A study on factors influencing kinetic threshold concentration of organics biodegradation
Threshold concentration (Smin)is termed the minimum substrate concentration of biodegradation oforganic pollutants，which is significant in the removal of trace organic compounds for these compounds can not beeliminated from environment effectively by traditional biological techniques. But the value of Smin is not constant,and is influenced by many factors，such as the characteristic of organic matter，species of microorganism,environment condition and biodegradation pathway. Several factors influencing Smin were studied in this paper,including substrate concentration，organism culture mode，and additional carbon source. The results indicated thatthe lower the substrate concentration is，the lower the Smin value is，and vice versa. The Smin value of continuousculture is lower than that of batch culture，and the former is more suitable to enrich organism degrading traceorganic compounds. The else carbon source (glucose)weakens the affinity of ceils for catabolic objectivecompounds，which is disadvantage to reach lower Smin value.
Threshold concentration Kinetic Influencing factors organics biodegradation
Li Juanying Zhao Qingxiang Jiang Min
Key Laboratory of Aquatic Genetic Resources and Aquaculmral Ecology Certificated by the Ministry of Dept. of Environmental Engineering, East China University of Science and Technology,Shanghai 200237
国内会议
全国水体污染控制、生态修复技术与水环境保护的生态补偿建设交流研讨会
上海
英文
12-18
2008-04-25（万方平台首次上网日期，不代表论文的发表时间）