Combined use of ionizing radiation and solid-phase extraction for water treatment

• Project/Area Number: 15K06674
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nuclear engineering
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: Kumagai Yuta 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力基礎工学研究センター, 研究職 (70455294)
• Co-Investigator(Renkei-kenkyūsha): KIMURA Atsushi 国立研究開発法人量子科学技術研究開発機構, 高崎量子応用研究所・先端機能材料研究部, 主幹研究員 (60465979)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2017: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000); Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2015: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
• Keywords: ゼオライト / 有機塩素化合物 / 放射線分解 / 吸着 / 芳香族塩素化合物 / 放射線利用 / 有機物分解 / 固相抽出

Outline of Final Research Achievements

We studied effect of adsorption and condensation by zeolites on radiation-induced degradation of chlorinated aromatic compounds. This study aims to demonstrate that the solid-phase extraction using zeolites has potential for improving the efficiency of radiolytic treatments of aqueous organic pollutants. Among three zeolites examined in this study, a mordenite type zeolite (HMOR) that has a high Si to Al ratio exhibited high performance as the matrix for the degradation of chlorinated aromatics. The irradiation of HMOR induced degradation of adsorbed chlorinated aromatics and produced chloride ion. We found a significant increase in chloride ion production by HMOR. The increased chloride ion production indicates that the high concentration of adsorbed 2-ClPh led to effective use of the adsorbed energy of HMOR.

Research Products

• [Journal Article] Radiation-induced degradation of aqueous 2-chlorophenol assisted by zeolites (2018)
  • Author(s): Kumagai Yuta、Kimura Atsushi、Taguchi Mitsumasa、Watanabe Masayuki
  • Journal Title: Journal of Radioanalytical and Nuclear Chemistry Volume: 316 Issue: 1 Pages: 341-348
  • DOI: 10.1007/s10967-018-5762-z
  • Peer Reviewed
• [Journal Article] Hydrogen Production by γ-Ray Irradiation from Different Types of Zeolites in Aqueous Solution (2017)
  • Author(s): Kumagai Yuta、Kimura Atsushi、Taguchi Mitsumasa、Watanabe Masayuki
  • Journal Title: The Journal of Physical Chemistry C Volume: 121 Issue: 34 Pages: 18525-18533
  • DOI: 10.1021/acs.jpcc.7b03532
  • Peer Reviewed
• [Journal Article] 固体と水との界面での放射線化学 (2017)
  • Author(s): 熊谷友多
  • Journal Title: Radioisotopes Volume: 印刷中
  • Peer Reviewed
• [Presentation] ゼオライト-水混合物中での2-クロロフェノールの放射線分解反応 (2017)
  • Author(s): 熊谷友多，菅原敦，瀬川優佳里，渡邉雅之
  • Organizer: 第1回QST高崎研シンポジウム
  • Place of Presentation: 高崎量子応用研究所（群馬県高崎市）
  • Year and Date: 2017-01-26
• [Presentation] Hydrogen and hydrogen peroxide productions by g-irradiation of A-, X-, Y- and mordenite type zeolites in aqueous solution (2015)
  • Author(s): Y. Kumagai, A. Kimura, M. Taguchi
  • Organizer: 15th International Congress of Radiation Research
  • Place of Presentation: 国立京都国際会館（京都府京都市）
  • Year and Date: 2015-05-25
  • Int'l Joint Research