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94
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Title |
Higher Heating Value of Microalgae Obtained by Subculture using Anaerobic Digested Sludge Filtrate |
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Authors |
Yuji Okayasu, Yukiyo Yamasaki, Hiroyuki Shigemura |
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Ãø¼Ôɽµ(±Ñ) |
Public Works Research Institute |
Ãø¼Ô¶Ð̳Àè̾ |
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Office name |
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Key Words |
anaerobic digested sludge filtrate, partially cycling up-flow anaerobic packed bed reactor, microalgae subculture, higher heating value |
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Abstract |
Microalgae subculture under solar light condition was conducted using a solution obtained by diluting anaerobic digested sludge filtrate with effluent from a partially cycling up-flow anaerobic packed bed reactor. As a result, it was found that it is possible to convert almost all of the soluble phosphorus and nitrogen in the solution into suspended matters without any heating system in the period from March to November. Furthermore, the higher heating value of the freeze-dried suspended matters was measured to be 15 to 20 MJ/kg-DS, which was found to be comparable to that the dried product of sewage sludge |