Evaluation of organic precursors removed by ozonation and GAC processes

P. C. Chiang, C. H. Liang, E. E. Chang

Research output: Contribution to journalArticle

Abstract

The purpose of this research is to investigate the effectiveness of pre-ozonation and the activated carbon process in removing three organic precursors and their disinfection by-products (DBPs) from water samples. These precursors include Humic Acid, p-Hydroxybenzoic Acid and Hydroquinone. Results from this research indicate that activated carbon with large pore size (GAC, F-400) was effective in adsorbing precursors with higher molecular weight and was ineffective in adsorbing low molecular weight precurssors (p-Hydroxybenzoic Acid and Hydroquinone). Since high molecular weight precursors were more attracted toward adsorption sites, this phenomena caused desorption of low molecular weight precursors and resulted in an increase of formation potential of total organic carbon (TOC) in the water stream.

Original languageEnglish
Pages (from-to)359-366
Number of pages8
JournalWater Supply
Volume17
Issue number3-4
Publication statusPublished - 1999

Fingerprint

Ozonization
Molecular weight
Activated carbon
activated carbon
Acids
Disinfection
acid
Organic carbon
disinfection
humic acid
total organic carbon
Pore size
Byproducts
Water
Desorption
desorption
adsorption
Adsorption
water
ozonation

Keywords

  • Disinfection by-products
  • GAC adsorption
  • Organic precursors
  • Preozonation

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Chiang, P. C., Liang, C. H., & Chang, E. E. (1999). Evaluation of organic precursors removed by ozonation and GAC processes. Water Supply, 17(3-4), 359-366.

Evaluation of organic precursors removed by ozonation and GAC processes. / Chiang, P. C.; Liang, C. H.; Chang, E. E.

In: Water Supply, Vol. 17, No. 3-4, 1999, p. 359-366.

Research output: Contribution to journalArticle

Chiang, PC, Liang, CH & Chang, EE 1999, 'Evaluation of organic precursors removed by ozonation and GAC processes', Water Supply, vol. 17, no. 3-4, pp. 359-366.
Chiang PC, Liang CH, Chang EE. Evaluation of organic precursors removed by ozonation and GAC processes. Water Supply. 1999;17(3-4):359-366.
Chiang, P. C. ; Liang, C. H. ; Chang, E. E. / Evaluation of organic precursors removed by ozonation and GAC processes. In: Water Supply. 1999 ; Vol. 17, No. 3-4. pp. 359-366.
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