
| Chemical | |
Reg. No./Substance:
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0/Anions; 0/Metals; 0/Trihalomethanes; 0/Water Pollutants |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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