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論文投稿 Microalgae cultured by sewage and organic constituents

作成年度 2013 年度
論文名 Microalgae cultured by sewage and organic constituents
論文名(和訳)
論文副題
発表会
誌名 Chemosphere
巻・号・回 93(7)
発表年月日 2013/10/01
所属研究室/機関名 著者名(英名)
Recycling Research TeamKenichiro Inoue
Recycling Research TeamTsutomu Uchida
抄録
The microalgae could be multiplied by supplying only sewage influent or effluent without any additional microalgal stock or nutrient salt. In a semicontinuous culture, the N:P weight ratios consumed were 14:1 and 18:1 for the sewage influent and effluent, respectively. The total cell number and green algae ratio of microalgae cultivated by semicontinuous culture exceeded those of batch culture. No cyanobacterial cells were observed in the semicontinuous culture using the sewage effluent. The organic components in the cultured microalgae using sewage effluent, eluted by n-hexane, were determined. The ratio of unsaturated fatty acid exceeded that of saturated fatty acid, which was possibly attributable to the fluidity of the cell membrane. The squalene was also obtained by the culture using sewage alone, free of any external stock or nutrient salt. The higher heating value of the microalgae of semicontinuous culture using the sewage influent was 25 MJ kg?1, corresponding to the heating value of lignite and showing the potential of the sewage culture microalgae as a means of power generation and combustion aid.
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