Zero-energy seawater desalination based on development of draw solutions for forward osmosis

2015 Fiscal Year Final Research Report

• Project/Area Number: 26630392
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Properties in chemical engineering process/Transfer operation/Unit operation
• Research Institution: Kobe University
• Principal Investigator: Matsuyama Hideto 神戸大学, 工学(系)研究科(研究院), 教授 (50181798)
• Co-Investigator(Kenkyū-buntansha): KAMIO Eiji 神戸大学, 大学院工学研究科, 助教 (30382237) ; TAKAHASHI Tomoki 神戸大学, 大学院工学研究科, 特命助教 (80535518) ; MIYOSHI Taro 神戸大学, 大学院工学研究科, 特命助教 (80587791) ; SAEKI Daisuke 神戸大学, 大学院工学研究科, 特命助教 (70633832) ; YASUKAWA Masahiro 神戸大学, 大学院工学研究科, 特命助教 (20647309) ; MINO Yasushi 神戸大学, 大学院工学研究科, 特命助教 (70709922)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 正浸透法 / 駆動溶液 / 海水淡水化 / 浸透圧 / 磁性粒子 / 温度応答性高分子

Outline of Final Research Achievements

Magnetic nanoparticles having high osmotic pressure were developed for seawater desalination by forward osmosis. Fabricated functional particles as draw solute showed performance of two-thirds in comparison with the osmotic pressure of seawater. This magnetic particles showed good dispersibility more than ten times after regeneration using magnetic force. Moreover, various polyamine derivatives were developed as draw solutes. These polymer solutions showed the high osmotic pressure and phase transition behavior of the lower critical solution temperature type. Therefore, this draw solute can be regenerated by low-grade heat.
Furthermore, the flux model equation which can predict the FO flux using by various draw solutes was also proposed in this work.

Free Research Field

膜工学