Vol.9 No.3 2017

Research paper : Radioactive cesium decontamination technology for ash (T. Kawamoto et al.)−153−Synthesiology - English edition Vol.9 No.3 (2017) Durga ParajuliObtained the Masters of Science and Technology in Physical Chemistry at the Tribhuvan University (Nepal) in 2002. Completed the doctor’s course at the Saga University in 2006. Doctor (Engineering). Postdoctoral Researcher, Graduate School of Science and Engineering, Saga University in 2006. Postdoctoral Researcher, Quantum Beam Science Center, Japan Atomic Energy Agency from 2008 to 2011. Researcher, Nanosystem Research Institute, AIST in 2011; Researcher, Green Technology Research Group, Nanosystem Research Institute in 2014; and Researcher, Nanoparticle Functional Design Group, Nanomaterials Research Institute in 2015. In this paper, was in charge of the development of cesium elution method from incinerated ash and the development of adsorbents.Kimitaka MinamiCompleted the doctor’s program at the Department of Chemical Engineering, Graduate School of Engineering, Tohoku University in 2005. Research Center for Compact Chemical Process, AIST in 2005; Institute of Multidisciplinary Research for Advanced Materials, Tohoku University in 2006; Advanced Institute for Materials Research, Tohoku University in Nov 2007; and Assistant, New Industry Creation Hatchery Center, Tohoku University in 2010. Engaged in researches on supercritical fluid and nanoparticle synthesis. Joined the Nanosystem Research Institute, AIST in March 2012; and Senior Researcher from Oct 2013. In this paper, was in charge of the design of the pilot plant.Tetsuo YasutakaGraduated from the Department of Agricultural and Environmental Engineering, Faculty of Agriculture, Kyoto University in 2000. Completed the master’s program at the Graduate School of Agriculture, Kyoto University in 2002. Joined the Kokusai Kogyo Co., Ltd. in 2002. Completed the doctor’s program at the Graduate School of Environment and Information Sciences, Yokohama National University in 2007. Researcher, Research Institute for Geo-Resources and Environment in 2011; and Senior Researcher in 2013. In this paper, was in charge of the development of monitoring technology and on-site application.Tatsuya UchidaGraduated from the Department of Fermentation Technology, Faculty of Engineering, Yamanashi University in 1970. Joined Hitachi Chemical Co., Ltd. in 1970. Worked on the environmental restoration integrated with the production facilities, R&D for Waste Material Recycling Division, and helped export overseas plants. Manager of Design, Household Equipment Division in 1995; Managing Plant Director; and Director, CSR Department and Quality Assurance General Manager, Environmental Safety Discussion with Reviewers1 OverallComment (Toshimi Shimizu, AIST)This paper discusses the decontamination technology for incinerated ashes by using the Prussian blue nanoparticles, in response to the urgent demand against the radioactive material leakage accident at the Fukushima Daiichi Nuclear Power Plant of the Tokyo Electric Power Company. It presents typical nanotechnology in which wide-ranging scales are linked seamlessly from nanoparticles, adsorbents, adsorption systems, to plant construction. Of particular interest is the description of the related technologies that were built under specic environments and conditions, from overviewing the total issue, creating the original research strategy, to collaborating and making adjustments with various stakeholders including the researchers of different elds, Japanese government, local governments, and local residents. I think this paper is suitable for publication in Synthesiology.Comment (Naoto Kobayashi, Waseda University)This paper describes the results of R&D that has provided solutions in an extremely short period of time using PB nanoparticles, for the urgent issue of decontaminating the leaked radioactive materials from the Fukushima Daiichi Nuclear Power Plant of the Tokyo Electric Power Company due to the Great East Japan Earthquake. It is a significantly useful paper that presents the attainment of the final goal of verification and practical use through collaboration with companies. I believe it is suitable for publication in Synthesiology. On the other hand, there seems to be a lack of scientic explanation on the effectiveness of decontamination by PB nanoparticles, which is the essential technology, and additional explanation is recommended.2 Figure to present the R&D organizationComment (Toshimi Shimizu)The explanations of elemental technologies and the integration scenario for synthesiological discussion are presented in Figs. 2 and 4, Table 2, and others. On the other hand, in this research, the stakeholders are the central government, local governments of prefectures, cities, towns, or villages, and local residents, as well as technology users and product manufacturers. It can be positioned as a specic R&D in which the urgent problems had to be solved in a situation where related laws were still lacking. The research was conducted in the restriction of compliance and involved diverse and complex collaboration and interrelationships, but I feel such complexity and difficulty are not sufficiently expressed in the present gures.For example, I remember that the industry-academia-government collaboration framework was formerly categorized into three forms in AIST, one-to-one collaboration such as regular joint research or subcontracted research, one-to-many such as research consortiums and platforms, and many-to-many such as research associations and research bases. I think the general readers will find it interesting to know how the one-to-one or one-to-many collaboration framework that started from the development of adsorbents and PB nanoparticle mass production through corporate joint research had shifted to some other Department, Cooperate Business Strategy Headquarters in 2004. Member, Recycling Committee, Japan Nuclear Fuel Ltd. from 2005. Established the Uchida Professional Engineer Ofce in 2008. Technical Support Advisor, AIST in 2011; and Visiting Researcher from 2015. In this paper, was in charge of the design of the pilot plant.

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