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UV photooxidation of NOM: issues related to drinking water treatment

2003; UWA Publishing; Volume: 52; Issue: 8 Linguagem: Inglês

10.2166/aqua.2003.0051

1365-2087

Adele Parkinson, Felicity Roddick, Malcolm Hobday,

Water Treatment and Disinfection

Research Article| December 01 2003 UV photooxidation of NOM: issues related to drinking water treatment Adele Parkinson; Adele Parkinson 1School of Civil and Chemical Engineering, RMIT University, GPO Box 2476V, Melbourne 3001, VIC, Australia Search for other works by this author on: This Site PubMed Google Scholar Felicity A. Roddick; Felicity A. Roddick 1School of Civil and Chemical Engineering, RMIT University, GPO Box 2476V, Melbourne 3001, VIC, Australia Tel: (+613) 9925 2080 Fax: (+613) 9925 3746; E-mail: felicity.roddick@rmit.edu.au Search for other works by this author on: This Site PubMed Google Scholar Malcolm D. Hobday Malcolm D. Hobday 2Department of Applied Chemistry, RMIT University, GPO Box 2476V, Melbourne 3001, VIC, Australia Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2003) 52 (8): 577–586. https://doi.org/10.2166/aqua.2003.0051 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Twitter LinkedIn Tools Icon Tools Cite Icon Cite Permissions Search Site Search nav search search input Search input auto suggest search filter All ContentAll JournalsThis Journal Search Advanced Search Citation Adele Parkinson, Felicity A. Roddick, Malcolm D. Hobday; UV photooxidation of NOM: issues related to drinking water treatment. Journal of Water Supply: Research and Technology-Aqua 1 December 2003; 52 (8): 577–586. doi: https://doi.org/10.2166/aqua.2003.0051 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex The effect of UVA (300–400 nm), UVB (260–340 nm) and UVC (254 nm) wavelengths on absorbance spectra, dissolved organic carbon (DOC) levels, molecular size distributions, bacterial regrowth potentials (BRP) and trihalomethane formation potentials (THMFP) of aquatic natural organic matter (NOM) from a number of sources was examined to ascertain the use of photooxidation for the removal of NOM from drinking water. Differences were observed in the normalised UV spectra of the NOM samples, and UVC-irradiation resulted in the largest reduction in absorbance at 254 nm and DOC levels. The various UV wavelengths appeared to reduce the molecular size in a similar fashion with sequential degradation from high molecular weight to low molecular weight by-products. Treatment by UVA-, UVB- and UVC-radiation also resulted in increased BRP for all NOM samples. The THMFP of the UV-treated NOM samples HV MIEX and HV Raw appeared to be dependent on the characteristics of the NOM sample and the UV dose. The THMFP of UVA- and UVB-irradiated HV MIEX increased and an initial increase was observed for UVC-irradiated HV MIEX before decreasing with further treatment, while UVC-irradiated HV Raw showed decreased THMFP for all treatment times. NOM, photooxidation, UVA, UVB, UVC, water treatment This content is only available as a PDF. © IWA Publishing 2003 You do not currently have access to this content.