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Affiliation |
Organization for Global Collaboration Center for International Relations |
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Associate Professor |
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External Link |
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ITO Kenichi
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Degree 【 display / non-display 】
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Doctor (Engineering) ( 2008.9 Hokkaido University )
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Master (Aguliculture) ( 2001.3 Chiba University )
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Bachelor (Agliculture) ( 1999.3 Chiba University )
Research Areas 【 display / non-display 】
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Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Geotechnical engineering / 環境地盤工学
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Environmental Science/Agriculture Science / Environmental load reduction and remediation / Treatment of Heavy metal pollution
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Energy Engineering / Earth resource engineering, Energy sciences
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Environmental Science/Agriculture Science / Environmental impact assessment
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Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Environmental systems for civil engineering
Papers 【 display / non-display 】
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Ito K., Matsunaga M., Itakiyo T., Oishi H., Nukazawa K., Irie M., Suzuki Y.
International Journal of Sediment Research 38 ( 3 ) 469 - 480 2023.6
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：International Journal of Sediment Research
Sediment causes a serious problem in relation to dam function. A cooperative sediment sluicing operation has been under way since 2017 to prevent sediment from accumulating in dams in the Mimi River, Miyazaki, Japan. To achieve a smooth and stable operation, it is very important to determine the sediment source and a sediment transport system to maintain the dam's function. In the current study, the source and transport of sediment from the Mimi River basin have been analyzed with X-ray diffraction (XRD) to reveal the peaks of mineral species. The sediment samples were collected in the Mimi River basin from the Tsukabaru Dam to the sea in an area including 4 dams and 5 tributaries. In addition, the minerals in samples collected in 2014, before the start of the sediment sluicing operation, and from 2018 to 2020, after the start of the operation, were analyzed. An evaluation of the similarity of the sediment at each sampling point based on the X-ray diffraction peaks of mineral species showed that sediment distributed upstream was transported downstream in the year when the sediment sluicing was done. This result indicates that the sediment sluicing operation at dams ensured the continuity of the sediment distribution in the Mimi River basin. In addition, an investigation done in 2020 showed that sediment particles very similar to those of the upstream tributaries were deposited downstream because of extensive flooding caused by a large typhoon. The management of sediment transport has the greatest importance in a river basin where a dam is to be constructed. It is possible to trace the history of the sediment distribution and movement resulting from the operation of sediment sluicing by using sediment mineral analysis.
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ITO Kenichi, TASAKA Shinnosuke, MORISHITA Yuki, UZAWA Takeo
Journal of International Student Advisors and Educators 24 ( 0 ) 65 - 79 2022.3
Authorship：Lead author, Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Council of International Student Advisors of National Universities
There has been an issue of a mismatch between the types of businesses and occupations sought
by international students and local communities when it comes to finding employment for
international students in regional areas. Therefore, the University of Miyazaki, Miyazaki City office,
the Japan International Cooperation Agency, and local companies collaborated to implement the
“Miyazaki-Bangladesh Model” to support the employment of highly skilled foreign professionals in
the ICT field through education before coming to Japan “B-JET” and short-term study abroad “JIP”.
For the B-JET, original Japanese language teaching materials were developed and used, and additionally, the class schedule and classroom management were similar to Japanese elementary and junior high schools with small classes in order to have the students acquire Japanese social customs. For JIP, in addition to Japanese language education, the students were given internships at companies that decide to employ them. At the same time, in order to promote cross-cultural understanding on the part of host companies that are not familiar with foreigners and to enhance their readiness to accept foreign engineers, company representatives as tutors were provided for support for students. As a result, 73% of the students who completed the B-JET, entered employment in Japanese companies, with one-third of them working for companies in Miyazaki Prefecture. -
Kei Nukazawa, Tomoya Itakiyo, Kenichi Ito, Shinji Sato, Hiroyuki Oishi, Yoshihiro Suzuki
Catena 203 105323 2021.8
Language：English Publishing type：Research paper (scientific journal) Publisher：Catena
Knowledge of the provenance and transport processes of coastal sediments is central to safeguarding against coastal erosion. However, to date coastal sediments have been poorly investigated without considering complex artificial and natural attributes such as coastal structures and watershed geology of potential source rivers. In this study, mineralogical fingerprinting technique was used to track the sources of sediments along a coastline in southwest Japan with reference to sediments of outflowing rivers. The sediment samples were collected from 65 beach sites along the Miyazaki Coast and its surrounding coastal area, and five river sites nearby. To determine the size distribution and geochemical and mineralogical compositions of the sediments, grain size, X-ray fluorescence, and X-ray diffraction (XRD) analyses were performed. Subsequently, cluster analysis was used to classify mineralogically similar groups in terms of XRD peak intensity ratio. The coastal sediment clusters corresponded well to nearby riverine clusters, suggesting that the coastal sediments were primarily transported from these river watersheds, although uncertainty as contributions of oceanic flows might be involved. The concordance ascribes to the major geological classifications in the watersheds of major rivers, as well as smaller rivers flowing in the northern area (e.g., the Shimanto Supergroup and Osuzuyama Acid Rocks). In addition to the major tendency, we also observed potential effects of manmade structures on the coastal sediment prevalence; the mineralogical similarities decreased across jetties in the Hitotsuse River mouth. The vertical mineralogical distribution of the core sediment samples observed on the left and right banks of the Hitotsuse River mouth supported the general trend of uniform cluster patterns in each core sample with horizontally different clusters across the river mouth. Mineralogical analysis targeting both coastal and riverine sediments is effective for understanding the characteristics of sediment distribution, which in turn is useful for efforts devoted to protection against coastal erosion.
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Hirofumi Sakanakura, Kenichi Ito, Jiajie Tang, Mikako Nakagawa, and Hiroyuki Ishimori
Materials 14 ( 10 ) 2534 - 2549 2021.5
Language：English Publishing type：Research paper (scientific journal) Publisher：Materials
Adsorption parameters such as the distribution coefficient are required to predict the release behavior of contaminants using advection-dispersion models. However, for potentially contaminant-releasing materials (PCMs) such as dredged sludge and coal ash, these parameters cannot be obtained by conventional adsorption tests. This study developed a method to determine adsorption parameters for PCMs from a set of batch tests conducted in parallel as a function of the liquid-solid ratio (LS-parallel test). This LS-parallel test was performed on sandy soil derived from marine sediment using liquid-solid ratios from 1 to 300 L/kg. The water-contact time was also changed from 10 min to 28 d to elucidate the kinetics or equilibrium of contaminants released from the sample. Adsorption parameters were successfully obtained if the substance was under adsorption control. A column percolation test was performed to confirm the effectiveness of the obtained parameters. Good agreements were observed for SO42− and B, but discrepancies remained for other substances such as F− and as suggesting that improvements are necessary in both the LS-parallel test procedure and the advection-dispersion model.
DOI： 10.3390/ma14102534
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Verification of Effectiveness for Control of Percolation water by Insolubilized Soil Layer and Downspout in Embankment Reviewed
Mamoru Kotani, Tomotaka Morishita, Toshihiko Miura, Kenichi Ito
419 - 426 2020.12
Language：Japanese Publishing type：Research paper (conference, symposium, etc.)
Books 【 display / non-display 】
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放射性物質対策技術 ～除去、モニタリング、装置・システム開発～
山田裕久，横山信吾，伊藤健一，佐藤努，万福裕造，八田珠郎（ Role： Contributor , 第1編2章第3節 ジオマテリアルを用いた放射性物質除去・回収技術）
株式会社エヌ・ティー・エス 2015.2 （ ISBN:9784860434151 ）
Language：Japanese Book type：Scholarly book
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放射性物質対策技術 ～除去、モニタリング、装置・システム開発～
伊藤 健一
株式会社エヌ・ティー・エス 2015.2 （ ISBN:9784860434151 ）
Language：Japanese
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放射性物質対策技術 : 除去、モニタリング、装置・システム開発
森田 昌敏, 三村均, 熊沢紀之, 矢野勝彦, 青野宏通, 槇田洋二, 苑田晃成, 山田裕久, 横山 信吾, 伊藤健一, 佐藤努, 万福裕造, 八田珠郎, 多賀淳, 石川彰彦, 村上秀樹, 菊池良栄, 金原 和秀
エヌ・ティー・エス 2015 （ ISBN:9784860434151 ）
Language：Japanese
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放射性物質の吸着・除染および耐放射線技術における材料・施工・測定の新技術
山田裕久, 横山信吾, 渡辺雄二郎, 中田弘太郎, 田村堅志, 佐藤努, 伊藤健一, 八田珠郎（ Role： Joint author , 第3章第3節 天然鉱物のセシウム吸着能力の比較）
（株）技術情報協会 2014.11 （ ISBN:4861045584 ）
Language：Japanese Book type：Scholarly book
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放射性物質の吸着・除染および耐放射線技術における材料・施工・測定の新技術
伊藤 健一
（株）技術情報協会 2014.11 （ ISBN:4861045584 ）
Language：Japanese
MISC 【 display / non-display 】
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土壌汚染における分離の技術と課題 土壌分級洗浄技術の発展:分級洗浄による汚染土壌からの有害元素の分離除去・減容化 Invited
伊藤健一
分離技術 51 ( 1 ) 2 - 12 2021.1
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal)
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硫黄山噴火による強酸性白濁水の対策 Invited Reviewed
伊藤健一
水環境学会誌 43(A) ( 7 ) 236 - 240 2020.7
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Publisher：公益社団法人日本水環境学会
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Yaita Tsuyoshi, Honda Mitsunori, Shimoyama Iwao, Ito Kenichi, Manpuku Yuzo, Tsuji Takuya, Matsumura Daiju
Journal of the Atomic Energy Society of Japan 59 ( 8 ) 483 - 487 2017.8
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution) Publisher：Atomic Energy Society of Japan
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講座「放射性物質汚染廃棄物対策技術の現状」４. 放射性汚染廃棄物対策技術 －汚染土壌と減容化処理技術－ Invited
伊藤健一
地盤工学会誌 63 ( 11/12 ) 70 - 77 2015.11
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Publisher：地盤工学会
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火山灰凝集剤による濁水の凝集性能
鈴木祥広,玄晄植,吉野内謙,伊藤健一,和田信一郎
用水と廃水 57 ( 3 ) 193 - 201 2015.10
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution)
Presentations 【 display / non-display 】
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Comparison of heavy metal elution properties from the excavated soil by the liquid-solid ratio batch examination
Yuko Yamada, Kenichi Ito, Toshihiro horinaka, Kazuki Torii, Hironori Shinya, and Ken Kurihara
2023.6.15
Event date： 2023.6.15 - 2023.6.16
Language：Japanese Presentation type：Oral presentation (general)
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Consideration of comparison between batch tests with differing liquid-solid ratios and flow-through experiment
Kenichi Ito, Mamoru Kotani, Kanako Ito, Toshiihko Miura, and Tomotaka Morishita
2023.6.16
Event date： 2023.6.15 - 2023.6.16
Language：Japanese Presentation type：Oral presentation (general)
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宮崎県北部沖積層の土壌中のひ素の存在形態
伊藤 健一
第65回粘土科学討論会 (島根) 2022.9.7 一般社団法人日本粘土学会
Event date： 2022.9.7 - 2022.9.8
Language：Japanese Presentation type：Oral presentation (general)
Venue：島根
第65回粘土科学討論会講演要旨集, P39-40
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土壌の経時変化の予測に向けた酸化促進試験方法の検討
伊藤健一, 小谷護留, 伊藤華奈子
第27回地下水・土壌汚染とその防止対策に関する研究集会 (神奈川県横須賀市) 2022.6.24
Event date： 2022.6.23 - 2022.6.24
Language：Japanese Presentation type：Oral presentation (general)
Venue：神奈川県横須賀市
S4-21 土壌の経時変化の予測に向けた酸化促進試験方法の検討,
第27回地下水・土壌汚染とその防止対策に関する研究集会講演集, P381-386. -
土壌の酸性化特性試験方法の開発
小谷 護留, 森下 智貴, 三浦 俊彦, 伊藤 健一
第64回粘土科学討論会 (長野) 2021.9.15 一般社団法人日本粘土学会
Event date： 2021.9.14 - 2021.9.18
Language：Japanese
Venue：長野
第64回粘土科学討論会講演要旨集, P55-56
Awards 【 display / non-display 】
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日本粘土学会 優秀講演賞
2011.3 日本粘土学会
伊藤健一, 平田利治, 山田和宏, 河野勝仁, 横田漠
Award type：Award from Japanese society, conference, symposium, etc. Country：Japan
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資源・素材学会 論文賞
2010.3 一般社団法人資源・素材学会
伊藤健一, 福士圭介, 橋本晃一, 田中小満, 池田穂高, 佐藤努, 米田哲朗
Award type：Honored in official journal of a scientific society, scientific journal Country：Japan
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日本粘土学会 技術賞
2008.9 日本粘土学会
株式会社ソフィア
Award type：Award from Japanese society, conference, symposium, etc. Country：Japan
Grant-in-Aid for Scientific Research 【 display / non-display 】
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加速的手法による自然由来重金属含有土壌の長期変質・溶出挙動予測に関する研究
Grant number：22K04319 2022.04 - 2025.03
独立行政法人日本学術振興会 科学研究費補助金 基盤研究(C)
Authorship：Principal investigator
Available Technology 【 display / non-display 】
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汚染対策： 重金属等の土壌・水質汚染のリスク評価と対策技術の研究
社会・国際： 高度外国人材受入、日本語教育・教員養成、国際交流・支援
環境：将来の社会・生活環境への取り組みHome Page： 宮崎大学国際連携機構国際連携センター
Related fields where technical consultation is available：◆汚染対策：土壌・水質の重金属等の無機有害物質による汚染対策、および関連分野の環境対策
◆社会・国際：日本語教育/教員養成、外国人受入れ・支援、多文化共生推進、他Message：環境汚染も社会環境の変化も、広くは「人の生活『環境』の問題」。これまでの民間・研究・社会での経験を活かして、「技術×人」で社会課題の解決に貢献したいと考えています。