Tokunaga Kohei 徳永紘平

Researcher Number	50814729
Other IDs
Affiliation (Current)	2025: 国立研究開発法人日本原子力研究開発機構, 人形峠環境技術センター, 研究職
Affiliation (based on the past Project Information) *help	2019 – 2024: 国立研究開発法人日本原子力研究開発機構, 核燃料・バックエンド研究開発部門人形峠環境技術センター, 研究職
Review Section/Research Field	Principal Investigator Basic Section 31010:Nuclear engineering-related Except Principal Investigator Basic Section 41050:Environmental agriculture-related / Basic Section 64010:Environmental load and risk assessment-related
Keywords	Principal Investigator XAFS / Goethite / Siderite / Uranium / Arsenic / ferrihydrite / goethite / siderite / arsenic / uranium … More / adsorption / 陰イオン / ジオポリマー / 吸着XAFS / リン / セレン / ヨウ素 / 吸着 / 共沈 / リン酸イオン / 亜セレン酸 / セレン酸 / ヨウ素酸 / バライト … More Except Principal Investigator 土壌修復 / 微生物 / 水田 / ヒ素 / 放射性セシウム / 福島 / 色素 / 濃集 / 溶出 / 土壌 / きのこ / セシウム / 福島第一原子力発電所事故 Less

Investigation of complex factors controlling arsenic accumulation in surface paddy soils and its application to nature-mimetic soil remediation
- Principal Investigator
  
  光延聖
- Project Period (FY)
  2023 – 2026
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 41050:Environmental agriculture-related
- Research Institution
  Ehime University
Migration of arsenic and uranium in environments during iron transformationPrincipal Investigator
- Principal Investigator
  
  徳永紘平
- Project Period (FY)
  2023 – 2024
- Research Category
  
  Grant-in-Aid for Early-Career Scientists
- Review Section
  
  Basic Section 31010:Nuclear engineering-related
- Research Institution
  Japan Atomic Energy Agency
Elucidation of
- Principal Investigator
  
  Kozai Naofumi
- Project Period (FY)
  2021 – 2023
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 64010:Environmental load and risk assessment-related
- Research Institution
  Japan Atomic Energy Agency
Effective removal and immobilize radioactive oxyanions from aqueous solutions by combination of the barite-coprecipitation and the subsequent solidification treatment.Principal Investigator
- Principal Investigator
  
  Tokunaga Kohei
- Project Period (FY)
  2019 – 2021
- Research Category
  
  Grant-in-Aid for Early-Career Scientists
- Review Section
  
  Basic Section 31010:Nuclear engineering-related
- Research Institution
  Japan Atomic Energy Agency

All 2024 2023 2021 2019

All Journal Article Presentation

[Journal Article] Microbially formed Mn(IV) oxide as a novel adsorbent for removal of Radium2024
- Author(s)
  Tanaka Kazuya、Yamaji Keiko、Masuya Hayato、Tomita Jumpei、Ozawa Mayumi、Yamasaki Shinya、Tokunaga Kohei、Fukuyama Kenjin、Ohara Yoshiyuki、Maamoun Ibrahim、Yamaguchi Akiko、Takahashi Yoshio、Kozai Naofumi、Grambow Bernd
- Journal Title
  
  Chemosphere
  
  Volume: 355 Pages: 141837-141837
- DOI
  10.1016/j.chemosphere.2024.141837
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K13693, KAKENHI-PROJECT-19K22151
[Journal Article] Improved immobilization of Re(VII) from aqueous solutions via bimetallic Ni/Fe0 nanoparticles: Implications towards Tc(VII) removal2023
- Author(s)
  Maamoun Ibrahim、Tokunaga Kohei、Dohi Terumi、Kanno Futoshi、Falyouna Omar、Eljamal Osama、Tanaka Kazuya
- Journal Title
  
  Frontiers in Nuclear Engineering
  
  Volume: 2 Pages: 1142823-1142823
- DOI
  10.3389/fnuen.2023.1142823
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23K13693
[Journal Article] Arsenic and iron speciation and binding in the surface soils in Ningyo-toge mill tailings pond using X-ray absorption fine spectroscopy.2023
- Author(s)
  Kohei Tokunaga, Yoshio Takahashi., and Naofumi Kozai
- Journal Title
  
  Journal of Nuclear and Radiochemical Sciences
  
  Volume: 23 Pages: 14-19
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23K13693
[Journal Article] バライト共沈法の環境放射化学・地球化学的な応用に関する研究2023
- Author(s)
  徳永紘平
- Journal Title
  
  放射化学
  
  Volume: 47 Pages: 20-23
- Data Source
  KAKENHI-PROJECT-23K13693
[Journal Article] Effective removal of iodate by coprecipitation with barite: Behavior and mechanism2021
- Author(s)
  Tokunaga Kohei、Takahashi Yoshio、Tanaka Kazuya、Kozai Naofumi
- Journal Title
  
  Chemosphere
  
  Volume: 266 Pages: 129104-129104
- DOI
  10.1016/j.chemosphere.2020.129104
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-19K21893, KAKENHI-PROJECT-18KK0296, KAKENHI-PROJECT-19K15481, KAKENHI-PROJECT-18H04134
[Journal Article] A Fluorous Phosphate for the Effective Extraction of LnIII from Nitrate media: Comparison with a Conventional Organic Phosphate2021
- Author(s)
  Yuki Ueda, Kei Kikuchi, Kohei Tokunaga, Tsuyoshi Sugita, Noboru Aoyagi, Kazuya Tanaka, Hiroyuki Okamura
- Journal Title
  
  Solvent Extraction and Ion Exchange
  
  Volume: － Issue: 5-6 Pages: 491-511
- DOI
  10.1080/07366299.2021.1874115
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K15605, KAKENHI-PROJECT-19K15481, KAKENHI-PROJECT-21K17911
[Presentation] 鉄鉱物の化学状態の変化に伴う環境中でのヒ素及びウランの移行・濃集挙動の解明2023
- Author(s)
  徳永紘平, 高橋嘉夫, 香西直文
- Organizer
  日本放射化学会第67回討論会
- Data Source
  KAKENHI-PROJECT-23K13693
[Presentation] Improvement of the stability of IO3-, SeO32-, and SeO42--coprecipitated barite after treatment with phosphate ions2023
- Author(s)
  Tokunaga, K., Tanaka, K., Takahashi, Y., & Kozai, N.
- Organizer
  33rd Goldschmidt Conference
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K13693
[Presentation] Effective removal of oxyanions from aqueous solution by coprecipitated with barite2019
- Author(s)
  Kohei Tokunaga, Yoshio Takahashi, and Naofumi Kozai
- Organizer
  Goldschmidit 2019
- Data Source
  KAKENHI-PROJECT-19K15481
[Presentation] A new technique for removing selenite and selenite from aqueous solution by coprecipitation with barite2019
- Author(s)
  Kohei Tokunaga, Yoshio Takahashi, and Naofumi Kozai
- Organizer
  Migration 2019
- Data Source
  KAKENHI-PROJECT-19K15481

1. Kozai Naofumi (80354877)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
2. 数納広哉 (50399309)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
3. 上田祐生 (80806638)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
4. 光延聖 (70537951)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
5. 白石史人 (30626908)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
6. 加藤真悟 (40554548)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
7. 濱村奈津子 (50554466)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
8. 高橋嘉夫

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
9. 岡村浩之

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results

Tokunaga Kohei 徳永 紘平

Research Projects

Research Products

Co-Researchers

Investigation of complex factors controlling arsenic accumulation in surface paddy soils and its application to nature-mimetic soil remediation

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Migration of arsenic and uranium in environments during iron transformationPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Elucidation of

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Effective removal and immobilize radioactive oxyanions from aqueous solutions by combination of the barite-coprecipitation and the subsequent solidification treatment.Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

[Journal Article] Microbially formed Mn(IV) oxide as a novel adsorbent for removal of Radium2024

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Improved immobilization of Re(VII) from aqueous solutions via bimetallic Ni/Fe0 nanoparticles: Implications towards Tc(VII) removal2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Arsenic and iron speciation and binding in the surface soils in Ningyo-toge mill tailings pond using X-ray absorption fine spectroscopy.2023

Author(s)

Journal Title

Data Source

[Journal Article] バライト共沈法の環境放射化学・地球化学的な応用に関する研究2023

Author(s)

Journal Title

Data Source

[Journal Article] Effective removal of iodate by coprecipitation with barite: Behavior and mechanism2021

Author(s)

Journal Title

DOI

Data Source

[Journal Article] A Fluorous Phosphate for the Effective Extraction of LnIII from Nitrate media: Comparison with a Conventional Organic Phosphate2021

Author(s)

Journal Title

DOI

Data Source

[Presentation] 鉄鉱物の化学状態の変化に伴う環境中でのヒ素及びウランの移行・濃集挙動の解明2023

Author(s)

Organizer

Data Source

[Presentation] Improvement of the stability of IO3-, SeO32-, and SeO42--coprecipitated barite after treatment with phosphate ions2023

Author(s)

Organizer

Data Source

[Presentation] Effective removal of oxyanions from aqueous solution by coprecipitated with barite2019

Author(s)

Organizer

Data Source

[Presentation] A new technique for removing selenite and selenite from aqueous solution by coprecipitation with barite2019

Author(s)

Organizer

Data Source

Tokunaga Kohei 徳永紘平