Decomposition of humic acid and reduction of trihalomethane formation potential in water by ozone with u.v. irradiation

Katsuki Kusakabe, Shinji Aso, Jun Ichiro Hayashi, Kazuaki Isomura, Shigeharu Morooka

研究成果: Contribution to journalArticle査読

45 被引用数 (Scopus)

抄録

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.

本文言語英語
ページ(範囲)781-785
ページ数5
ジャーナルWater Research
24
6
DOI
出版ステータス出版済み - 6 1990

All Science Journal Classification (ASJC) codes

  • 生態モデリング
  • 水の科学と技術
  • 廃棄物管理と処理
  • 汚染

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