Research and Development of C02 Ocean Sequestration Technology by Moving Ship Method.

DOI Web Site 22 References
  • Magi Michimasa
    CO2 Storage Research Group, Research InstituteofInnovativetechnologyfor the Earth
  • Murai Shigeo
    CO2 Storage Research Group, Research InstituteofInnovativetechnologyfor the Earth
  • Hirai Syuichiro
    Research Center for Carbon Recycling and Energy, Tokyo Institute of Technology
  • Sato Toru
    Dept. of Ocean Technology, Policy, and Environment, GraduateSchool ofFrontierSciences, University of Tokyo, Dept. of Ocean Technology, Policy, and Environment, Rm.474, Environmental Bldg.
  • Ishimatsu Atushi
    Institute for East China Sea Research, Nagasaki University
  • Ozaki Masahiko
    Japan Agency for Marine-EarthScience and Technology, Centerfor Deep Earth Exploration, Engineering Department

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Other Title
  • Moving Ship方式によるCO2隔離技術の開発
  • Moving Ship ホウシキ ニ ヨル CO2 カクリ ギジュツ ノ カイハツ

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Abstract

It is necessary to develop technologies to reduce anthropogenic C02 emission into the atmosphere to control global warming. The ocean sequestration technology is one of the promising measures, considering a large potential capacity of CO2 sequestration of the ocean. The RITE has advanced the project of ” Study of Environmental Assessment for CO2 Ocean Sequestration for Mitigation of Climate Change” for the ocean sequestration technology using the Moving Ship method by the subsidy of the Ministry of Economy, Trade and Industry. In the ocean sequestration project, the technology assessment of the CO2 ocean sequestration ability, the development of the environmental assessment technology, and the development of the CO2 dilution technology have been conducted as an individual element technology. As a result, a lot of outcomes have been steadily accumulated, such as the CO2 sequestration capacity of the ocean and economical benefit and risk by the ocean sequestration, development of a CO2 acute influence model for marine organisms, development of a basic model for deep sea ecosystem, and development of CO2 dilution and diffusion models, and grasp of design condition of CO2 discharge nozzle. In this report, the results of the first half of the project's Phase 2 were chiefly explained. First, the concept of ”CO2 sequestration technology by the Moving Ship method” was described. Next, the some results of element technologies were explained, such as dissolution process of liquid CO2. diffusion of dissolved CO2 in ocean, and influence on marine organisms by dissolved CO2. Finally, the result of ”Case study of 50 million-ton/year ocean sequestration in a selected site” was introduced based on the knowledge and findings obtained in this research project continuing for more than ten years.

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