| Title |
Characteristics of Biodegradation of Organic Matters in the Nakdong River Watershed |
| Authors |
김정선 ( Jung Sun Kim ) ; 강임석 ( Lim Seok Kang ) |
| DOI |
https://doi.org/10.15681/KSWE.2014.30.6.605 |
| Keywords |
Biodegradation; Hydrophilic; Hydrophobic; Organic matters; SUVA |
| Abstract |
This research was carried out to examine the concentration and fate of dissolved organic matter due to the increased detention time in middle and down stream of the Nakdong River. Aldo the characteristics of biodegradation of DOM were investigated according to the various water sources. The approaches used to characterize DOM biodegradability include the changes in DOC concentration and DOM fraction. Long-term biodegradation test for each organic source was also conducted. As the result, maximum 50% of DOC was reduced during the first 30 days of biodegradation tests. After 30 days, biodegradation of organic matter was continuously progressed, as showing continuous reduction of DOC. While DOC concentration was reduced, SUVA values for the organic matters were increased. Properties of dissolved organic matter by water sources also showed decreasing hydrophilic components while showing increased hydrophobic components. The more rapid reduction of the hydrophilic components than hydrophobic components might be due to the preferential degradation of the hydrophilic components by microorganisms during biodegradation process. |