Flocculation behavior of Sphingobium chlorophenolicum in degrading pentachlorophenol at different life stages

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題名:	Flocculation behavior of Sphingobium chlorophenolicum in degrading pentachlorophenol at different life stages
作者:	Chang, Y.-I., Su, C.-Y.
貢獻者:	Dept. of Chemical Engineering, Tunghai University
關鍵詞:	Biodegradation;DLVO theory;Pentachlorophenol;Sphingobium chlorophenolicum;Stability ratio
日期:	2003
上傳時間:	2013-04-24T07:13:52Z (UTC)
摘要:	The cell flocculation behavior of degrading pentachlorophenol (PCP) by using Sphingobium chlorophenolicum (Flavobacterium sp., ATCC 39723) is investigated in the present paper. It is found that these Sphingobium cells can efficiently degrade PCP when the concentration of this toxic compound is below 150 ppm. These degradation rates of PCP can be facilitated with the additions of three supplementary carbons: glutamate (4.0 g/L), glucose (3.2 g/L), and cellobiose (3.05 g/L), among which the highest specific growth rate of cells is obtained when glucose is added. More importantly, in these biodegradation experiments described herein, in order to investigate the cell flocculation behavior, the temporal variations of cell size, zeta potential, and stability ratio of the cell suspension are also measured. It is found that, no matter what kind of supplementary carbon source is added, the highest stability ratio of the cell suspension can be always obtained at the end of the exponential growth phase, which can be well explained by using the results of cell size and zeta potential measurements according to the DLVO theory. ? 2003 Wiley Periodicals, Inc.
關聯:	Biotechnology and Bioengineering 82 (7) , pp. 843-850
顯示於類別:	[化學工程與材料工程學系所] 期刊論文

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