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	Isolation and characterization of thermophilic bacteria capable of lysing microbial cells in activated sludge
	Song, Yu-Dong ; Hu, Hong-Ying
	2010-05-10 ; 2010-05-10
会议名称	WATER SCIENCE AND TECHNOLOGY ; 5th World Water Congress of the International-Water-Association ; Beijing, PEOPLES R CHINA ; Web of Science
关键词	exoenzyme lysis sludge solubilization thermophilic bacteria waste activated sludge WASTE-WATER TREATMENT ANAEROBIC-DIGESTION AEROBIC-BACTERIA DISINTEGRATION PRETREATMENT REDUCTION DISRUPTION CULTURE ENZYMES SCALE Engineering, Environmental Environmental Sciences Water Resources
中文摘要	To find an efficient biological method to solubilize waste activated sludge (WAS) from the biological wastewater treatment process, several strains of thermophilic bacteria capable of solubilizing WAS were isolated from sewage sludge compost. The culture supernatants of the isolates were able to lyse vegetable bacterial cells and the lytic activity mainly came from the exoenzyme produced by the isolates. The culture supernatants of the different isolates showed different lysis characteristics. The factors affecting bacterial cell lysis were investigated using E coli as a model bacterium. The E coli cells were lysed easily at higher temperature (60 degrees C or 70 degrees C) while little lytic activity by the supernatants of isolates was observed at lower temperature (50 degrees C). The level of pH also had great influence on the lysis of E coli cells. The E coli cells in the early stationary growth phase were easier to lyse than those in the late stationary growth phase or death phase.
会议录出版者	I W A PUBLISHING ; LONDON ; ALLIANCE HOUSE, 12 CAXTON ST, LONDON SW1H0QS, ENGLAND
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/18879]
专题	清华大学
推荐引用方式 GB/T 7714	Song, Yu-Dong,Hu, Hong-Ying. Isolation and characterization of thermophilic bacteria capable of lysing microbial cells in activated sludge[C]. 见:WATER SCIENCE AND TECHNOLOGY, 5th World Water Congress of the International-Water-Association, Beijing, PEOPLES R CHINA, Web of Science.

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