Updated on 2022/03/25

写真a

 
HAYASHI Rumiko
 
Organization
Administrative Support Organizations Environment, Health & Safety Promotion Environment, Health & Safety Office Associate professor
Graduate School
Graduate School of Environmental Studies
Title
Associate professor

Degree 1

  1. 博士(工学) ( 2007.1   東京大学 ) 

Current Research Project and SDGs 1

  1. Chemical management

Research History 4

  1. Nagoya University   Environment, Health & Safety Office, Environment, Health & Safety Promotion   Associate professor

    2016.4

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    Country:Japan

  2. The University of Tokyo   Division for Environment, Health and Safety   Assistant Professor

    2009.6 - 2016.3

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    Country:Japan

  3. The University of Tokyo   Project Researcher

    2007.4 - 2009.5

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    Country:Japan

  4. Kumamoto University   COE Research Associate

    2007.1 - 2007.3

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    Country:Japan

Education 2

  1. The University of Tokyo   Graduate School, Division of Engineering

    - 2007.1

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    Country: Japan

  2. The University of Tokyo   Faculty of Engineering

    1997.4 - 2001.3

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    Country: Japan

Professional Memberships 6

  1. (社)日本化学会   正会員

    2017

  2. (公社)大気環境学会   正会員

    2011

  3. Research for Environment, Health and Safety Education

    2010

  4. The Academic Consociation of Environmental Safety and Waste Management, Japan

    2009

  5. 研究実験施設・環境安全教育研究会

    2009 - 2010

  6. (社)化学工学会   正会員

    2001

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Committee Memberships 2

  1. The High Pressure Gas Safety Institute of Japan   高圧ガス保安規制等に係る法技術的な課題の検討委員会 委員  

    2021.6   

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    Committee type:Academic society

  2. 中間貯蔵・環境安全事業株式会社(JESCO)   豊田PCB処理事業部会委員  

    2020   

Awards 2

  1. Poster Awards Bronze Medal

    2022.1   The 8th Asian Conference on Safety and Education in Laboratory   Case Studies of Selecting Suitable Personal Protective Equipment for Laboratory Safety toward Quick Reference

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

  2. Young Poster Award

    2006.8   The Joint Meeting of 8th International Symposium on Hydrothermal Reactions and 7th International Conference on Solvothermal Reactions  

    Rumiko Hayashi

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

 

Papers 35

  1. Subcritical water electrolysis for cobalt recovery from spent lithium-ion batteries in an acidic environment Reviewed

    Wahyudiono, Kosuke Kosugi, Rumiko Hayashi, Siti Machmudah, Rodolfo Morales Ibarra, Hideki Kanda, Motonobu Goto

    JOURNAL OF SUPERCRITICAL FLUIDS   Vol. 181   2022.2

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:ELSEVIER  

    Precious metal recovery was realized in this study using the electrowinning technique under subcritical water conditions. The experiments were performed in a batch system at temperatures of 110-200 degrees C with reaction times of 60-300 min. Electric currents of 1-3 A were applied to an electrolyte solution containing Co and Li as target elements via stainless steel (SUS) electrodes. SEM/EDS and XRD analyses indicated that the metallic elements in the deposited metal on the cathode cell surface comprised Co as the primary element. Inductively coupled plasma atomic emission spectroscopy suggested that the Co yield independently increased with increases in operating parameters such as reaction time, reaction temperature, and applied electric current. The Co yield approached 56.2% when the experiment was conducted at 200 degrees C with an applied electric current of 1.0 A for 300 min. The technique described herein is innovative and practical for advanced precious-metal recovery based on the use of electric current in a one-step process.

    DOI: 10.1016/j.supflu.2021.105501

    Web of Science

  2. Eleven risk elements rationalizing laboratory accidents at universities Reviewed

    Shizuaki Murata, Takaaki Harada, Rumiko Hayashi, Taiji Mishina, Kengo Tomita

    Journal of Environment and Safety   Vol. Advance online publication   2022.1

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    Language:English  

    DOI: 10.11162/daikankyo.E21RP0901

  3. Case Study of Text Analytics Applied to Accident Reports of a University Reviewed

    Rumiko Hayashi, Tsubasa Yamada, Kouhei Shinkawa, Kengo Tomita, Tadashi Nishikimi, Shizuaki Murata, Hidekazu Kurimoto

    MATEC Web of Conferences   Vol. 333   page: 10003 - 10003   2021

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    Publishing type:Research paper (scientific journal)   Publisher:EDP Sciences  

    Many accidents have occurred in universities and the accident reports are accumulated in most universities. The information described in the accident reports must be used effectively to prevent a recurrence of the accidents. In this study, we applied text analytics to the description written in 373 accident reports in a university as a case study. Information mining method was adopted for the contents analysis, and 9 factors based on m-SHEL and human error, that is “software”, “hardware”, “environment”, “liveware2”, “management” “slip”, “lapse”, “mistake”, and “violation” were used for morphological analysis for description in report. The factors in each category of accident situation were extracted, and it is suggested that text analytics is one of the most effective methods to analyse the accident reports in universities.

    DOI: 10.1051/matecconf/202133310003

  4. Development of mobile application to communicate risk information of chemical substances to users Reviewed

    Rumiko Hayashi, Yoshihiro Yamaguchi, Kengo Tomita, Toshihiro Kita

    Journal of Environment and Safety   Vol. 11 ( 2 ) page: 11 - 15   2020.8

  5. 名古屋大学環境安全衛生管理室の安全教育に関する取り組み Reviewed

    錦見 端, 林 瑠美子, 三品 太志, 富田 賢吾

      Vol. 10 ( 3 ) page: 189 - 196   2019.11

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    Publishing type:Research paper (scientific journal)  

  6. Key points regarding safety education related to fire and/or explosion risk control in academic laboratories Reviewed

    Shizuaki Murata, Kengo Tomita, Taiji Mishina, Rumiko Hayashi, Tadashi Nishikimi

    Journal of Environment and Safety   Vol. 10 ( 2 ) page: 59 - 65   2019.9

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    Publishing type:Research paper (scientific journal)  

  7. Visualization of activity in university laboratory for experimental accidents/incidents prevention using non-empirical approach Reviewed

    Yukiko Nezu, Rumiko Hayashi, Hitoshi Yamamoto, Yoshito Oshima

    Journal of Environment and Safety   Vol. 10 ( 2 ) page: 45 - 47   2019.9

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    Publishing type:Research paper (international conference proceedings)  

  8. Supercritical water oxidation as a pretreatment method for stable carbon isotope ratio analysis of rice Reviewed

    Yuta Matsumoto, Rumiko Hayashi, Kenichi Tonokura

    Journal of Chemical Engineering of Japan   Vol. 52 ( 1 ) page: 83 - 88   2019.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    The present study applies supercritical water oxidation (SCWO) as a pretreatment method for the stable carbon isotope ratio analysis of rice. In this study, three kinds of polished rice with different locations of production were treated by SCWO using a batch-type reactor. At a temperature of 500°C, pressure of 25 MPa, and reaction time of 120 min with an excessive amount of oxygen, more than 99% of the rice-derived organic carbon was converted into carbon dioxide without generating any other C-containing gases. Utilizing TiO as a catalyst, 99.5% of rice-derived organic carbon was selectively converted into CO within 15 min. In each case, the stable carbon isotope ratio of generated CO was successfully obtained using isotope ratio mass spectrometry. The δ C value of CO from the SCWO treatment of rice was compared with that of CO from the catalytic combustion of rice. 2 2 2 2 2 13

    DOI: 10.1252/jcej.17we273

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  9. Injury risk estimation for students involved in experimental work in Nagoya University Reviewed

    錦見端, 富田賢吾, 林瑠美子, 村田静昭, 村田静昭

    環境と安全(Web)   Vol. 10 ( 1 ) page: 1‐7(J‐STAGE)   2019

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    Language:Japanese  

    DOI: 10.11162/daikankyo.19G0201

    J-GLOBAL

  10. 大学で雇用する障害者の事故防止に向けた調査と取り組み Reviewed

    林 瑠美子、松岡 博、富田 賢吾、錦見 端、三品 太志、村田 静昭

    環境と安全   Vol. 9 ( 3 ) page: 49-56   2018

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    Authorship:Lead author   Language:Japanese   Publishing type:Research paper (scientific journal)  

  11. 名古屋大学環境安全衛生管理室創立40周年記念講演会の報告─ 今後の名古屋大学の環境安全衛生への取り組み支援 ─

    村田 静昭、林 瑠美子

    大学等環境安全協議会会誌   ( 41 ) page: 25-27   2017

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    Language:Japanese  

  12. New Approach for Safety Education in Nagoya University Reviewed

    Kengo Tomita, Tadashi Nishikimi, Rumiko Hayashi, Taiji Mishina and Shizuaki Murata

    Journal of Environment and Safety   Vol. 8 ( 2 ) page: 49-52   2017

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    Language:English   Publishing type:Research paper (scientific journal)  

  13. 解体建物を活用した火災実験の実施と防災教育への展開 Reviewed

    富田賢吾, 林瑠美子, 錦見端, 三品太志, 村田静昭

    環境と安全   Vol. 8 ( 3 ) page: 91-100   2017

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

  14. Kinetic analysis of the mixture effect in supercritical water oxidation of ammonia/methanol Reviewed

    Eriko Shimoda, Tatsuya Fujii, Rumiko Hayashi, Yoshito Oshima

    The Journal of Supercritical Fluids   Vol. 116   page: 232-238   2016.10

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    Language:English   Publishing type:Research paper (scientific journal)  

  15. Simultaneous measurements of on-road / in-vehicle Nanoparticles and NOx while driving: actual situations, passenger exposure and secondary formations Reviewed

    Hiroyuki Yamada, Rumiko Hayashi, Kenichi Tonokura

    Science of the Total Environment   Vol. 563-564   page: 944-955   2016.9

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    Language:English   Publishing type:Research paper (scientific journal)  

  16. Chemical substances management system at the University of Tokyo Reviewed

    Yoshiko Tsuji, Kenichi Tonokura, Rumiko Hayashi

    Journal of Environment and Safety   Vol. 7 ( 2 ) page: 129-131   2016

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    Language:English   Publishing type:Research paper (scientific journal)  

  17. Analysis on washing bottle usage in academic chemical laboratory Reviewed

    Yukiko Nezu, Rumiko Hayashi, Yoshito Oshima

    Journal of Environment and Safety   Vol. 6 ( 2 ) page: 99-102   2015

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    Language:English   Publishing type:Research paper (scientific journal)  

  18. On-road and in-vehicle concentrations of NO2 and particles on a highway Reviewed

    Hiroyuki Yamada, Rumiko Hayashi, Kenichi Tonokura

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   Vol. 248   2014.8

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    Language:English   Publisher:AMER CHEMICAL SOC  

    Web of Science

  19. Case study of experimental behavior analysis in an academic chemical laboratory using fixed-point observation via web cameras Reviewed

    Yukiko Nezu, Rumiko Hayashi, Yoshito Oshima

      Vol. 5 ( 2 ) page: 99 - 105   2014.5

  20. Effects of water on reactions for waste treatment, organic synthesis, and bio-refinery in sub- and supercritical water Reviewed

    Makoto Akizuki, Tatsuya Fujii, Rumiko Hayashi, Yoshito Oshima

    Journal of Bioscience and Bioengineering   Vol. 117 ( 1 ) page: 10 - 18   2014.1

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    Publisher:SOC BIOSCIENCE BIOENGINEERING JAPAN  

    Current research analyzing the effects of water in the field of homogeneous and heterogeneous reactions of organics in sub- and supercritical water are reviewed in this article. Since the physical properties of water (e.g., density, ion product and dielectric constants) can affect the reaction rates and mechanisms of various reactions, understanding the effects that water can have is important in controlling reactions. For homogeneous reactions, the effects of water on oxidation, hydrolysis, aldol condensation, Beckman rearrangement and biomass refining were introduced including recent experimental results up to 100MPa using special pressure-resistance equipment. For heterogeneous reactions, the effects of ion product on acid/base-catalyzed reactions, such as hydrothermal conversion of biomass-related compounds, organic synthesis in the context of bio-refinery, and hydration of olefins were described and how the reaction paths are controlled by the concentration of water and hydrogen ions was summarized. © 2013 The Society for Biotechnology, Japan.

    DOI: 10.1016/j.jbiosc.2013.06.011

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  21. Behavior of Chemical Reagents in a Chemical Laboratory using Radio Frequency Identification System and Web Cameras‐A Case Study Reviewed

    根津友紀子, 林瑠美子, 大島義人

    環境と安全(Web)   Vol. 5 ( 1 ) page: 9-17 (J-STAGE)   2014

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    Language:Japanese  

    DOI: 10.11162/daikankyo.13G1201

    J-GLOBAL

  22. Analysis of acid-catalyzed dehydration of formic acid in hot compressed water based on density functional theory Reviewed

    Tatsuya Fujii, Rumiko Hayashi, Yoshito Oshima

    Journal of Supercritical Fluids   Vol. 84   page: 190 - 194   2013.12

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    Publishing type:Research paper (scientific journal)   Publisher:ELSEVIER SCIENCE BV  

    An acid-catalyzed dehydration mechanism was investigated for formic acid decomposition through calculations based on density functional theory. In previous experimental investigations, formic acid dehydration in hot compressed water was reported to proceed faster at pressures >30 MPa. Higher concentration of hydrogen ions because of the large ion product of water at high pressure was believed to contribute to the acceleration of the dehydration reaction. In this study, the structures and energies of the transition states and intermediates were determined through calculations based on density functional theory with the B3LYP/6-311+G(2d,p) level of theory. A comparison of their threshold energies indicated that the dehydration proceeded via the protonation of hydroxyl oxygen, and that the acid-catalyzed dehydration was energetically more favored than the water-catalyzed mechanism. These results suggested that the abundant hydrogen ions in hot compressed water at high pressure accelerated the dehydration occurring via an acid-catalyzed formic acid dehydration mechanism. © 2013 Elsevier B.V.

    DOI: 10.1016/j.supflu.2013.10.005

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  23. Statistical Analysis on ′′Structure-to-Hazards′′ Image of Chemicals by Experts of Chemistry in Universities. Reviewed

    根津友紀子, 林瑠美子, 大島義人

    環境と安全(Web)   Vol. 4 ( 3 ) page: 185-194 (J-STAGE)   2013

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    DOI: 10.11162/daikankyo.13G0703

    J-GLOBAL

  24. Measures against increased environmental radiation dose by the TEPCO Fukushima Dai-ichi NPP accident in some local governments in the Tokyo metropolitan area: focusing on examples of both Kashiwa and Nagareyama cities in Chiba prefecture Reviewed

    T. Iimoto, H. Fujii, S. Oda, T. Nakamura, R. Hayashi, R. Kuroda, M. Furusawa, T. Umekage, Y. Ohkubo

    Radiation Protection Dosimetry   Vol. 152 ( 1-3 ) page: 210 - 214   2012.11

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    Publishing type:Research paper (scientific journal)   Publisher:Oxford University Press (OUP)  

    DOI: 10.1093/rpd/ncs224

  25. Effects of pressure on decomposition of formic acid in sub- and super-critical water Reviewed

    Tatsuya Fujii, Rumiko Hayashi, Shin Ichiro Kawasaki, Akira Suzuki, Yoshito Oshima

    Journal of Supercritical Fluids   Vol. 71   page: 114 - 119   2012.11

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    Publishing type:Research paper (scientific journal)   Publisher:ELSEVIER SCIENCE BV  

    The effects of pressure on formic acid decomposition in sub- and super-critical water from near the critical pressure to extremely high pressures (20-100 MPa) at temperatures of 380 and 400 °C were investigated. Near the critical pressure, the dehydration and decarboxylation rates decreased with increasing pressure. The apparent activation volumes near the critical pressure were high where the isothermal compressibility of water was large, implying that formic acid attracts water molecules better than the transition state does, and that the partial molar volume of the transition state is larger than those of the reactants. At higher pressures, dehydration rate increased with increasing pressure. Comparisons with experimental results for HCl addition at constant pressure suggest that dehydration proceeds via an ionic reaction at high pressures. The pressure may affect formic acid decomposition in supercritical water negatively through solvation effects near the critical pressure, and positively through ionic reactions above 30 MPa. © 2012 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.supflu.2012.07.020

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  26. Measurements of NO2 Concentration on Road and its Influence on Car Cabin and Surrounding Residential Area Reviewed

    山田裕之, 林瑠美子, 戸野倉賢一

    大気環境学会誌   Vol. 47 ( 1 ) page: 67 - 74   2012.1

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    Language:Japanese  

    DOI: 10.11298/taiki.47.67

    J-GLOBAL

  27. Degradation of soy sauce cake by subcritical water treatment Reviewed

    Tatsuya Fujii, Shintaro Take, Rumiko Hayashi, Yoshito Oshima

    Journal of Chemical Engineering of Japan   Vol. 45 ( 1 ) page: 34 - 40   2012

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:SOC CHEMICAL ENG JAPAN  

    The present study investigates the degradation of soy sauce cake, which is the waste obtained during soy sauce manufacturing, in subcritical water (170-300°C, 10 MPa). In the experiments performed at a constant temperature, the yields of the identified saccharides were lower than the total sugar yield. This suggested that saccharides were recovered mainly as oligomers. We performed a two-step experiment in which the holding temperature was 200°C and 260°C in the first and second steps, respectively. Most of the hemicellulose-derived saccharides were detected in the fraction treated at 200°C, while glucose was detected in the fraction treated at both of the abovementioned temperatures. The total sugar yield in the aforementioned experiment was higher than that obtained in other experiments performed at a constant holding temperature, suggesting that stepwise elevation of the holding temperature facilitates the recovery of valuable compounds from biomass. © 2012 The Society of Chemical Engineers, Japan.

    DOI: 10.1252/jcej.10we310

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  28. Risk Management on Radiation Under Prolonged Exposure Situation ―Focusing on the Tokyo Metropolitan Area in Japan Under the TEPCO Fukushima Dai-ich NPP Accident― Reviewed

    Takeshi Iimoto, Rumiko Hayashi, Reiko Kuroda, Mami Furusawa, Tadashi Umekage, Yasushi Ohkubo, Hiroyuki Takahashi, Takashi Nakamura

      Vol. 11 ( 1 ) page: 33 - 36   2012

  29. Water density effects on methanol oxidation in supercritical water at high pressure up to 100 MPa Reviewed

    Tatsuya Fujii, Rumiko Hayashi, Shin Ichiro Kawasaki, Akira Suzuki, Yoshito Oshima

    Journal of Supercritical Fluids   Vol. 58 ( 1 ) page: 142 - 149   2011.8

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    Publishing type:Research paper (scientific journal)   Publisher:ELSEVIER SCIENCE BV  

    Reaction kinetics of methanol oxidation in supercritical water at high pressure condition (420 °C; 34-100 MPa; ρ = 300-660 kg/m ) was investigated. Pseudo-first order rate constant for methanol decomposition increased with increasing water density. Effects of supercritical water on the reaction kinetics were investigated using a detailed chemical kinetics model. Incorporating the effect of diffusion in a reduced model revealed that overall kinetics for SCWO of methanol is not diffusion-limited. Roles of water as a reactant were also investigated. The dependence of sensitivity coefficient for methanol concentration and rate of production of OH radical on water density indicated that a reaction, HO + H O = OH + H O , enhanced the OH radical production and thereby facilitated the decomposition of methanol. It is presumed that concentration of key radicals could be controlled by varying pressure intensively. © 2011 Elsevier B.V. All rights reserved. 3 2 2 2 2

    DOI: 10.1016/j.supflu.2011.04.004

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  30. Detection of explosives using a vacuum ultraviolet ionization time-of-flight mass spectrometry: (VUV-TOFMS) Reviewed

    Rumiko Hayashi, Wasana Kowhakul, Akio Susa, Mitsuo Koshi

    Science and Technology of Energetic Materials   Vol. 70 ( 3-4 ) page: 62 - 67   2009

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:JAPAN EXPLOSIVES SOC  

    In recent years, real-time monitoring devices for explosives are highly needed to safeguard against terrorism. The vacuum ultra-violet single photon ionization time-of-flight mass spectrometry (VUV-SPI-TOFMS) is expected as one of the attractive options for rapid and sensitive detection of explosives. Especially for 2,3-dimethyl-2,3-dinitrobutane (DMNB) which is explosive taggant species, it is very important to know its mass spectrum pattern for the practical applications. To evaluate the possibility of explosives detection using the VUV-SPI-TOFMS at 10.5 eV ionization energies of typical explosives and explosives-related compounds (ERCs) were estimated by density functional theory (DFT) calculations. From the calculation results it is suggest that most of explosives and ERCs can be ionized with a 10.5 eV photon energy. Though calculated ionization energy of DMNB is 9.38 eV according to a DFT calculation a clear parent peak is not observed in the mass spectrum of DMNB measured by the VUV-SPI-TOFMS at 10.5 eV. Instead many peaks which include the thermal decomposition products are observed in the mass spectrum of DMNB. From the DFT calculations it is shown that a peak at m/z=84 cation which is caused by the elimination of two NO groups can be produced by the ionization at 10.5 eV. 2

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  31. Contribution of ionic reactions to sub- and supercritical water oxidation of phenol Reviewed

    Rumiko Hayashi, Kosei Ohkuma, Kenichi Tonokura, Yoshito Oshima

    Journal of Chemical Engineering of Japan   Vol. 40 ( 7 ) page: 556 - 564   2007.7

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:SOC CHEMICAL ENG JAPAN  

    The contribution of ionic reactions to phenol oxidation has been investigated in subcritical and supercritical water. From the experiments conducted at 24.7 MPa, it was found that the phenol conversions at 360°C were slightly higher than that at 400°C. We calculated the concentration of phenolate anion at 24.7 MPa using semiempirical model reported by Sue et al. (2002). The calculated concentration of phenolate anion at 360°C is about seventh order of magnitude higher than that at 400°C because of the high ion product of water at 360°C. The electron transfer (ET) reaction (C H O + O =C H O + O ) was investigated as one of the reasons for the enhancement of phenol oxidation in subcritical water. We estimated the equilibrium constant ofthe ET reaction using density functional theory calculations, which suggests that the ET reaction should be taken into consideration in the region of high ion product of water. We also discussed the dimerization reaction as consumption reactions of phenoxy radical and other reactions involving inorganic ion species such as O , OH and HO . When phenoxy radical and O are produced effectively, these reactions could be more favorable id subcritical water than in supercritical water. From these discussions, phenol oxidation in subcritical water could be enhanced by the ionic reaction mechanism because of a high ion product of water. Copyright © 2007 The Society of Chemical Engineers, Japan. 6 5 2 6 5 2 2 2 2 - - - - - - -

    DOI: 10.1252/jcej.40.556

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  32. Kinetic analysis on alcohol concentration and mixture effect in supercritical water oxidation of methanol and ethanol by elementary reaction model Reviewed

    Rumiko Hayashi, Masato Onishi, Masakazu Sugiyama, Seiichiro Koda, Yoshito Oshima

    Journal of Supercritical Fluids   Vol. 40 ( 1 ) page: 74 - 83   2007.2

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    Publishing type:Research paper (scientific journal)   Publisher:ELSEVIER SCIENCE BV  

    Reaction kinetics of methanol and ethanol oxidation in supercritical water at 520-530 °C and 24.7 MPa were investigated both experimentally and by computational simulation. Furthermore, studies were performed on the oxidation of the two alcohols in binary mixtures. For the methanol system, experimental data showed that the methanol conversion decreased with increasing initial methanol concentration in the low concentration range (from 6.48 × 10 to 3.94 × 10 mol/l), whereas the conversion increased for initial concentrations in the high concentration range (from 2.23 × 10 to 1.55 × 10 mol/l). Kinetic analyses based on the elementary reaction model showed that production of OH from the reaction of H O with HO seemed to play an important role at the low methanol concentrations and that the characteristic dependence of methanol conversion on initial methanol concentration was due to the very high concentration of H O in supercritical water oxidation of methanol. For the binary system, it was found that methanol conversion was accelerated by ethanol addition whereas ethanol oxidation was slightly retarded by the presence of methanol. Calculation with an elementary reaction model could reproduce the phenomenological mutual effects of alcohols with respect to reaction rates, and it was found that the acceleration/retardation effect of conversions could be well characterized by the time profile of OH radical, rather than HO radical. © 2006 Elsevier B.V. All rights reserved. -6 -5 -4 -3 2 2 2 2

    DOI: 10.1016/j.supflu.2006.04.006

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  33. A novel on-site system for the treatment of pharmaceutical laboratory wastewater by supercritical water oxidation. Reviewed

    Teerada Ruamchat, Rumiko Hayashi, Somkiat Ngamprasertsith, Yoshito Oshima

    Environmental sciences : an international journal of environmental physiology and toxicology   Vol. 13 ( 5 ) page: 297 - 304   2006

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    Publishing type:Research paper (scientific journal)  

    For the on-site treatment of laboratory waste, we have been developing a compact-sized reaction system for the treatment of laboratory wastewater using supercritical water oxidation (SCWO) technology. Pharmaceutical laboratory wastewater is one of the most difficult wastewaters to treat because of its high concentration of halogenated organic compounds. We proposed a new cascade process in which two reactors are consecutively combined, carrying out hydrolysis in the first reactor followed by SCWO in the second reactor, for the complete removal of halogenated organic compounds. Dichloromethane was chosen as a representative model of chlorinated compounds. There have been many previous studies on the hydrolysis of dichloromethane, which results in the coproduction of formaldehyde and HCl. However, there has been less investigation on the kinetics of formaldehyde oxidation in supercritical water. In this study, we focus on the oxidation of formaldehyde in supercritical water with and without a catalyst. As a result, formaldehyde can be completely decomposed at 400 degrees C and 25 MPa within a very short contact time in a heterogeneous system with a MnO(2) catalyst.

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  34. Pilot-scale laboratory waste treatment by supercritical water oxidation. Reviewed

    Yoshito Oshima, Rumiko Hayashi, Kazuo Yamamoto

    Environmental sciences : an international journal of environmental physiology and toxicology   Vol. 13 ( 4 ) page: 213 - 218   2006

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    Supercritical water oxidation (SCWO) is a reaction in which organics in an aqueous solution can be oxidized by O2 to CO2 and H2O at a very high reaction rate. In 2003, The University of Tokyo constructed a facility for the SCWO process, the capacity of which is approximately 20 kl/year, for the purpose of treating organic laboratory waste. Through the operation of this facility, we have demonstrated that most of the organics in laboratory waste including halogenated organic compounds can be successfully treated without the formation of dioxines, suggesting that SCWO is useful as an alternative technology to the conventional incineration process.

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  35. Mixture effect on kinetics and mechanism of supercritical water oxidation analyzed by elementary reaction modeling

    R. Hayashi, Y. Oshima

    7th World Congress of Chemical Engineering, GLASGOW2005, incorporating the 5th European Congress of Chemical Engineering     page: 429   2005

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    Publishing type:Research paper (international conference proceedings)  

    Supercritical Water Oxidation (SCWO) is a promising technology for waste treatment process in which aqueous organic waste can be rapidly and completely decomposed. Experiments of SCWO of mixtures were conducted, and their kinetics and mechanisms were analyzed by simulation based on elementary reaction model. In the case of alcohol mixtures, methanol oxidation was accelerated in the presence of ethanol or 1-propanol and the extent of acceleration became larger as increasing the ratio of addition. On the other hand, the decomposition rate of ethanol or 1-propanol was retarded in the presence of methanol, but the extent of smaller than the effect to methanol. In the case of phenol/alcohol mixture, the phenol conversion was not affected by the alcohol existence, but the decomposition rate of alcohol was retarded. In the presence of alcohol, the production rate of dimers was retarded. These results suggested that the alcohols could be a good race-enhancer in SCWO. This is an abstract of a paper presented at the 7th World Congress of Chemical Engineering (Glasgow, Scotland 7/10-14/2005).

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MISC 5

  1. 名古屋大学における化学物質管理の取り組み

    林瑠美子

    月刊化学物質管理   Vol. 5 ( 2 ) page: 82 - 91   2020.9

  2. 高温高圧水中の電解酸化反応を用いた廃液の無害化処理手法の検討

    林瑠美子

    天野工業技術研究所年次報告   Vol. 2017   page: 57 - 63   2018

  3. 超臨界流体研究開発の最前線 超臨界水中の酸化・分解反応に与える水の影響

    林瑠美子, 藤井達也, 大島義人

    化学工学   Vol. 77 ( 4 ) page: 266 - 268   2013.4

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    Language:Japanese  

    J-GLOBAL

  4. Electrical Treatment of Various Alcohols in Sub-critical Water for Understanding Electrochemical Reaction Behavior Reviewed

    Asli Yuksel, Wahyudiono, Rumiko Hayashi, Mitsuru Sasaki, Motonobu Goto

    Proceedings of International Symposium on EcoTopia Science     page: 240711   2007.12

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    Language:English   Publishing type:Research paper, summary (national, other academic conference)  

  5. 超臨界水酸化反応における水の役割と反応機構解析

    林瑠美子, 大島義人

    高温高圧流体技術研究会LETTER   Vol. 23   2007.1

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    Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

Presentations 7

  1. 大学の環境安全衛生管理の過去・現在・未来 ~大切な仲間を守るために~ Invited

    第26回東北ジョイント夏季セミナー  2021.9.9  化学工学会東北支部

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    Event date: 2021.9

    Language:Japanese  

    Venue:オンライン   Country:Japan  

  2. 高温高圧水中の電解酸化反応を用いた廃液の無害化処理手法の検討 Invited

    林瑠美子

    第3回天野フォーラム  2019.9 

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    Event date: 2019.9

    Country:Japan  

  3. Analytical Study of organic compounds in cigarette smoke by soft ionization mass spectrometry Invited International conference

    Rumiko Hayashi, Yuji Mishima, Yuta Matsumoto, Kenichi Tonokura

    The 14th International Symposium on Persistent Toxic Substances (ISPTS2017)  2017.9 

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    Event date: 2017.9

    Presentation type:Oral presentation (invited, special)  

    Venue:Nagoya   Country:Japan  

  4. 超臨界水中の酸化・分解反応に対する水の役割の解明とそのアプローチ

    林瑠美子

    第11回サマースクール  2012.8  (社)化学工学会 超臨界流体部会

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    Event date: 2012.8

    Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Country:Japan  

  5. 東京大学薬品管理システムUTCRISについて Invited

    林瑠美子

    第30回大学等環境安全協議会総会 実務者連絡会研究集会  2012.7.26 

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    Event date: 2012.7

    Presentation type:Symposium, workshop panel (nominated)  

    Country:Japan  

  6. 東京大学の安全衛生に関する取り組みと化学物質管理について Invited

    Rumiko Hayashi

    平成23年度中国・四国地区国立大学法人等労働安全衛生協議会  2011.11 

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    Event date: 2011.11

    Presentation type:Symposium, workshop panel (nominated)  

    Country:Japan  

  7. Effect of water as a reactant on reaction mechanism in supercritical water oxidation of alcohols Invited International conference

    Rumiko Hayashi, Yoshito Oshima

    1st International Symposium on Applications of Supercritical Fluids in Green Chemistry and Material Science  2007.3 

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    Event date: 2007.3

    Presentation type:Oral presentation (invited, special)  

    Venue:Beijing   Country:China  

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Research Project for Joint Research, Competitive Funding, etc. 5

  1. 大学・研究機関向け安全衛生保護具選定事例集の作成

    2019

    プロジェクト  大学・研究機関向け安全衛生保護具選定事例集の作成

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    Authorship:Principal investigator  Grant type:Competitive

  2. ラベルへの化学物質の危険有害性情報の付加に関する調査と開発及びその効果の測定

    2017 - 2019

    厚生労働科学研究費補助金 

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    Authorship:Coinvestigator(s)  Grant type:Competitive

  3. 高温高圧水中の電解酸化反応を用いた廃液の無害化処理手法の検討

    2017

    研究助成事業 

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    Authorship:Principal investigator  Grant type:Competitive

  4. 大学における障害者雇用に伴う事故防止に向けた取り組みに関する調査

    2016 - 2017

    プロジェクト 

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    Authorship:Principal investigator  Grant type:Competitive

  5. 超臨界水酸化反応による含窒素化合物の分解における処理温度の低温化及び亜酸化窒素生成抑制手法の検討

    2010.11 - 2011.10

    若手研究助成 

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\1000000

KAKENHI (Grants-in-Aid for Scientific Research) 8

  1. Development of Modules for Risk Recognition to Be Internationally Shared for Optimization on Decision Making Process

    Grant number:19KK0057  2019.10 - 2022.3

    Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))

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    Authorship:Coinvestigator(s) 

  2. 教育的活用が可能な事故・不祥事事例の新しい分類法及び情報提供システムの開発

    Grant number:17K18624  2017.6 - 2022.3

    挑戦的研究(萌芽)

    林 瑠美子

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    Authorship:Principal investigator 

    Grant amount:\5590000 ( Direct Cost: \4300000 、 Indirect Cost:\1290000 )

  3. Proposal of Safety Education and Management System for Human Resource Development of Autonomous Researchers

    Grant number:25242014  2013.10 - 2016.3

    Oshima Yoshito

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    Authorship:Coinvestigator(s) 

    This study was conducted to propose a reasonable and effective safety education system so that researchers themselves can minimize the risks involved with their work, and to help provide an appropriate working environment at institutions where research education is conducted. We have conducted behavioral science analysis on lab work to clarify the mechanisms that cause accidents in the lab, and investigated the conditions where chemical substances are used by employing various sensors and measurement equipment. To expand the safety management/education system we are building a safety management check method which fosters voluntary risk management, designing labs for both resilience and flexibility, surveying the actual safety management and education for international students and foreign researchers and considering the development of experiment simulation as a tool for safety education.

  4. Development of Comprehensive Education System Toward Radiation Safety

    Grant number:25282034  2013.4 - 2016.3

    IIMOTO Takeshi

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    Authorship:Collaborating Investigator(s) (not designated on Grant-in-Aid) 

    The purpose of this study is to develop radiation education modules which are requested by school teachers who are the core of the human resource development as a foundation for safety culture improvement.
    In the viewpoint of the field of radiation measurement, we developed a simple radiation detector for school education, based on the mechanism of the natural atmospheric pressure air GM counter. In the viewpoint of the field of education and social psychology, we investigated the latest situation of (1) information spread activities on radiation science and technology in various facilities, (2) nuclear and radiation education for secondary school students and teachers in foreign countries, and (3) expert development in the nuclear and radiation fields. We developed a simple tool for radiation education and practice modules. We utilized the modules in domestic and foreign secondary schools experimentally.

  5. Measurement of carbon isotope ratio in foods with supercritical water oxidation

    Grant number:25620104  2013.4 - 2016.3

    Tonokura Kenichi

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    Authorship:Coinvestigator(s) 

    Carbon stable isotope ratio can provide information to estimate provenance because growing environment of farm/marine product is reflected in carbon stable isotope ratio. In this study, a novel method that farm/marine product is oxidized into CO2 using supercritical water oxidation and carbon stable isotope ratio of obtained CO2 using near infrared laser absorption spectroscopy is proposed. Reaction condition of supercritical water oxidation and carbon stable isotope ratio of CO2 contained in generated gas was studied using model substances and polished rices. Over 99.72 % of carbon contained in polished rice was successfully oxidized into CO2 with no other gas derived from carbon contained in polished rice by supercritical water oxidation. Carbon stable isotope ratio of generated CO2 was sufficiently close to the value conventionally obtained. From these results, validity was shown that supercritical water oxidation was applied as pretreatment of measuring carbon stable isotope ratio.

  6. Approach for new method of chemicals management based on modeling of utilization of chemicals in university laboratory

    Grant number:23650500  2011 - 2012

    HAYASHI Rumiko

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    Authorship:Principal investigator 

    Grant amount:\3250000 ( Direct Cost: \2500000 、 Indirect Cost:\750000 )

    In order to describe quantitatively how the users in university laboratory recognize the chemicals risk and property, and how they treat chemicals, we conducted a questionnaire survey, a measurement of concentration of organic solvents in a laboratory environment, and a data logging of reagent position in laboratory. It was shown that these methods were appropriate not only for quantitative description of laboratory and experimenters’ recognition of chemicals to prevents risks in experiments, but also they will be essential information for practical and reasonable management method of chemicals and effective educational method for experimenters in university laboratory.

  7. Development of onsite measurement system of atmospheric nitrous acid

    Grant number:22310007  2010 - 2012

    TONOKURA Kenichi

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    Authorship:Coinvestigator(s) 

    Nitrous acid (HONO) is a significant source of hydroxyl (OH) radicals and an indoor pollutant. HONO is difficult to accurately measure since the species is prone to losses due to its high reactivity and solubility. Thus, this research concentrates on the development of a measurement system utilizing cavity ring down spectroscopy (CRDS) and differential optical absorption spectroscopy (DOAS). The former is used to provide a basic detection limit of HONO and to determine HONO’s absorption cross-section in the mid-IR region while the latter is used to increase the sensitivity of the system and improve on the detection limit. The study also includes examination of the effects of temperature, carrier gas flow rate and reactant amount on the HONO synthesis. Current results show an encouraging detection limit and that the reaction synthesis yields HONO of satisfactory purity.

  8. Development for diagnostic check system on「 Operation and Management」 of organization

    Grant number:20510155  2008 - 2010

    KOYAMA Fujio

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    Authorship:Coinvestigator(s) 

    Based on the research of the relation of Organization factor and Human factor, we developed the new diagnostic check system for healthy organization management and operation.

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Teaching Experience (On-campus) 3

  1. Environmental Risk

    2021

  2. Environmental Risk

    2019

  3. 化学基礎II

    2019

Teaching Experience (Off-campus) 5

  1. SDセンシング技術特論(集中講義)

    2016 - 2020 Toyohashi University of Technology)

  2. 学術フロンティア講義「環境安全入門ー身のまわりのリスクから学び、安心へつなげるー」」

    2016 - 2017 The University of Tokyo)

  3. 全学自由研究ゼミナール「環境安全入門ー身のまわりのリスクから学び、安心へつなげるー」」

    2013 - 2014 The University of Tokyo)

  4. 環境・生命安全学(集中講義)

    2012 - 2014 Toyohashi University of Technology)

  5. 全学自由研究ゼミナール「環境・安全と安心の科学」

    2010 - 2011 The University of Tokyo)

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    Level:Undergraduate (liberal arts) 

 

Social Contribution 2

  1. 情報誌「研究生活」編集長

    Role(s):Chief editor

    特定非営利活動法人 研究実験施設・環境安全教育研究会(REHSE)  研究生活  2013

  2. 化学工学会誌「化学工学」編集学生委員

    Role(s):Editer

    (社)化学工学会  化学工学  2003.4 - 2004.3

Academic Activities 5

  1. (社)化学工学会 超臨界流体部会エネルギー分科会副リーダー

    Role(s):Planning, management, etc.

    2020

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  2. (社)化学工学会 代議員

    2017

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  3. (社)化学工学会 超臨界流体部会エネルギー分科会リーダー

    Role(s):Planning, management, etc.

    2015 - 2019

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  4. (社)化学工学会 超臨界流体部会 幹事

    Role(s):Planning, management, etc.

    2013.4

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  5. 化学物質管理担当者連絡会 世話人

    Role(s):Planning, management, etc.

    2009.11

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    Type:Academic society, research group, etc.