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HERO ID
1668041
Reference Type
Journal Article
Title
Influence of oxidation on fulvic acids composition and biodegradability
Author(s)
Kozyatnyk, I; Swietlik, J; Raczyk-Stanisławiak, U; Dąbrowska, A; Klymenko, N; Nawrocki, J
Year
2013
Is Peer Reviewed?
Yes
Journal
Chemosphere
ISSN:
0045-6535
EISSN:
1879-1298
Volume
92
Issue
10
Page Numbers
1335-1342
Language
English
PMID
23746389
DOI
10.1016/j.chemosphere.2013.05.046
Web of Science Id
WOS:000323142000010
Abstract
Oxidation is well-known process of transforming natural organic matter during the treatment of drinking water. Chlorine, ozone, and chlorine dioxide are common oxidants used in water treatment technologies for this purpose. We studied the influence of different doses of these oxidants on by-products formation and changes in biodegradable dissolved organic carbon (BDOC) and molecular weight distribution (MWD) of fulvic acids (FA) with different BDOC content. Chlorination did not significantly change the MWD of FA and disinfection by-products formation. However, higher molecular weight compounds, than those in the initial FA, were formed. It could be a result of chlorine substitution into the FA structure. Chlorine dioxide oxidized FA stronger than chlorine. During ozonation of FA, we found the highest increase of BDOD due to the formation of a high amount of organic acids and aldehydes. FA molecules were transformed into a more biodegradable form. Ozonation is the most preferable process among those observed for pre-treatment of FA before biofiltration.
Keywords
Drinking water treatment; Natural organic matter; Ozone; Chlorine; Chlorine dioxide
Tags
NAAQS
•
ISA-Ozone (2020 Final Project Page)
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