Systematization of fine powder separation techniques without chemical additives by controlling field and their application to advanced separation processes

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H02849
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Environmental conscious materials and recycle
• Research Institution: Hosei University
• Principal Investigator: MORI Takamasa 法政大学, 生命科学部, 教授 (20345929)
• Co-Investigator(Kenkyū-buntansha): 佐藤根 大士 兵庫県立大学, 工学研究科, 准教授 (00583709) ; 椿 淳一郎 公益財団法人名古屋産業科学研究所, 研究部, 上席研究員 (50109295)
• Research Collaborator: ERA Yusuke ; NAGASHIMA Hirotaka ; ITO Yu
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 固液分離 / 凝集 / ケミカルフリー / 無薬注 / 電場 / 電気二重層

Outline of Final Research Achievements

A novel solid-liquid separation device has been developed by using flocculation effect of DC electric field and Boycott effect, enabling flocculation of fine particles in water without chemical additives. Clear supernatant, that is, water without suspended solids, can be collected continuously, supplying slurry at a constant rate. This means that the developed device can make fine particles in water flocculated continuously. It was demonstrated that the flocculation of fine particles in water by DC electric field should be due to electrostatic attraction force between particles, caused by deformation of electrical double layer around particles. In addition, a novel cross flow filtration device has been developed in which filtrate flows toward the opposite direction to particles, enabling more effective cake less filtration.

Free Research Field

化学工学、粉体工学