Keita Irisawa - My portal

Profile Information

J-GLOBAL ID: 202001010118772263
researchmap Member ID: R000004979

Research History

Oct, 2021 - Present

National Institute of Technology, Ibaraki College
Apr, 2008 - Sep, 2021

(Ph.D.), Japan Atomic Energy Agency
Mar, 2015 - Mar, 2016

Visiting researcher, Department of Materials Science and Engineering, The University of Sheffield

Education

Apr, 2005 - Mar, 2008

Department of Earth and Planetery Sciences, School of Sciece, Tokyo Institute of Technology
Jan, 2007 - Mar, 2007

Department of Earth and Planetary Sciences, University of California, Davis
Apr, 2003 - Mar, 2005

Department of Earth and Planetery Science, School of Science, Tokyo Institute of Technology
Apr, 1999 - Mar, 2003

Department of Earth and Planetary Science, School of Science, Tokyo Institute of Technology

Committee Memberships

Sep, 2023

実行委員, 錯体化学会第73回討論会

Awards

Papers

Solidification and stabilization of strontium and chloride ions in thermally treated calcium aluminate cement modified with or without sodium polyphosphate

K. Irisawa, M. Namiki, T. Taniguchi, I. Garcia-Lodeiro, H. Kinoshita

156 106758_1-8, 2022 Peer-reviewedLead author
Structural characterization by X-ray analytical techniques of calcium aluminate cement modified with sodium polyphosphate containing cesium chloride

Y. Takahatake, S. Watanabe, K. Irisawa, H. Shiwaku, M. Watanabe

Journal of Nuclear Materials, 556(1) 153170_1-7, Dec, 2021 Peer-reviewed
Influence of mixing solution on characteristics of calcium aluminate cement modified with sodium polyphosphate

K. Irisawa, I. Garcia-Lodeiro, H. Kinoshita

Cement and Concrete Research, 128 105951_1-7, Feb, 2020 Peer-reviewed
Development of phosphate modified CAC cementitious systems with reduced water content for the immobilization of radioactive wastes

I. Garcia-Lodeiro, K. Irisawa, Y. Meguro, H. Kinoshita

Proceedings of 15th International Congress on the Chemistry of Cement, 1-10, Jun, 2019 Peer-reviewed
Application of phosphate modified CAC for incorporation of simulated secondary aqueous wastes in Fukushima Daiichi NPP, 1; Characterization of solidified cementitious systems with reduced water content

I. Garcia-Lodeiro, R. Lebon, D. Machoney, B. Zhang, K. Irisawa, T. Taniguchi, M. Namiki, T. Osugi, Y. Meguro, H. Kinoshita

Proceedings of 3rd International Symposium on Cement-based Materials for Nuclear Wastes, 1-4, Oct, 2018 Peer-reviewed
Reduction of water content in calcium aluminate cement with/out phosphate modification for alternative cementation technique

I. Garcia-Lodeiro, K. Irisawa, F. Jin, Y. Meguro, H. Kinoshita

Cement and Concrete Research, 109 243-253, Jul 1, 2018 Peer-reviewed
Heat treatment of phosphate-modified cementitious matrices for safe storage of secondary radioactive aqueous wastes in Fukushima Daiichi Nuclear Power Plant

K. Irisawa, T. Taniguchi, M. Namiki, I. Garcia-Lodeiro, T. Osugi, T. Sakakibara, O. Nakazawa, Y. Meguro, H. Kinoshita

Proceedings of the 2017 International Congress on Advances in Nuclear Power Plant, 17618, Apr, 2017 Peer-reviewed
Swelling pressure and leaching behaviors of synthetic bituminized waste products with various salt contents under a constant-volume condition

Keita Irisawa, Yoshihiro Meguro

Journal of Nuclear Science and Technology, 54(3) 1-8, Jan 3, 2017 Peer-reviewed
Expansion control for cementation of incinerated ash

Takuya Nakayama, Sin’ichi Suzuki, Keiji Hanada, Osamu Tomioka, Junya Sato, Keita Irisawa, Yoshimi Kawato, Yoshihiro Meguro

Proceedings of 2nd International Symposium on Cement-based Materials for Nuclear Wastes (NUWCEM 2014), Jun, 2014 Peer-reviewed
Effects of salt content on leaching properties of synthetic bituminized wastes

Keita Irisawa, Osamu Ohsone, Yoshihiro Meguro

Journal of Nuclear Science and Technology, 51(3) 323-331, Mar 4, 2014 Peer-reviewedLead author
Development of separation technique of sodium nitrate from low-level radioactive liquid waste using electrodialysis with selective ion-exchange membranes

K. Irisawa, A. Nakagawa, T. Onizawa, T. Kogawara, K. Hanada, Y. Meguro

Proceedings of the ASME 2013 15th International Conference on Environmental Remediation and Radioactive Waste Management, 96104, Sep, 2013
Coupled 182W-142Nd constraint for early earth differentiation

Frederic Moynier, Qing-Zhu Yin, Keita Irisawa, Maud Boyet, Benjamin Jacobsen, Minik T. Rosing

Proceedings of the National Academy of Sciences of the United States of America, 107(24) 10810-10814, Jun 15, 2010 Peer-reviewed
Discovery of non-radiogenic tungsten isotopic anomalies in the Allende CV3 chondrite

Keita Irisawa, Qing-Zhu Yin, Takafumi Hirata

Geochemical Journal, 43(6) 395-402, 2009 Peer-reviewed
Precise isotopic analysis of Mo in seawater using multiple collector-inductively coupled mass spectrometry coupled with a chelating resin column preconcentration method

Yusuke Nakagawa, M. Lutfi Firdaus, Kazuhiro Norisuye, Yoshiki Sohrin, Keita Irisawa, Takafumi Hirata

Analytical Chemistry, 80(23) 9213-9219, Dec 1, 2008 Peer-reviewed
Tungsten isotopic analysis on six geochemical reference materials using multiple Collector-ICP-Mass spectrometry coupled with Rhenium-External correction technique

Keita Irisawa, Takafumi Hirata

GEOCHIMICA ET COSMOCHIMICA ACTA, 70(18) A279-A279, Aug, 2006 Peer-reviewed
Tungsten isotopic analysis on six geochemical reference materials using multiple collector-ICP-mass spectrometry coupled with a rhenium-external correction technique

Keita Irisawa, Takafumi Hirata

Journal of Analytical Atomic Spectrometry, 21(12) 1387-1387, 2006 Peer-reviewedLead author

Misc.

Hydrogen gas measurements of phosphate cement irradiated during heat treatment

K. Irisawa, I. Kudo, T. Taniguchi, M. Namiki, T. Osugi, O. Nakazawa

QST Takasaki Annual Report 2017, Mar, 2019
Characterization of phosphate cement irradiated by -ray during dehydration,

K. Irisawa, I. Kudo, T. Taniguchi, M. Namiki, T. Osugi, O. Nakazawa

QST Takasaki Annual Report 2016, Mar, 2018
アスファルト固化体中の硝酸塩を取り除く－処分における硝酸塩影響の低減にかかわる技術開発－

入澤啓太

原子力機構の研究開発成果2016-2017, 2016
Development of Denitration Technique of MA-type Bituminized Waste Product by Aqueous Leaching Method

K. Irisawa, T. Komatsuzaki, Y. Kawato, T. Sakakibara, O. Nakazawa, Y. Meguro

JAEA-Technology 2015-008, 1-28, 2015
Development of Refilling Techniques of LA-type Bituminized Waste Products

K. Irisawa, T. Komatsuzaki, Y. Kawato, T. Sakakibara, O. Nakazawa, Y. Meguro

JAEA-Technology 2014-039, 2014
Relationship between IIIAB iron meteorites and pallasites main group explored by tungsten stable isotope compositions

Fukami Yusuke, Kimura Jun-ichi, Irisawa Keita, Yokoyama Tetsuya, Hirata Takafumi

Abstracts of Annual Meeting of the Geochemical Society of Japan, 57 272-272, 2010
Precise Mo isotopic analysis on Pacific and Antarctic seawater

Y. Nakagawa, M. L. Firdaus, K. Norisuye, Y. Sohrin, K. Irisawa, T. Hirata

GEOCHIMICA ET COSMOCHIMICA ACTA, 72(12) A670-A670, Jul, 2008
Isotopic fractionation of tungsten for meteoritical materials

K. Irisawa, T. Hirata, M. Tanimizu

METEORITICS & PLANETARY SCIENCE, 43(7) A63-A63, Jul, 2008
Tungsten isotopic fractionation for terrestrial and meteoritic materials

IRISAWA KEITA, Fukami Yusuke, Tanimizu Masaharu, Hirata Takafumi

Abstracts of Annual Meeting of the Geochemical Society of Japan, 55 359-359, 2008
Development of chelate resin column preconcentration method for precise isotope analysis of Mo in seawater

Y. Nakagawa, M. Lutfi Firdaus, K. Norisuye, Y. Sohrin, K. Irisawa, T. Hirata

GEOCHIMICA ET COSMOCHIMICA ACTA, 71(15) A701-A701, Aug, 2007

Presentations

リン酸セラミックス中のリン酸塩量によるアパタイト結晶化

塙未桜;入澤啓太

第９回関東磐越地区化学技術フォーラム, Nov 18, 2023
Na型，K型メタカオリンジオポリマーおよびOPCの物性に及ぼすSrCl2の影響

櫻井友哉;入澤啓太

第９回関東磐越地区化学技術フォーラム, Nov 18, 2023
Carbonate group substitution of biological apatite in fish bone

Dec 11, 2022
Thermal effects on apatite formation in phosphate cement

Dec 11, 2022
廃棄物として発生する含鉛製品の溶出試験

佐藤淳也, 大曽根理, 齋藤利充, 入澤啓太, 大杉武史, 曽根智之

日本原子力学会2020年秋の大会, Sep, 2020
重金属の固定化に向けたアルミノシリケート硬化体の出発原料となる非晶質Si-Al粉末の開発

佐藤淳也, 入澤啓太, 中澤修, 高岡昌輝

平成31年度日本原子力学会北関東支部若手研究者発表会, Apr, 2019
脱水中におけるリン酸系固化体の水素ガス測定

入澤啓太, 工藤勇, 谷口拓海, 並木仁宏, 大杉武史, 中澤修

QST高崎サイエンスフェスタ2018, Dec, 2018
Application of phosphate modified CAC for incorporation of simulated secondary aqueous wastes in Fukushima Daiichi NPP, 2; Leaching test of simulated wasteforms with reduced water content

Ines Garcia-Lodeiro, Keita Irisawa, Redolphe Lebon, Dominic Machoney, Boyu Zhang, Takumi Taniguchi, Masahiro Namiki, Takeshi Osugi, Yoshihiro Meguro, Hajime Kinoshita

3rd International Symposium on Cement-based Materials for Nuclear Wastes (NUWCEM 2018), Oct, 2018
逐次抽出法によるジオポリマー中の重金属の化学形態評価

佐藤淳也, 入澤啓太, 高岡昌輝, 中澤修

平成30年度日本原子力学会北関東支部若手研究者発表会, Apr, 2018
セメント系材料を用いたハロゲンの不溶化

谷口拓海, 入澤啓太, 並木仁宏, 中澤修

平成30年度日本原子力学会北関東支部若手研究者発表会, Apr, 2018
60Co-γ線が脱水中のリン酸セメントの特性に及ぼす影響

入澤啓太, 工藤勇, 谷口拓海, 並木仁宏, 大杉武史, 中澤修

QST高崎サイエンスフェスタ2017, Dec, 2017
Use of NaH2PO4 and (NaPO3)n as a phosphate source for development of magnesium phosphate

Ines Garcia-Lodeiro, Kai Wuen Ooi, Keita Irisawa, Osamu Nakazawa, Hajime Kinoshita

37th Cement and Concrete Science Conference, Sep, 2017
Development of solidification techniques with minimised water content for secondary radioactive aqueous wastes in Fukushima, 7; Leaching test of CAC and CAP containing simulated secondary wastes

Ines Garcia-Lodeiro, Redolphe Lebon, Dominic Machoney, Boyu Zhang, Keita Irisawa, Takeshi Osugi, Osamu Nakazawa, Hajime Kinoshita

日本原子力学会2017年秋の大会, Sep, 2017
Development of solidification techniques with minimised water content for secondary radioactive aqueous wastes in Fukushima, 6; Incorporation of simulated secondary aqueous wastes in CAC and CAP cements

Ines Garcia-Lodeiro, Redolphe Lebon, Dominic Machoney, Boyu Zhang, Keita Irisawa, Takeshi Osugi, Osamu Nakazawa, Hajime Kinoshita

日本原子力学会2017年秋の大会, Sep, 2017
福島汚染水処理二次廃棄物のための固定化技術の開発,5; Sr2+及びCl-の浸出速度

入澤啓太, 谷口拓海, 並木仁宏, Ines Garcia-Lodeiro, 大杉武史, 中澤修, Hajime Kinoshita

日本原子力学会2017年秋の大会, Sep, 2017
Development of solidification techniques with minimised water content for secondary radioactive aqueous wastes in Fukushima, 4; Heat-treatment of phosphate modified calcium aluminate cement under open system

Ines Garcia-Lodeiro, Feiyang Jin, Keita Irisawa, Yoshihiro Meguro, Hajime Kinoshita

日本原子力学会2016年秋の大会, Sep, 2016
Development of solidification techniques with minimised water content for secondary radioactive aqueous wastes in Fukushima, 3; Effects of phosphates on calcium aluminate cement under hydrothermal conditions

Ines Garcia-Lodeiro, Yun Gao, Mehul Chavda, Keita Irisawa, Yoshihiro Meguro, Hajime Kinoshita

日本原子力学会2016年秋の大会, Sep, 2016
福島汚染水処理二次廃棄物のための固定化技術の開発,2; セメントの形成鉱物に及ぼすリン酸の役割

入澤啓太, Ines Garcia-Lodeiro, 大杉武史, 中澤修, Hajime Kinoshita

日本原子力学会2016年秋の大会, Sep, 2016
福島汚染水処理二次廃棄物のための固定化技術の開発,1; 模擬廃棄物の合成と評価

谷口拓海, 入澤啓太, 伊藤譲, 並木仁宏, 大杉武史, 阿部智久, 佐藤淳也, 榊原哲朗, 中澤修, 目黒義弘, Ines Garia-Lodeiro, Hajime Kinoshita, 橋本勝文, 工藤勇

日本原子力学会2016年秋の大会, Sep, 2016
Effect of phosphate modification on incorporation of caesium nitrate by calcium aluminate cement

Keita Irisawa, Matthew Mcgahan, Yoshihiro Meguro, Hajime Kinoshita

4th International Workshop on Mechanisms and modelling of waste / cement interactions, May, 2016

Teaching Experience

Sep, 2022 - Present

物質工学実験Ⅲ（環境） (茨城工業高等専門学校)
Apr, 2022 - Present

国際創造工学基礎 (茨城工業高等専門学校)
Apr, 2022 - Present

化学通論I (茨城工業高等専門学校)
Apr, 2022 - Present

無機化学I (茨城工業高等専門学校)
Oct, 2021 - Present

物質工学実験Ⅰ（無機） (茨城工業高等専門学校)
Oct, 2021 - Present

応用化学演習Ⅱ (茨城工業高等専門学校)
Oct, 2021 - Present

Inorganic chemistry II (Ibaraki National College of Technology)

Research Projects

Development of solidification techniques with minimised water content for safe storage of secondary radioactive aqueous wastes in Fukushima

Nov, 2015 - Mar, 2017
Development of versatile cementitious matrix for Fukushima's wastes

Innovation, Impact and Knowledge Exchange (IIKE), Application for collaborative R&D award, EPSRC, May, 2015 - Sep, 2015