https://scholars.lib.ntu.edu.tw/handle/123456789/407775
標題: | Effects of aeration intensity on formation of phenol-fed aerobic granules and extracellular polymeric substances | 作者: | Adav S.S. Lee D.-J. Lai J.Y. |
關鍵字: | Aeration;EPS;Filaments;Granule formation | 公開日期: | 2007 | 卷: | 77 | 期: | 1 | 起(迄)頁: | 175-182 | 來源出版物: | Applied Microbiology and Biotechnology | 摘要: | Effect of air aeration intensities on granule formation and extracellular polymeric substances content in three identical sequential batch reactors were investigated. The excitation-emission-matrix spectra and multiple staining and confocal laser scanning microscope revealed proteins, polysaccharides, lipids, and humic substances in the sludge and granule samples. Seed sludge flocs were compacted at low aeration rate, with produced extracellular polymeric substances of 50.2-76.7 mg g-1 of proteins, 50.2-77.3 mg g-1 carbohydrates and 74 mg g-1 humic substances. High aeration rate accelerated formation of 1.0-1.5 mm granules with smooth outer surface. The corresponding quantities of extracellular polymeric substances were 309-537 mg g-1 of proteins, 61-109 mg g-1 carbohydrates, 49-92 mg g-1 humic substances, and 49-68 mg g-1 lipids. Intermediate aeration rate produced 3.0-3.5 mm granules with surface filaments. Reactor failure occurred with overgrowth of filaments, probably owing to the deficiency of nutrient in liquid phase. No correlation was noted between extracellular polymeric substances composition and the proliferation of filamentous microorganisms on granule surface. ? 2007 Springer-Verlag. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/407775 | ISSN: | 01757598 | DOI: | 10.1007/s00253-007-1125-3 |
顯示於: | 化學工程學系 |
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