Development of a phosphate-removal system using a marine photosynthetic bacterium Chromatium sp. |
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Authors: | H Sudo A Yamada K Kokatsu N Nakamura T Matsunaga |
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Institution: | (1) Department of Biotechnology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184, Japan, JP |
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Abstract: | The marine photosynthetic bacterium Chromatium sp. successfully removed orthophosphate when grown phototrophically. The phosphate-uptake rate was almost constant at more
than 5.0 mg- PO4
3−/l in synthetic medium. Addition of seawater causes flocculation of this strain. The successful use of seawater as an inexpensive
source of magnesium could prove to be effective in the removal of photosynthetic bacterial cells from a medium. A semicontinuous
culture system was used for the removal of low concentrations of phosphate and the phosphate-uptake activity of Chromatium sp. was maintained under 0.1 day−1 dilution rate. This strain was also able to remove high concentrations of phosphate from domestic sewage.
Received 24 May 1996 / Received revision: 5 August 1996 / Accepted: 6 September 1996 |
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