Updated on 2024/12/25

写真a

 
Nishijima Shigehiro
 

Education

  • Osaka University   Doctor's Course   Completed

    - 1982.3

Research History

  • Fukui University of Technology   Professor

    2017.4

Qualification acquired

  • Gas Chief Engineer (first and second and third kind)

  • Chief Person of Radiation Handling （first and second kind）

 

Papers

  • Investigation on high gradient magnetic separation for CRUD material in nuclear reactor Reviewed International journal

    S.Nishijima, N.Nomura, F.Mishima, T.Sekine

    Progress in Superconductivity and Cryogenics   26 ( 3 )   8 - 11   2024.9

    　More details

    In this study, we investigated high-gradient magnetic separation as a method for separating crud in high-temperature,
    high-pressure water inside a nuclear reactor. Corrosion products in the coolant circulate through the system and attach to the reactor
    core, where they are activated by neutron irradiation. The activated corrosion products then desorb from the core and circulate
    through the cooling system again. The corrosion product in the reactor water or piping system is called crud. Crud is the main
    source of radiation exposure for radiation workers. Removal and recovery of crud is important in decommissioning plants that have
    been in operation for service life, and new technologies are also desired. A method for separating activated ions adsorbed on ion
    exchange resins in nuclear reactors using magnetic separation is developed. In this method, the ion exchange resin is washed with
    acid, the activated ions are adsorbed from the washing water using adsorbents, and then separated magnetically. Rudimentary
    experiments were conducted to investigate the possibility of this method.

  • Study on irradiation effect of insulating materials for fusion　superconducting magnets: temperature dependence of mechanical strength Reviewed International journal

    Y Akiyama, A Ohta, Y Manabe, F Sato, A Iwamoto, S Imagawa, H Utoh, S Nishijima

    IOP Conf. Series: Materials Science and Engineering   1302   1 - 9   2024

    　More details

    Insulating materials used in the superconducting magnets of fusion reactors are
    exposed to cryogenic temperatures, intense radiations, and strong electromagnetic forces. In the
    experimental fusion reactor ITER, resin mixed with epoxy resin (EP) and cyanate ester (CE)
    (CE content: 40 wt.%) is used as a matrix of glass reinforced plastics (GFRP) as an insulating
    material to maintains mechanical strength and insulating performance in such environments.
    This composition ratio is basically determined by strength tests at room temperature or liquid
    nitrogen temperature, so the study at liquid helium temperature is required. In this study, the
    effects of the resin composition of GFRP on interlaminar shear stress (ILSS) at room temperature,
    liquid nitrogen temperature, and liquid helium temperature before and after γ-ray irradiation were
    evaluated. The ILSS after γ-ray irradiation of EP showed a maximum value at liquid helium
    temperature, while the addition of CE caused the ILSS after irradiation to show a maximum
    value at liquid nitrogen temperature. It was also shown that the temperature dependence of the
    ILSS decreased with increasing CE content. The results showed that the addition of CE to EP
    contributes to the improvement of radiation resistance, but excessive addition of CE promotes
    embrittlement at LHeT.

  • Separation of micro-plastics from sea water using electromagnetic archimedes force Reviewed International journal

    N.Nomura, F.Mishima, S.Nishijima

    Progress in Superconductivity and Cryogenics   25 ( 3 )   18 - 21   2023.9

  • Study on multi-stage magnetic separation device for paramagnetic materials operated in low magnetic fields Reviewed International journal

    F.Mishima, A.Nagahama, N.Nomura, S.Nishijima

    Progress in Superconductivity and Cryogenics   25 ( 3 )   13 - 17   2023.9

  • Research and development of new magnetic filter for high gradient magnetic separation Invited Reviewed International journal

    S.Nishijima, F.Mishima, N.Nomura

    Progress in Superconductivity and Cryogenics   25 ( 3 )   1 - 6   2023.9

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    We have been developing a new magnetic filter so that small sized paramagnetic substances can be separated even in a low magnetic field (lower than 2T). The developed filter is a packed ferromagnetic filament with a triangular cross section. The filament has a diameter of 120 μm and a length of 3 mm, and is mechanically packed with a volume ratio of 17.6%. Using this filter, a magnetic separation experiment of hematite was carried out using a superconducting magnet at the field of 2T. Similarly, magnetic separation was performed using a conventional magnetic filter. It became clear that the separation efficiency of newly developed filter is high as that of conventional mesh filter. The smaller sized hematite (<3μm) could be separated though conventional mesh filter could not separate.

  • Study of microp-plastics separation from sea water with electro-magnetic force Reviewed

    N.Nomura, F.Mishima, S.Nishijima

    IEEE Transaction on Applied Superconductivity   32 ( 6 )   3700405   2022.9

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    The method of removing micro-plastics from sea water has been developed using electro-magnetic force. Plastics are difficult to decompose and put a great load on the marine environment. Especially a plastic with a size of 5mm or less is defined as micro-plastics and are carried by ocean currents over long distances, causing global pollution. These are not easily decomposed in the natural environment. The Lorentz force was generated in simulated sea water and its reaction force was applied to the micro-plastic to control their motion. The basic principle of this separation method has already been confirmed by basic experiments. In this study, the magnetic field and current density required to treat seawater containing micro-plastics using a superconducting magnet with a bore diameter of 5cm were investigated by simulation. Plastic particles with a diameter of more than 200 μm were targeted for separation, and various conditions for separation were investigated by simulation. As a result, it was shown that good separation efficiency was obtained under the following conditions: flow velocity of 0.2m/s, electrode size of 150mm, current density of 0.93A/cm2, and applied magnetic field of 3T.

  • Development of novel magnetic separation for paramagnetic particles using the selection tube Reviewed

    N.Nomura, F.Mishima, S.Nishijima

    IEEE Transaction on Applied Superconductivity   32 ( 6 )   3700204   2022.9

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    Generally, in order to control and separation of paramagnetic substances by magnetic force, a superconducting high gradient magnetic separation system applied magnetic field of about 5T over is required. In this study, we aim to apply a low magnetic field for magnetic separation of paramagnetic substances. We propose the novel separation method, which is applying a magnetic field to the selection tube, aiming for more precise and easier separation than the conventional High Gradient Magnetic Separation System (HGMS). Selection tube can separate particle mixture into each kinds of particles by the balance of drag force, buoyancy and gravity depending on flow velocity, particle size, shape and specific weight. Since the particles are apparent weightless stage, they can be captured with a relatively small magnetic force. Firstly, we showed the effectiveness of open-gradient magnetic separation (OGMS: applied magnetic flux density 1.3T) under the selection tube with using colored glass imitated target substance. The experimental results were found to show good separation efficiency. Eventually, we tested the HGMS obtained by improving the novel magnetic separation method, where a low magnetic field applied (maximum magnetic flux density 0.5T) is applied to magnetic filter (wire diameter 0.8mm, 1.5 mesh, SUS 430) installed in the selection tube. The effective separation of paramagnetic glass (volume magnetic susceptibility: +3.17x10-4) was performed successfully with the combination of the selection tube and HGMS applied low magnetic field.

  • Magnetic separation device for paramagnetic materials operated in a low magnetic field Reviewed

    F.Mishima, N.Nomura, S.Nishijima

    Progress in Superconductivity and Cryogenics   24 ( 3 )   19 - 23   2022.9

    　More details

    We have been developing a magnetic separation device that can be used in low magnetic fields for paramagnetic materials. Magnetic separation of paramagnetic particles with a small particle size is desired for volume reduction of contaminated soil in Fukushima or separation of iron scale from water supply system in power plants. However, the implementation of the system has been difficult due to the needed magnetic fields is high for paramagnetic materials. This is because there was a problem in installing such a magnet in the site. Therefore, we have developed a magnetic separation system that combines a selection tube and magnetic separation that can separate small sized paramagnetic particles in a low magnetic field. The selection tube is a technique for classifying the suspended particles by utilizing the phenomenon that the suspended particles come to rest when the gravity acting on the particles and the drag force are balanced when the suspension is flowed upward. In the balanced condition, they can be captured with even small magnetic forces. In this study, we calculated the particle size of paramagnetic particles trapped in a selection tube in a high gradient magnetic field. As a result, the combination of the selection tube and HGMS (High Gradient Magnetic Separation-system) can separate small sized paramagnetic particles under low magnetic field with high efficiency, and this paper shows its potential application.

  • Development of novel magnetic filter for paramagnetic particles in high gradient magnetic separation Reviewed

    S.Nishijima, N.Nomura

    Progress in Superconductivity and Cryogenics   24 ( 3 )   7 - 11   2022.9

  • Study on irradiation effect of insulating materials for fusion superconducting magnets -interlaminar shear strength at liquid helium temperature- Reviewed International journal

    Y.Akiyama, N.Akazawa, Y.Kunitoku,Y.Manabe,F.Sato,A.Iwamoto, S.Imagawa, S.Nishijima

    Radiation Physics and Chemistry   199   110372   2022.6

  • Study of micro-plastics separation from sea water with electro-magnetic force Reviewed

    Naoki Nomura, Fumihito Mishima, Shigehiro Nishijim

    Progress in Superconductivity and Cryogenics   23 ( 3 )   10 - 13   2021.9

  • Removal of iron oxide scale from boiler feed-water in thermal power plant by high gradient magnetic separation: field experiment Reviewed

    Yoko Akiyama, Suqin Li, Koshiro Akiyama, Tatsuya Mori, Hidehiko Okada, Noriyuki Hirota, Tsuyoshi Yamaji, Hideki Matsuura, Seitoku Namba, Tomokazu Sekine, Fumihito Mishima, Shigehiro Nishijima

    Progress in Superconductivity and Cryogenics   23 ( 3 )   14 - 19   2021.9

  • Removal of Iron Oxide Scale From Boiler Feed-Water in Thermal Power Plant by Magnetic Separation-Separation Conditions of Oxygenated Treatment Scale Reviewed

    Koshiro Akiyama, Tatsuya Mori , Tomoyuki Terai, Yoko Akiyama , Hidehiko Okada , Noriyuki Hirota, Tsuyoshi Yamaji, Hideki Matsuura, Seitoku Namba, Tomokazu Sekine, Fumihito Mishima, Shigehiro Nishijima

    IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY   31 ( 5 )   2021.7

  • Removal of Iron Oxide Scale From Feed-Water in Thermal Power Plant by High-Gradient Magnetic Separation: Scale-Up Effect Reviewed

    Tatsuya Mori, Junya Yamamoto, Yoko Akiyama, Hidehiko Okada, Noriyuki Hirota, Hideki Matsuura, Seitoku Namba, Tomokazu Sekine, Fumihito Mishima, Shigehiro Nishijima

    IEEE Transactions on Magnetics   56 ( 12 )   1 - 8   2020.12

    　More details

    火力発電所ボイラー給水系からの酸化鉄スケールの除去の模擬実験を行ったが、その模擬試験機のサイズ大きくなった場合でも（50㎜から300㎜に大きくした）同様に扱えるのかを実験的に検討した。

  • Maternal acceptability of radiation exposure to children - relationship with maternal knowledge about radiation exposure influence on children Reviewed

    Chiyuki Kimura, Shigehiro Nishijima

    Memoirs of Fukui University of Technology   ( 50 )   110 - 115   2020.10

  • Development of magnetic separation system for thermal power plants Reviewed

    Hidehiko Okada, Noriyuki Hirota, Yoko Akiyama, Fumihito Mishima, Shigehiro Nishijima, Hideki Matsuura, Seitoku Namba, Tomokazu Sekine

    IEEJ Transactions on electrical and electronics engineering   15 ( 11 )   1655 - 1662   2020.9

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    火力発電所給水系からの酸化鉄スケールの除去を超電導磁気分離システムで実施する際、大量の酸化鉄の除去を実現するための磁気フィルターの設計について検討した

  • Development of magnetic separation system with superconducting magnet for thermal power plants Invited Reviewed

    H.Okada,N.Hirota,Y.Akiyama,F.Mishia,S.Nishijima,H.Matsuura,T.Yamaji,S.Namba, T.Sekine

    Journal of Cryogenics and Superconductivity Society of Japan   55 ( 3 )   179 - 184   2020.5

  • Research and development of concentration and recovery method for phosphor containing rare earth elements using magnetic force control technology Invited Reviewed

    Shigehiro Nishijima, Yoko Akiyama, Fumihito Mishima

    Journal of Cryogenics and Superconductivity Society of Japan   55 ( 3 )   189 - 194   2020.5

  • Possibility of applying superconducting high-gradient magnetic separation to volume reduction of cesium-contaminated soil Invited Reviewed

    Yoko Akiyama, Naoki Nomura, Fumihito Mishima,Shigehiro Nishijima,

    Journal of Cryogenics and Superconductivity Society of Japan   55 ( 3 )   172 - 178   2020.5

  • Removal of Scale from Feed-water in Thermal Power Plant by Magnetic Separation -Analysis of Oxygenated Treatment Scale- Reviewed

    M Hiramatsu, J Yamamoto, Y Akiyama, F Mishima, S Nishijima, H Okada, N Hirota, T Yamaji, H Matsuura, S Namba, T Sekine, Y Kobayashi, M Seto

    Journal of Physics: Conference Series   1293   012079   2019.10

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    火力発電所給水系で特に酸素処理が施されている系内の酸化鉄の評価を行った。超電導磁石を利用したスケール除去装置を開発しているが、その効率的な設置個所を設定するとともにそのシステム設計を行うことが目的である。ヘマタイトとマグネタイト等の混合したスケールの発生を確認し、マグネタイトの含有率の高い低圧ヒータードレイン部に設置することが適切であることを明らかにした。

  • Removal of Iron Scale from Boiler Feed-water in Thermal Power Plant by Magnetic Separation - Large-scale Experiment - Reviewed

    ・ J.Yamamoto, T.Mori, Y.Akiyama, H.Okada, N.Hirota, H.Matsuura, S.Namba, T.Sekine, F.Mishima, S.Nishijima

    IEEE Transactions on Applied Superconductivity   29 ( 5 )   0603705   2019.8

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    火力発電所給水系で発生する酸化鉄スケールを超電導磁気分離法で分離するための研究である。室温ボア40㎝の超電導磁石を利用し、マグネタイトを主成分とする懸濁水を通水し、高効率でスケールを除去できることを実証した。

  • Removal of iron oxide scale from feed-water in thermal power plant using superconducting magnetic separation Reviewed

    S.Nishijima

    Progress in Superconductivity and Cryogenics   21 ( 2 )   22 - 25   2019.6

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    火力発電所給水系の酸化鉄スケールを超電導磁石を利用した磁気分離装置で除去するシステムの構築の研究を行っている。その研究の背景、概要、方向性等について包括的に議論している。

  • Study on irradiation effect of insulating materials for fusion superconducting magnet: Change in electric insulation performance by irradiation Reviewed

    S.Kito, Y.Akiyama, S.Nishijima

    Journal of Physics ；Conferene Series: Material Science and Engineerig   502 ( 012195 )   2019

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    核融合超電導磁石絶縁材料用GFRPならびにフィルムを挿入したGFRPの沿層方向絶縁耐圧を応力下で測定した。試験は室温あるいは液体窒素温度下で実施し、γ線で10MGｙまでの照射を実施した。室温では絶縁耐圧は応力と共に漸減したが、極低温では破壊直前まで絶縁耐圧は低下しなかった。

  • Removal of Iron Scale from Feed-water in Thermal Power Plant by Magnetic Separation- Introduction to Chemical Cleaning Line - Reviewed

    ・ J.Yamamoto, T.Mori, M.Hiramatsu, Y.Akiyama, H.Okada, N.Hirota, H. Matsuura, S.Namba, T.Sekine, F.Mishima, S.Nishijima

    Progress in Superconductivity and Cryogenics   20 ( 2 )   6 - 10   2018

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    超電導磁気分離法を利用して火力発電の給水系に発生する酸化鉄スケールの除去を行い、発電効率の向上を実現し、最終的には二酸化炭素の発生を抑える研究である。大量の酸化鉄スケールの分離を可能とするため、磁気フィルターの設計を行い、所期の性能を実現した。

  • Fundamental study on cancer therapy by blocking newborn blood vessels by magnetic force control Reviewed

    M.Kirimura,　Y.Akiyana, S.Nishijima

    Progress in Superconductivity and Cryogenics   20 ( 2 )   11 - 15   2018

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    ガン治療のための塞栓法として、生体に対し非侵襲性のマグネタイトを新生血管に、体外より磁気力によって誘導する手法の基礎的研究である。100nmのマグネタイトの表面をステアリン酸等で修飾することにより、磁場を印加しない場合は凝集せず、磁場を印加した後は凝集して塞栓に資する塞栓剤を開発し、分岐した複数の血管を模擬した流路を磁場誘導しつつ閉塞させることが可能であることを実証した。

  • Study on Separation of Structural Isomer with Magneto-Archimedes method Reviewed

    T Kobayashi, T Mori, Y Akiyama, F Mishima and S Nishijima

    Journal of Physics ；Conferene Series   871 ( 012018 )   １ - 7   2017

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    高分子の構造異性体を磁気アルキメデス法で分離に成功した

  • Volume reduction of cesium contaminated soil by magnetic separation ? Pretreatment of organic matters ? Reviewed

    H. Horie, K.Yukumatsu, F.Mishima,Y.Akiyama, S.Nishijima, T.Sekiyama, S.Mitsui and M.Kato

    Journal of Physics ；Conferene Series   871 ( 012102 )   １ - ７   2017

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    福島汚染土壌の減容化を磁気分離法を利用して行うための、前処理としての有機物除去について検討した

  • Separation of Flame and Nonflame-retardant Plastics Utilizing Magneto-Archimedes Method Reviewed

    H. Horie, K.Yukumatsu, F.Mishima,Y.Akiyama, S.Nishijima, T.Sekiyama, S.Mitsui and M.Kato

    Journal of Physics ；Conferene Series   871 ( 012103 )   １ - 8   2017

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    福島汚染土壌の減容化を磁気分離法で行うため、前処理としての有機物処理についての研究

▼display all

MISC

  • Is it possible to remove micro-plastics from the ocean effectively?

    Shigehiro Nishijima

    Manufacturing and Technology   72 ( 2 )   27 - 30   2020

Presentations

  • Applicability of magnetic separation to CRUD processing in BWR decommissioning Invited International conference

    S. Nishijima, F. Mishima, N.Nomura, T. Sekine

    The 15th international forum on magnetic force control  2024.9  Technical Institute of Physics and Chemistry CAS

  • Fundamental study on superconducting magnetic separation of paramagnetic materials using a selection tube International conference

    Fumihito Mishima, Naoki Nomura, Shigehiro Nishijima

    2024　37th International Symposium on Superconductivity  2024.12  Cryogenics and Superconductivity Society of Japan

  • Study on a superconducting magnetic selection tube separator for paramagnetic materials Invited International conference

    F. Mishima, N.Nomura, S.Nishijima

    The 15th international forum on magnetic force control  2024.9  Technical Institute of Physics and Chemistry CAS

  • Investigation on High Gradient Magnetic Separation for CRUD Material in Nuclear Reactor Invited International conference

    S. Nishijima, F. Mishima, N.Nomura and T. Sekine

    The 14th international forum on magnetic force control  2023.11 

  • Study of a selection tube magnetic separation method using a paramagnetic fluid International conference

    F. Mishima, N.Nomura, S.Nishijima

    The 14th international forum on magnetic force control  2023.11 

  • Separation of micro-plastics from sea water using electromagnetic Archimedes force International conference

    N.Nomura, F. Mishima , S.Nishijima,

    The 14th international forum on magnetic force control  2023.11 

  • Research on Multi-stage magnetic selection tubes for paramagnetic materials International conference

    Aoi.Nagahama, N.Nomura, S.Nishijima, F. Mishima

    The 14th international forum on magnetic force control  2023.11 

  • Dielectric strength under shear stress of insulating materials for fusion superconducting magnet Invited International conference

    S Nishijima, N Nomura, T Sunagawa, Y Akiyama, A Yamanaka, A Iwamoto, S。Imagawa, K Takahata, H Utoh, Y Sakamoto, M Hirai, Y Toda and Y Toyama

    Cryogenic Engineering Conference / International Cryogenic Material Confecence  2023.7  Cryogenic Engineering Conference / International Cryogenic Material Confecence

  • Study on Irradiation Effect of Insulating Materials for Fusion Superconducting Magnets: Temperature Dependence of Mechanical Strength Invited

    Y Akiyama, A Ohta, Y Manabe, F Sato, A Iwamoto, S Imagawa,　H Utoh, Y Sakamoto, and S Nishijima

    Cryogenic Engineering Conference / International Cryogenic Material Confecence  2023.7  Cryogenic Engineering Conference / International Cryogenic Material Confecence

  • Investigation on High Gradient Magnetic Separation for Crud Material in Nuclear Reactors

    S.Nishijima, N.Nomura, F.Mishima

    The 11th East Asia Symposium on Superconductor Electronics (EASSE 2023)  2023.5 

  • Investigation on High Gradient Magnetic Separation for Crud Material in Nuclear Reactors Invited International conference

    S.Nishijima, N.Nomura, F.Mishima

    The 11th East Asia Symposium on Superconductor Electronics (EASSE 2023)  2023.3  East Asia Symposium on Superconductor Electronics

  • Separation of Micro-plastics from Sea Water Using Lorenz Force-Fabrication of devices and separation experiments-

    N.Nomura, F.Mishima, S.Nishijima

    The 13th International Forum on Magnetic Force Control  2022.11  Korea Electrotechnology Research Institute

  • High gradient magnetic separation in selection tube for paramagnetic materials International conference

    A.Nagahama, N.Nomura, S.Nishijima, F.Mishima

    The 13th International Forum on Magnetic Force Control  2022.11  Korea Electrotechnology Research Institute

  • Study on multi-stage magnetic separation device for paramagnetic materials operated in low magnetic fields International conference

    F. Mishima, A.Nagahama, N.Nomura, S.Nishijima

    The 13th International Forum on Magnetic Force Control  2022.11  Korea Electrotechnology Research Institute

  • Research and Development of New Magnetic Filter for High Gradient Magnetic Separation Invited International conference

    S. Nishijima, N.Nomura, F.Mishima

    The 13th International Forum on Magnetic Force Control  2022.11  Korea Electrotechnology Research Institute

  • Fundamental Research for Composite Materials in Vacuum Environmets International conference

    HIRAI Masaaki, NISHIJIMA Shigehiro, TODA Yoshihiko

    27th International Conference on Magnet Technology  2021.11  Cryogenics and Superconductivity Society in Japan

  • Removal of Iron Oxide Scale from Boiler Feed-water in Thermal Power Plant by Magnetic Separation　-Aggregation States of Oxygenated Treatment Scale- International conference

    Masao Okumura, Yoko Akiyama, Tatsuya Mori, Hidehiko Okada, Noriyuki Hirota, Tsuyoshi Yamaji, Hideki Matsuura, Seitoku Namba, Tomokazu Sekine, Fumihito Mishima, Shigehiro Nishijima

    27th International Conference on Magnet Technology  2021.11  Cryogenics and Superconductivity Society in Japan

  • Development of novel magnetic separation for paramagnetic particles using the selection tube International conference

    F.Mishima, N.Nomura, and S Nishijim

    27th International Conference on Magnet Technology  2021.11  Cryogenics and Superconductivity Society in Japan

  • Separation of Microplastics from Sea Water by Means of Electromagnetic Force International conference

    N. Nomura, F. Mishima and S. Nishijim

    27th International Conference on Magnet Technology  2021.11  Cryogenics and Superconductivity Society in Japan

  • Development of Novel Magnetic Filter for Paramagnetic Particles in High Gradient Magnetic Separation Invited International conference

    Shigehiro Nishijima, Fumihito Mishima and Naoki Nomura

    The 12th International Forum on Magnetic Force Control  2021.10  University of Science and Technology Beijing

  • New evaluation method for interlaminar shear strength of insulating materials in fusion and accelerator magnet International conference

    Masaaki Hirai, Shigehiro Nishijima

    The 12th International Forum on Magnetic Force Control  2021.10  University of Science and Technology Beijing

  • Separation of Micro-plastics from Sea Water Using Lorenz Force International conference

    Naoki Nomura, Fumihito Mishima, and Shigehiro Nishijima

    The 12th International Forum on Magnetic Force Control  2021.10  University of Science and Technology Beijing

  • Magnetic separation device for paramagnetic materials operated in a low magnetic fields International conference

    Fumihito Mishima, Naoki Nomura and Shigehiro Nishijima

    The 12th International Forum on Magnetic Force Control  2021.10  University of Science and Technology Beijing

  • Environmental Conservation with Superconducting Magnet Technology ? Soil Decontamination, Reduction of Carbon Dioxide, Recovery of Micro-plastics ? International conference

    Shigehiro Nishijima

    The 33rd International Symposium on Superconductivity  the National Institute of Advanced Industrial Science and Technology (AIST) and the Victoria University of Wellington (VUW)

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    磁場を利用した環境保全技術についてまとめた。特に、汚染土壌の減容化、二酸化炭素の発生抑制、マイクロプラスチックの回収である。

  • Removal of Iron Oxide Scale from Feed-water in Thermal Power Plant by Magnetic Separation -Separation Conditions of Oxygenated Treatment Scale- International conference

    K.Akiyama, T.Mori, T.Terai, Y.Akiyama, H.Okada, N.Hirota, T.Yamaji, H.Matsuura, S.Namba, T.Sekine, F.Mishima, S.Nishijima

    Applied Superconductivity Conference 2020  Institute of Electrical and Electronics Engineers

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    火力発電所ボイラー給水系で酸素処理をした体系の酸化鉄スケールの除去を超電導磁気分離法で実施した場合の分離の可能性を検討した。

  • Development of Magnetic Separation Device for Thermal Power Plant - Proposal of joint research- International conference

    Shigehiro Nishijima

    The 11th International Forum on Magnetic Force Control  一般社団法人　電気学会

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    火力発電所給水系からの酸化鉄スケールの磁気分離手法について報告した

  • Study of Micro-plastic separation from sea water with electro-magneic force International conference

    Shigehiro Nishijima

    The 11th International Forum on Magnetic Force Control  一般社団法人　電気学会

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    マイクロプラスチックの海洋からの分離技術を開発した。特に実用的観点から養殖用の取水海水からの分離を検討した。

  • Study on the fulid control for magnetic separation of paramagetenic particles International conference

    F.Mishima, N.Nomura, S.Nishijima

    The 11th International Forum on Magnetic Force Control  一般社団法人　電気学会

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    常磁性体粒子の分離を淘汰管と磁場を利用して実施した

  • Fundamental study on magnetic separation in paramagnetic-ferromagnetic coexistin system -Magnetic separation on Iron oxide scale in boiler feedwater system- International conference

    T.Sakano, F.Mishima, N.Nomura, S.Nishijima

    The 11th International Forum on Magnetic Force Control  一般社団法人　電気学会

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    常磁性粒子と強磁性粒子が混在している場合の磁気分離の可能性について議論した

  • 常磁性粒子を対象とした高効率磁気分離法に関する基礎的研究

    坂野琢真，三島史人，西嶋茂宏

    第99回2020年度春季　低温工学・超電導学会  低温工学・超電導学会

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    常磁性体を効率的に磁気分離するための条件に付いて検討した。特にpHの影響や強磁性体粒子の添加さらには磁気フィルターの効果について系統的に調べた。

  • 磁気分離法による火力発電所ボイラー給水中の酸化鉄スケール除去 -化学洗浄ラインへの導入に向けての現場実験-

    秋山 巧士郎，森 達也，秋山 庸子,三島 史人，西嶋 茂宏,岡田 秀彦，廣田 憲之, 山地 豪，松浦 英樹，難波 正徳, 関根 智一

    2019年度　磁気力制御・磁場応用 夏の学校  電気学会　磁気力を活用した新たな環境技術のフィージビリティと超電導の役割」調査専門委員会

  • Examination of advanced magnetic separation method using fluid control

  • Removal of Iron Oxide Scale with Magnetic Separation from Boiler Feed-water in Thermal Power Plant - Aggregation State of OT Scale -

  • Removal of Iron Oxide Scale with Magnetic Separation from Boiler Feed-water in Thermal Power Plant - Large Scale Experiment-

  • Removal of scale from feed-water in thermal power pland by magnetic separation -Composition analysis of oxygenated treatment scale- International conference

    M.Hiramatsu, J.Yamamoto, Y.Akiyama, F.Mishima, S.Nishijima, H.Okada, N.Hirota, T.Yamaji, H.Matsuura, S.Namba, T.Sekine

    The 31st Internal Symposium on Superconductivity  

  • Removal of Iron Scale from Boiler Feed-water in Thermal Power Plant by Magnetic Separation - Large-scale Experiment - International conference

    J.Hashimoto(Yamamoto), T.Mori, Y.Akiyama, H.Okada, N.Hirota, H.Matsuura, S.Namba, T.Sekine, F.Mishima,S.Nishijima

    2018 Applied Superconductivity Conference 

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    超伝導磁石を利用した火力発電所給水系のスケール除去の研究である。スケールの蓄積により発電効率の低下、ひいては二酸化炭素排出の増加が起こる。スケール除去により当該問題の解決を図る研究である。大型モックアップ実験機により、スケールの除去実験を行った結果について報告した。

  • 配管内における腐食生成物の磁気分離法に関する基礎的研究

    島崎優弥，西嶋茂宏，三島史人

    2018年度　磁気力制御・磁場応用 夏の学校 

  • Study on Irradiation Effect of Insulating Materials for Fusion Superconducting Magnet -Change in Electric Insulation Performance by Irradiation- International conference

    S. Kito, Y. Akiyama, S. Nishijima

    27th International Cryogenic Engineering Conference- International Cryogenic Materials Conference 

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    核融合炉用超電導磁石絶縁材料の照射による絶縁性能の劣化に関する研究である。特に、応力が印加された場合、照射によってその絶縁強度がある応力を境に急激に劣化する現象を新たに見つけ報告した。

  • Removal of Iron oxide scale from feedwater in thermal power plant using superconducting magnetic separation International conference

    S.Nishijima

    The 9th International Forum on Magnetic Force Control 

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    超伝導磁石を利用した火力発電所給水系のスケール除去の研究である。スケールの蓄積により発電効率の低下、ひいては二酸化炭素排出の増加が起こる。当該システムによる二酸化炭素の排出量の低減の社会的インパクトや超電導を採用する理由等について、本研究の位置づけについて総合的に議論した。

  • Removal of Iron Scale from Boiler Feed-water in Thermal Power Plant by Magnetic Separation International conference

    ・ H. Okada, N. Hirota, J. Yamamoto, M. Hiramatsu, Y. Akiyama, F. Mishima, S. Nishijima, H. Matsuura, S. Namba, T. Sekine

    Material Analysis and Processing in Magnetic Fields 

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    超伝導磁石を利用した火力発電所給水系のスケール除去の研究である。スケールの蓄積により発電効率の低下、ひいては二酸化炭素排出の増加が起こる。スケール除去により当該問題の解決を図る研究である。フィルターの工夫により大量のスケールを捕獲分離できることを小規模実験で示すとともに大規模実験で実証した。

  • Removal of Iron Oxide Scale from Feedwater in Thermal Power Plant Using Superconducting Magnetic Separation International conference

    S.Nishijima

    The 14th International Workshop of High-Temperature Superconductors in High Frequency Field 

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    超伝導磁石を利用した火力発電所給水系のスケール除去の研究である。スケールの蓄積により発電効率の低下、ひいては二酸化炭素排出の増加が起こる。スケール除去により当該問題の解決を図る研究である。高温・高圧で磁気分離を実施する必要があるため、超電導磁石を利用した磁気分離が最適であることを述べ、システムの必要要件について議論した。

  • 磁気分離法による火力発電所ボイラー給水中の酸化鉄スケール除去 ?フィルター設計?

    岡田秀彦, 山本隼也,森達也,平松まみ,秋山庸子,廣田憲之,西嶋茂宏,三島史人,松浦英樹,難波正徳,関根智一

    2018年度春季低温工学・超電導学会  船堀

  • 磁気分離によるセシウム含有土壌の減容化の研究 -有機物処理の検討-

    西本湧希，堀江裕貴，秋山庸子，西嶋茂宏， 三ツ井誠一郎，梅澤克洋，加藤貢，岡田尚，関山富男

    2017磁気力制御・磁場応用　夏の学校  電気学会

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    福島汚染土壌の減容化を磁気分離で実施するための有機物処理に関する研究

  • Superconducting Magnetic Separation System for Volume Reduction and Recycle of Removed Soil International conference

    Yoko Akiyama, Hiroki Horie ,Yusuke Ito , Shijehiro Nishijima

    The 8th International Forum on Magnetic Force Control in Beijing  電気学会

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    福島汚染土壌の減容化を超電導磁石の強磁場を用いて可能であることを示した

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Awards

  • Academic Prize

    2018.7