Development of chemical-free solid-liquid separation techniques for organic particles and its application to recycling of organic wastes

2021 Fiscal Year Final Research Report

• Project/Area Number: 19H04313
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 64030:Environmental materials and recycle technology-related
• 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)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 直流電場 / 多層傾斜板電極 / 旋回流濾過 / ケミカルフリー / 固液分離

Outline of Final Research Achievements

We developed novel chemical-free techniques in which organic particles with lower density and smaller particle size can be collected by using our developed slurry treatment device with multi-inclined electrodes and filtration device with spiral flow pattern. It was demonstrated that several kind of slurries, in which particles hardly settle, can be effectively thickened by optimizing the electrode arrangement and the conditions of the applied DC electric field for the slurry treatment device with multi-inclined electrode. Besides, for filtration device with spiral flow pattern, it was found that the particles with a certain size range can be selectively collected and the concentrated slurry including only the particles with a certain size range can be obtained.

Free Research Field

化学工学、粉体工学

Academic Significance and Societal Importance of the Research Achievements

多層傾斜板電極付きスラリー槽による粒子凝集・分離技術が有機系微粒子を含むスラリーにも適用可能であることが示され、ケミカルフリーで有機系微粒子を効率よく回収し資源として有効利用できる可能性が高まった。旋回流濾過装置による濃縮技術についても有機系微粒子を含むスラリーに適用可能であることが示され、さらに、特定サイズの粒子のみを回収できる分級効果も示され、回収粒子の高付加価値化の可能性も示された。