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, Dong Seok
Jung, Young-Rim
Rhee,
D. S., &
Jung,
Y.
(2000). Characterization of Humic Acid in the Chemical Oxidation Technology(II) - Characteristics by Ozonation -. , 13(2), 241-249.
Abstract
In this paper, ozonation of humic acid in water was characterized using $UV_{254}$ absorbance, TOC, Ultra Filtration and $^{13}C-NMR$. 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 $UV_{254}$ 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 $^{13}C-NMR$ 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
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humic acid,
ozonation,
PFBOA method