Abstract
Humic acids dissolved in water are decomposed by ozone under u.v. irradiation at pH 6.9. The decomposition rate of the total organic carbon (TOC) is obtained as functions of the u.v. intensity and the residual ozone concentration, assuming the reaction obeys first order kinetics with respect to reactive TOC concentration. Major final products are acetic acid, formic acid and oxalic acid, which are refractory to ozonation and are no longer precursors of trihalomethanes. The amount of chloroform and total organic chlorides generated by chlorination are drastically decreased by u.v. irradiation. No increase in the trihalomethane formation potential is observed in the course of u.v. ozonation.
| Original language | English |
|---|---|
| Pages (from-to) | 781-785 |
| Number of pages | 5 |
| Journal | Water Research |
| Volume | 24 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jun 1990 |
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All Science Journal Classification (ASJC) codes
- Ecological Modelling
- Water Science and Technology
- Waste Management and Disposal
- Pollution
Cite this
Decomposition of humic acid and reduction of trihalomethane formation potential in water by ozone with u.v. irradiation. / Kusakabe, Katsuki; Aso, Shinji; Hayashi, Jun Ichiro; Isomura, Kazuaki; Morooka, Shigeharu.
In: Water Research, Vol. 24, No. 6, 06.1990, p. 781-785.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Decomposition of humic acid and reduction of trihalomethane formation potential in water by ozone with u.v. irradiation
AU - Kusakabe, Katsuki
AU - Aso, Shinji
AU - Hayashi, Jun Ichiro
AU - Isomura, Kazuaki
AU - Morooka, Shigeharu
PY - 1990/6
Y1 - 1990/6
N2 - Humic acids dissolved in water are decomposed by ozone under u.v. irradiation at pH 6.9. The decomposition rate of the total organic carbon (TOC) is obtained as functions of the u.v. intensity and the residual ozone concentration, assuming the reaction obeys first order kinetics with respect to reactive TOC concentration. Major final products are acetic acid, formic acid and oxalic acid, which are refractory to ozonation and are no longer precursors of trihalomethanes. The amount of chloroform and total organic chlorides generated by chlorination are drastically decreased by u.v. irradiation. No increase in the trihalomethane formation potential is observed in the course of u.v. ozonation.
AB - Humic acids dissolved in water are decomposed by ozone under u.v. irradiation at pH 6.9. The decomposition rate of the total organic carbon (TOC) is obtained as functions of the u.v. intensity and the residual ozone concentration, assuming the reaction obeys first order kinetics with respect to reactive TOC concentration. Major final products are acetic acid, formic acid and oxalic acid, which are refractory to ozonation and are no longer precursors of trihalomethanes. The amount of chloroform and total organic chlorides generated by chlorination are drastically decreased by u.v. irradiation. No increase in the trihalomethane formation potential is observed in the course of u.v. ozonation.
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U2 - 10.1016/0043-1354(90)90036-6
DO - 10.1016/0043-1354(90)90036-6
M3 - Article
AN - SCOPUS:0025439667
VL - 24
SP - 781
EP - 785
JO - Water Research
JF - Water Research
SN - 0043-1354
IS - 6
ER -