Development of chemical-free particle flocculation technique and application for material recycle

• Project/Area Number: 23310053
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Environmental technology/Environmental materials
• Research Institution: Hosei University (2013); Nagoya University (2011-2012)
• Principal Investigator: MORI Takamasa 法政大学, 生命科学部, 准教授 (20345929)
• Co-Investigator(Kenkyū-buntansha): TSUBAKI Junichiro 名古屋産業科学研究所, 研究部, 研究員 (50109295)
• Project Period (FY): 2011-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥20,020,000 (Direct Cost: ¥15,400,000、Indirect Cost: ¥4,620,000); Fiscal Year 2013: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2012: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000); Fiscal Year 2011: ¥12,740,000 (Direct Cost: ¥9,800,000、Indirect Cost: ¥2,940,000)
• Keywords: ケミカルフリー / 電場 / 粒子凝集 / 直流電場 / 凝集 / 誘電分極 / スラリー / 造粒

Research Abstract

We developed a chemical-free particle aggregation method using electrical field. DC and AC electrical field were applied to aqueous alumina suspensions and the effects of conditions of the applied electrical field on the aggregation behavior of the suspensions were investigated. It was shown that the DC electrical field can be useful for particle aggregation and the aggregates size increased with applied voltage and time, while AC electrical field showed no remarkable effect on the aggregation phenomenon. It was also found that decreasing the electrode distance should be effective to enhance the particle aggregation rather than increasing the applied voltage because too high voltage causes the increase in the suspension temperature and gas amount produced by electrolysis.

Research Products

• [Journal Article] 凝集剤を使用しないケミカルフリーな液中微粒子凝集技術 (2012)
  • Author(s): 森隆昌, 椿淳一郎
  • Journal Title: ケミカルエンジニヤリング Volume: 57 Pages: 782-786
  • Peer Reviewed
• [Presentation] Development of a chemical-free flocculation method for fine particles in aqueous suspensions by using DC field (2014)
  • Author(s): Takamasa Mori, Yusuke Era and J. Tsubaki
  • Organizer: CHISA2014
  • Place of Presentation: Clarlon Congress Hotel Prague
• [Presentation] 直流電場を利用した粒子凝集技術の開発と資源リサイクルへの応用 (2014)
  • Author(s): 江良勇亮, 常磐定輝, 森隆昌, 椿淳一郎
  • Organizer: 分離技術会
  • Place of Presentation: 名古屋大学東山キャンパス
• [Presentation] 直流電場を利用した粒子凝集技術の開発 (2014)
  • Author(s): 森隆昌, 江良勇亮, 椿淳一郎
  • Organizer: 化学工学会第79年会
  • Place of Presentation: 岐阜大学,柳戸キャンパス
• [Presentation] 直流電場を利用した液中微粒子凝集技術の開発 (2014)
  • Author(s): 森 隆昌，江良 勇亮，椿 淳一郎
  • Organizer: 化学工学会第79年会
  • Place of Presentation: 岐阜大学，柳戸キャンパス
• [Presentation] 直流電場を利用した液中微粒子凝集技術の開発と資源リサイクルへの応用 (2014)
  • Author(s): 江良 勇亮，常磐 定輝，森 隆昌，椿 淳一郎
  • Organizer: 分離技術会
  • Place of Presentation: 名古屋大学，東山キャンパス
• [Presentation] Development of a chemical-free flocculation method for fine particles in aqueous suspensions by using DC field (2014)
  • Author(s): Mori T., Era Y., Kiguchi T., Tsubaki J.
  • Organizer: CHISA2014
  • Place of Presentation: Clarion Congress Hotel Prague
• [Presentation] 電場を利用した液中微粒子のケミカルフリー造粒技術の開発 (2012)
  • Author(s): 平松直比古, 森隆昌, 椿淳一郎
  • Organizer: 粉体工学会2012年度 秋期研究発表会
  • Place of Presentation: 東京ビッグサイト会議棟
• [Presentation] 電場を利用した液中微粒子のケミカルフリー造粒技術の開発 (2012)
  • Author(s): 平松直比古
  • Organizer: 粉体工学会２０１２年度 秋期研究発表会
  • Place of Presentation: 東京ビッグサイト会議棟
• [Presentation] ケミカルフリー造粒でコンタミレス (2011)
  • Author(s): 森 隆昌
  • Organizer: 国際粉体工業展 2011
  • Place of Presentation: 大阪アカデミア
  • Year and Date: 2011-11-20
• [Presentation] ケミカルフリー造粒でコンタミレス (2011)
  • Author(s): 森隆昌
  • Organizer: 国際粉体工業展2011
  • Place of Presentation: 大阪アカデミア(大阪府)
  • Year and Date: 2011-10-20
• [Patent(Industrial Property Rights)] 粒子凝集分離回収装置及び粒子凝集分離回収方法 (2012)
  • Inventor(s): 森隆昌,椿淳一郎
  • Industrial Property Rights Holder: 山田克彦
  • Industrial Property Rights Type: 特許
  • Filing Date: 2012-12-28
• [Patent(Industrial Property Rights)] 粒子凝集分離回収装置及び粒子凝集分離回収方法 (2012)
  • Inventor(s): 森隆昌，椿淳一郎
  • Industrial Property Rights Holder: 山田克彦
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2012-289109
  • Filing Date: 2012-12-28