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Characterization of Humic Acid in the Chemical Oxidation Technology(II) - Characteristics by Ozonation -
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2000, v.13 no.2, pp.241-249
Rhee,
D. S., &
Jung,
Y.
(2000). Characterization of Humic Acid in the Chemical Oxidation Technology(II) - Characteristics by Ozonation -. Analytical Science and Technology, 13(2), 241-249.
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Abstract
In this paper, ozonation of humic acid in water was characterized using <TEX>$UV_{254}$</TEX> absorbance, TOC, Ultra Filtration and <TEX>$^{13}C-NMR$</TEX>. Also, carbonyl compounds in ozonated water were analyzed by GC/MS using PFBOA method. Ozonation by-products of water containing humic acid were determined as formaldehyde, acetaldehyde, acetone, glyoxal and methylglyoxal. Results of <TEX>$UV_{254}$</TEX> absorbance and TOC with ozonation time at humic acid 20, 100ppm represent that decrease rate of 80% within ozonation time is 20 min and TOC removal rate of 40-50% within ozonation time is 30 min. Results for <TEX>$^{13}C-NMR$</TEX> and Ultra Filtration, humic acid of high molecular weight by ozonation are oxidated and decomposed so that it was conversed low molecular weight such as aldehydes, carboxylic acid.
- keywords
- humic acid, ozonation, PFBOA method
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