Bacteria and picophytoplankton can be decomposed by chlorine in disinfection process of drinking water treatment, and organic matters released from them would contribute to assimilable organic carbon (AOC). Therefore, the specific AOC formation potential of each picoplankton, i.e. bacteria and picophytoplankton, in the chlorination were evaluated and compared in this research. The nutrient state of bacteria affects onto its specific AOC formation potential. The specific AOC formation potential of bacteria starved, which expected to be similar state to natural bacteria in a reservoir, was 0.8 × 10−13 g/cell. It was half of that of bacteria in the logarithmic growth phase. The difference of specific AOC formation potential of bacteria between in the logarithmic growth phase and in the starving condition would be caused by the amount of cellular organic carbons. The specific AOC formation potential of picophytoplankton was 6.4 × 10−13 g/cell, and 8 times higher than that of bacteria starved. The AOC formed by chlorination of picoplankton should be considered for AOC control in summer season when both bacteria and picophytoplankton multiply.
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Research Article|
August 01 2009
Production of assimilable organic carbon (AOC) from bacteria and picophytoplankton by chlorination Available to Purchase
Tetsuji Okuda;
1Environmental Research and Management Center, Hiroshima University, Hiroshima 739-8513, Japan
E-mail: [email protected]
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Yuki Uehara;
Yuki Uehara
2Graduate School of Engineering, Hiroshima University, Hiroshima, Japan
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Tsung-Yueh Tsai;
Tsung-Yueh Tsai
1Environmental Research and Management Center, Hiroshima University, Hiroshima 739-8513, Japan
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Satoshi Nakai;
Satoshi Nakai
2Graduate School of Engineering, Hiroshima University, Hiroshima, Japan
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Michihiro Akiba;
Michihiro Akiba
3Department of Water Supply Engineering, National Institute of Public Health, Tokyo, Japan
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Wataru Nishijima;
Wataru Nishijima
1Environmental Research and Management Center, Hiroshima University, Hiroshima 739-8513, Japan
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Mitsumasa Okada
Mitsumasa Okada
2Graduate School of Engineering, Hiroshima University, Hiroshima, Japan
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Water Supply (2009) 9 (3): 337–342.
Citation
Tetsuji Okuda, Yuki Uehara, Tsung-Yueh Tsai, Satoshi Nakai, Michihiro Akiba, Wataru Nishijima, Mitsumasa Okada; Production of assimilable organic carbon (AOC) from bacteria and picophytoplankton by chlorination. Water Supply 1 August 2009; 9 (3): 337–342. doi: https://doi.org/10.2166/ws.2009.322
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