Polyphosphate accumulating bacteria are salt-tolerant? Biological phosphate recovery from seawater and brackish water

• Project/Area Number: 26630246
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Civil and environmental engineering
• Research Institution: Hiroshima University
• Principal Investigator: OHASHI AKIYOSHI 広島大学, 工学(系)研究科(研究院), 教授 (70169035)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: リン / 資源回収 / ポリリン酸蓄積細菌 / 海水・淡水 / バイオリアクター / ポリリン蓄積細菌 / 海水・汽水

Outline of Final Research Achievements

This study revealed the relationship between the clades of polyphosphate accumulating bacteria (PAOs), which are rich in diversity depending on salinity, and favorable environment conditions of the respective clades. The diverse PAOs were successfully cultivated by a DHS reactor under different salinity conditions, suggesting that it is possible to recover polyphosphate as concentrated solution from not only wastewaters but also seawater and brackish water.

Research Products

• [Journal Article] Biological oxidation of Mn(II) coupled with nitrification for removal and recovery of minor metals by downflow hanging sponge reactor. (2015)
  • Author(s): Linh Thi Thuy Cao, Hiroya Kodera, Kenichi Abe, Hiroyuki Imachi, Yoshiteru Aoi, Tomonori Kindaichi, Noriatsu Ozaki, Akiyoshi Ohashi.
  • Journal Title: Water Research Volume: 68 Pages: 545-553
  • DOI: 10.1016/j.watres.2014.10.002
  • Peer Reviewed / Open Access
• [Presentation] 淡水・海水・汽水環境に生息する多様なポリリン酸蓄積細菌の分類 (2016)
  • Author(s): 長井 洋亮, 金田一 智規, 尾崎 則篤, 大橋 晶良
  • Organizer: 第50回日本水環境学会年会
  • Place of Presentation: アスティとくしま(徳島県徳島市)
  • Year and Date: 2016-03-16
• [Presentation] 淡水・海水・汽水域 Accumulibacterが好む環境は？ (2015)
  • Author(s): 小寺 博也, 金田一 智規, 大橋 晶良
  • Organizer: 第30回日本微生物生態学会大会
  • Place of Presentation: 土浦亀城プラザ(茨城県土浦市)
  • Year and Date: 2015-10-17
• [Presentation] ポリリン酸蓄積細菌は淡水・海水・汽水域のどの環境を好むか？ (2015)
  • Author(s): 長井 洋亮、小寺 博也、金田一 智規、尾崎則篤、大橋 晶良
  • Organizer: 第49回日本水環境学会年会
  • Place of Presentation: 金沢大学
  • Year and Date: 2015-03-16 – 2015-03-18
• [Presentation] 基質親和性に基づいたポリリン酸蓄積細菌の多様性と競合関係 (2015)
  • Author(s): 小寺 博也、金田一 智規、尾崎 則篤、大橋 晶良
  • Organizer: 第49回日本水環境学会年会
  • Place of Presentation: 金沢大学
  • Year and Date: 2015-03-16 – 2015-03-18
• [Presentation] 自然界に生存するポリリン酸蓄積細菌の多様性 (2014)
  • Author(s): 長井 洋亮・小寺 博也・金田一 智規・尾崎 則篤・大橋 晶良
  • Organizer: 第66回平成25年度土木学会中国支部研究発表
  • Place of Presentation: 鳥取大学
  • Year and Date: 2014-05-31