Development of low-fouling membranes under various salt/pH conditions

• Project/Area Number: 25420812
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Properties in chemical engineering process/Transfer operation/Unit operation
• Research Institution: Kogakuin University
• Principal Investigator: AKAMATSU Kazuki 工学院大学, 先進工学部, 准教授 (50451795)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 膜 / ファウリング / 水処理 / 改質 / DSC / ＤＳＣ

Outline of Final Research Achievements

Fouling is a critical issue when membranes are used in wastewater treatment processes and in bioseparation processes because it drastically decreases membrane performances. This study aimed to develop membranes whose low-fouling properties were maintained under various salt/pH conditions. The most important points for this development was the choice of the polymers that don’t change their hydration structures under different salt/pH conditions, and one carboxybetaine polymer and one nonionic polymer were demonstrated to have such a characteristics. Furthermore the membranes modified with these polymers were successfully demonstrated to have excellent low-fouling properties by conducting filtration tests of aqueous solution containing organic materials under different salt/pH conditions.

Research Products

• [Journal Article] Effect of the composition of the copolymer of carboxybetaine and n-butylmethacrylate on low-fouling property of dynamically formed membrane (2013)
  • Author(s): K. Akamatsu et al,
  • Journal Title: Sep. Purif. Technol. Volume: 118 Pages: 463-469
  • DOI: 10.1016/j.seppur.2013.07.034
  • Peer Reviewed
• [Presentation] Integrated Intelligent Satellite System (IISS) for Regional Water Resources Utilization (2015)
  • Author(s): Kazuki Akamatsu, Shin-ichi Nakao
  • Organizer: World Engineering Conference and Convention 2015
  • Place of Presentation: Kyoto, Japan
  • Year and Date: 2015-12-01
  • Int'l Joint Research / Invited
• [Presentation] Development of low-fouling membranes grafted with poly(2-methoxyethylacrylate) by plasma graft polymerization method (2015)
  • Author(s): Kazuki Akamatsu, Takaaki Furue, Fang Han, Shin-ichi Nakao
  • Organizer: 2015 North American Membrane Society Meeting (25th NAMS Meeting)
  • Place of Presentation: Boston, Massachusetts, USA
  • Year and Date: 2015-06-01
  • Int'l Joint Research
• [Presentation] 水和構造に着目したファウリング防止膜の開発 (2014)
  • Author(s): 赤松憲樹、中尾真一
  • Organizer: 第63回高分子討論会
  • Place of Presentation: 長崎大学
  • Year and Date: 2014-09-24 – 2014-09-26
• [Presentation] A Facile Surface Modification Method for Obtaining Low-Fouling Properties Using Carboxybetaine-Based Polymers (2014)
  • Author(s): Kazuki Akamatsu, Keita Mitsumori, Akihiro Yoshino, Miyuki Okuyama, Keiko Yonemura, Shin-ichi Nakao
  • Organizer: The 10th International Congress on Membranes and Membrane Processes
  • Place of Presentation: Suzhou, China
  • Year and Date: 2014-07-20 – 2014-07-25
• [Presentation] Development of Low-Fouling Membranes; A novel Strategies Focused on Hydration Structures (2014)
  • Author(s): Kazuki Akamatsu
  • Organizer: Cutting-Edge Technologies of Wastewater Treatment and Water Reuse for Water Environment in Indonesia
  • Place of Presentation: Jakarta, Indonesia
  • Year and Date: 2014-06-05
  • Invited
• [Presentation] Low-fouling membranes modified with copolymers of carboxybetaine and n-butylmethacrylate using dynamic forming method (2013)
  • Author(s): K. Akamatsu et al,
  • Organizer: The 8th Conference of Aseanian Membrane Society
  • Place of Presentation: Xi'an, China
• [Presentation] Surface modification of ultrafiltration membranes with carboxybetaine-based polymers by dynamic forming method for obtaining low-fouling properties (2013)
  • Author(s): K. Akamatsu et al,
  • Organizer: The 7th IWA Specialized Membrane Technology Conference and Exibition for Water and Wastewater Treatment and Reuse
  • Place of Presentation: Tronto, Canada
• [Presentation] カルボキシメチルベタインポリマーの水和状態に塩が与える影響 (2013)
  • Author(s): 赤松憲樹ら
  • Organizer: 化学工学会第45回秋季大会
  • Place of Presentation: 岡山大学
• [Presentation] 低ファウリング性付与を実現する膜面改質ポリマーの水和構造 (2013)
  • Author(s): 赤松憲樹ら
  • Organizer: 膜シンポジウム2013
  • Place of Presentation: 京都府立医科大学
• [Presentation] 水和構造に着目した低ファウリング膜の開発
  • Author(s): 赤松憲樹
  • Organizer: 第30回ニューメンブレンテクノロジーシンポジウム2013
  • Place of Presentation: 三田NNホール
  • Invited
• [Book] ファウリングの原因と対策・抑制技術（第4 章第2 節 水のミクロ構造の理解に基づくファウリング抑制膜の開発） (2016)
  • Author(s): 赤松憲樹(分担執筆)
  • Total Pages: 8
  • Publisher: S&T出版