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Monitoring of Changes in Molecular Weight Distribution and Fluorescence Properties of Dissolved Matter (DOM) in Water Treatment Processes  

Park, Min-Hye (Department of Earth and Environmental Sciences, Sejong University)
Hur, Jin (Department of Earth and Environmental Sciences, Sejong University)
Publication Information
Journal of Korean Society on Water Environment / v.23, no.6, 2007 , pp. 843-849 More about this Journal
Abstract
Monitoring of NOM characteristics is important for improving removal efficiency of natural organic matter (NOM) in water treatment processes. In this study, several NOM characteristics, which include specific UV absorbance (SUVA), total carbonate content, molecular weight distribution, and fluorescence properties, were measured using samples collected from a pilot-scale water treatment plant consisting of coagulation/flocculation (C/F), filtration, ozonation and granular activated carbon (GAC) processes. The highest removal of NOM was observed in C/F and filtration processes as demonstrated by the reduction of dissolved organic carbon (DOC) by 25% and 21%, respectively. Despite nearly no change in DOC, however, the lowest SUVA value and the highest total carbohydrate content were observed in the sample from ozonation process. This indicates that non-degradable aromatic compounds become depleted and biodegradable organic compounds are enriched during the process. Comparison of synchronous fluorescence spectra of the samples showed that ozoation process increased protein-like fluorescence while it decreased fulvic-like and terrestrial humic-like fluorescence. Consistently, a slight peak of protein-like fluorescence was observed in the sample from ozonation process. The greatest change in molecular weight distributions of the samples was observed in C/F process. Comparison of size exclusion chromatogram of the samples revealed that NOM fractions with the molecular weight greater than 2000 Da were reduced by over 90% after C/F process. SUVA values and total carbohydrate content of the samples were well correlated with a ratio of protein-like fluorescence and terrestrial humic-like fluorescence intensities with the correlation coefficients of 0.99 and 0.91, respectively. This suggests that synchronous fluorescence properties of NOM could be used as useful tolls for monitoring changes of some NOM characteristics during water treatment processes.
Keywords
Dissolved organic matter; Fluorescence properties; Molecular weight distribution; Monitoring; Water treatment;
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Times Cited By KSCI : 2  (Citation Analysis)
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1 Amy, G. L., Sierka, R. A., Bedessem, J., Price, D. and Tan, L., Molecular size distributions of dissolved organic matter, Journal of American Water Works Association, 84(6), pp. 67-75 (1992)   DOI
2 Hung, C. C., Tang, D., Warnken, K. W. and Santschi, P. H., Distributions of carbonates, including uronic acids, in esturine waters of Galveston Bay, Marine Chemistry, 73, pp. 305-318 (2001)   DOI   ScienceOn
3 Kilduff, J. E., Karanfil, T., Chin, Y. P. and Weber, W. J. Jr., Adsorption of naturl organic polyelectrolytes by activated carbon: A size-exclusion chromatography study, Environ. Sci. Technol., 30, pp. 1336-1343 (1996)   DOI   ScienceOn
4 Westerhoff, P., Chen, W., and Esparza, M., Fluorescence analysis of a standard fulvic acid and tertiary treated wastewater, J. Environ. Qual., 30, pp. 2037-2046 (2001)   DOI   PUBMED
5 Chin, Y. P., Aiken, G. and O'Loughlin, E., Molecular weight, polydispersity, and spectroscopic properties of aquatic humic substances, Environ. Sci. Tech., 28, pp. 853-1858 (1994)
6 손희종,최근주,김상구,활성탄 공정과 생물여과 공정에서의 자연유기물질 제거특성, 대한환경공학회지,29(2), pp. 205-213 (2007)   과학기술학회마을
7 Camel, V. and Bermond, A., The use of ozon and associated oxidation processes in drinking water treatment, Wat. Res., 32(11), pp. 3208-3222 (1998)   DOI   ScienceOn
8 Hur, J., Jung, N. C. and Shin, J. K., Spectroscopic distribution of dissolved organic matter in a dam reservoir impacted by turbid storm runoff, Environ. Monit. Assess., 133, pp. 53-67 (2007)   DOI   PUBMED
9 Baker, A. and Inverarity, R., Protein-like fluorescence intensity as a possible tool for determining river water quality, Hydrological Processes, 18, pp. 927-2945 (2004)
10 Chen, J., LeBoeuf, E. J., Sheng, D. and Gu, B., Fluorescence spectroscopic studies of natural organic matter fractions, Chemosphere, 50, pp. 39-647 (2003)   DOI   ScienceOn
11 허진,신재기,박성원,하천 및 호소 수질관리를 위한 용존 자연유기물질 형광특성 분석, 대한환경공학회지, 28(9), pp. 940-948 (2006)   과학기술학회마을
12 Baker, A., Fluorescence excitation-emission matrix characterization of some sewage-impacted rivers, Environ. Sci. Technol., 35, pp. 948-953 (2001)   DOI   PUBMED   ScienceOn
13 Kwon, B., Lee, S., Cho, J., Ahn, H., Lee, D. and Shin, H., Biodegradability, DBP formation, and membrane fouling potentiol of natural organic matter: characterization and control lability, Environ. Sci. Technol., 39, pp. 732-739 (2005)   DOI   ScienceOn
14 노재순,손희종,박은주,황영도,신판세,강임석,주기재,고도정수처리 공정에서의 천연유기물질 특성변화 및 소독 부산물 전구물질의 제거특성 평가,대한환경공학회지,24(12), pp. 2075-2087 (2002)
15 Hur, J. and Schlautman, M. A., Using selected operational descriptors to examine the hetergeneity within abulk humic substance, Environ Sci. Technol., 37, pp. 880-887 (2003)   DOI   ScienceOn
16 Dennett, K. E., Amirtharajah, A., Moran, T. F. and Gould, J. P., Coagulation: Its effect on organic matter, Journal of American Water Works Association, 88(4), pp. 29-142 (1996)
17 Vuorio, E., Vahala, R., Rintala, J. and Laukkanen, R, The enaluation of drinking water treatment performed with HPSEC, Environment International, 24(5,6), pp. 17-623 (1998)
18 Jaffe, R., Boyer, J. N., Lu, X., Maie, N., Yang, C., Scully, N. M. and Mock, S., Source characterization of dissolved organic matter in a subtropical mangrove-dominated estuary by fluorescence analysis, Mar. Chem., 84, pp. 95-210 (2004)
19 Leenheer, J. A. and Croue, J. P., Characterizing aquatic dissolved organic matter, Environ. Sci. Technol., 37(1), pp. 18A-26A (2004)
20 Saadi, I. B., Armon, R. and Laor, Y., Monitoring of effluent DOM biodegradation using fluorescence, DV and DOC measurements, Chemosphere, 63, pp. 530-539 (2006)   DOI   ScienceOn