Paper Title:
Effects of AOC and Phosphorus on Bacterial Growth under Oligotrophic Condition (2)
  Abstract

The effects of phosphorus and organic carbon on bacterial growth were investigated in the laboratory. The bacteria sampled from the drinking water network of Tianjin were inoculated into water samples with different content of phosphorus (0~15µg PO43--P/L) and assimilable organic carbon (10~200µgAOC/L). The inoculated water samples were incubated at 20°C. Bacterial growth was monitored in every 2 days in the beginning of cultivation and in every 4 days or more in the later of the cultivation. Results showed that Phosphorus had obvious promotion on bacterial growth, which included shortening the lag phase evidently, increasing the growth rate and the maximum cell count in stationary phase. Carbon can only increase bacterial number. Under oligotrophic condition,when ratio of AOC: P in nutrients of water was more than 100:5, phosphorus was the limiting factor of bacterial growth. The bacterial yield factors against phosphorus and AOC were 1.1×109CFU/µgP and 9.0×107CFU/µgAOC respectively. Phosphorus was more sensitive than AOC. When the phosphorus concentration was less than 0.7µg/L in water samples, it was very difficult for bacteria to obtain phosphorus, and then growth of bacteria was very slowly or in lag phase in the first nine days of incubation time. In drinking water with low concentration of phosphorus (<0.7µg/L) and disinfectants, bacterial regrowth may be controlled. The paper will be Narrated in two parts, “Effects of AOC and Phosphorus on Bacterial Growth under Oligotrophic Condition (1)” and “Effects of AOC and Phosphorus on Bacterial Growth under Oligotrophic Condition (2)”.

  Info
Periodical
Chapter
Chapter 3: Chemical and Biomedical Engineering
Edited by
Honghua Tan
Pages
988-994
DOI
10.4028/www.scientific.net/AMM.138-139.988
Citation
D. L. Jiang, Y. M. Zhang, G. W. Ni, "Effects of AOC and Phosphorus on Bacterial Growth under Oligotrophic Condition (2)", Applied Mechanics and Materials, Vols. 138-139, pp. 988-994, 2012
Online since
November 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Lu Chen, Meng Hui Wang, Rui Bao Jia, Li Li
Chapter 9: Water Supply and Drainage Engineering
Abstract:In this study, the indicators assimilable organic carbon (AOC), dissolved organic carbon (DOC), heterotrophic plate counts (HPC) and...
2109
Authors: Deng Ling Jiang, Guo Wei Ni, Yan Hua Chen, Qing Jie Zhu
Chapter 16: Biomedical Manufacturing
Abstract:The content of assimilable organic carbon (AOC) has been proposed to control the growth of heterotrophic microbe in drinking water...
4031
Authors: Deng Ling Jiang, Guo Wei Ni, Yu Min Zhang
Chapter 3: Chemical and Biomedical Engineering
Abstract:The effects of phosphorus and organic carbon on bacterial growth were investigated in the laboratory. The bacteria sampled from the drinking...
981
Authors: Deng Ling Jiang, Xiao Liu, Guo Wei Ni
Chapter 4: New Materials, Applications and Processes
Abstract:Relation between AOC concentration and bacterium regrowth in drinking water network was investigated to obtain biostability criteria....
440
Authors: Deng Ling Jiang, Yu Min Zhang, Ning Zheng
Chapter 4: New Materials, Applications and Processes
Abstract:Phosphorus limitation on bacterial regrowth was studied in source water, water treatment process and water distribution system of J Water...
466