Removal of Phosphorus from Oyster Farm Mud Sediment Using a Photosynthetic Bacterium, Rhodobacter sphaeroides IL106
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概要
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Removal of phosphorous compounds from the mud sediment of an oyster farm was carried out by a series of bio-processes under anaerobic conditions. Anaerobic acidogenic fermentation of a mud sediment suspension (200 g wet wt/l artificial sea water) was initially carried out. With the addition of vitamins such as thiamine, nicotinic acid and biotin, acidogenic fermentation was enhanced to yield acetic acid of approximately 2g/l. Furthermore, approximately 20 mg/l of PO-<3-_4 (10% of total phosphorus on mud weight( and 5300 mg/l of COD_<Cr> (82% of organic matter on mud weight) were released into the culture broth after fermentation for 7 d. The supernatant of this culture broth was used to cultivate Rhodobacter sphaeroides IL106, a denitrifying photosynthetic bacterium. After 4 d, 3.32 g/l of biomass containing carotenoid and ubiquinone was obtained, and COD_<Cr> and acetic acid were reduced by 58% and 72%, respectively. In addition, PO^<3->_4 was reduced by 97%, suggesting that the removal of PO^<3->_4 from the mud sediment might be possible by combining anaerobic acidogenic fermentation with R.sphaeroides cultivation.
- 社団法人日本生物工学会の論文
- 1999-10-25
著者
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Watanabe M
Foods And Liquors Research Laboratories Kyowa Hakko Kogyo Co. Ltd.
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Nishio N
Department Of Molecular Biotechnology Graduate School Of Advanced Sciences Of Matter Hiroshima Unive
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Nishio Naomichi
Department Of Fermentation Technology Faculty Of Engineering Hiroshima University
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WATANABE MASANORI
Materials Science and Engineering, Graduate School of Engineering, Hiroshima Kokusai Gakuin Universi
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SASAKI KEN
Materials Science and Engineering, Graduate School of Engineering, Hiroshima Kokusai Gakuin Universi
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Watanabe M
Graduate School Of Engineering Hiroshima Kokusai Gakuin University
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Sasaki K
Graduate School Of Engineering Hiroshima Kokusai Gakuin University
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TAKENO KENJI
Department of Molecular Biotechnology, Graduate School of Advanced Sciences of Matter, Hiroshima Uni
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KANEYASU TADAYUKI
Association of Hiroshima Fisheries Industry Promotion
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TAKENO KENJI
Materials and Science Engineering, Hiroshima-Denki Institute of Technology
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Takeno Kenji
Materials And Science Engineering Hiroshima-denki Institute Of Technology
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Nishio Naomichi
Department Of Fermentation Technology Faculty Of Engineering Hiroshima Univeisity
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Sasaki Ken
Material Science And Engineering Graduate School Of Engineering
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Watanabe Masanori
Materials Science And Engineering Graduate School Of Engineering Hiroshima Kokusai Gakuin University
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