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Environmental Technology Research Network
in the Asia-Pacific Region

DB for Research Project
Category(1) : Ocean
Category(2) : Impact assessment


  1. Project Name
  2. Duration
  3. Research Catagory 1
  4. Research Catagory 2
  5. Research Field
  6. Researchers
  7. Affiliation 1
  8. Affiliation 2
  9. Address
  10. Country
  11. Phone
  12. Fax
  13. Project Summary
  14. Publications
  15. International Joint Study with

Hokkaido National Industrial Research Institute(HNIRI), Japan

  1. Research on Deep Sea Sequestering of Carbon Dioxide
  2. 1991-1998
  3. global change, ocean, carbon dioxide. air
  4. reaction mechanism, impact assessment
  5. physics, physical chemistry
  6. Jun'ichi KAWABATA, Sogo SAYAMA, Takeshi OKUTANI, Saburo ITO,Hideo NARITA, Tsutomu UCHIDA
  7. Materials Division,Director of Research Planning, Bioscience and Chemistry Division, Resource Chemistry Section, Resources and Energy Division
  8. HNIRI, AIST, MITI
  9. 2-17 Tsukisamu-higashi, Toyohira-ku, Sapporo, Hokkaido 062
  10. Japan
  11. 81-11-857-8940
  12. 81-11-857-8981
  13. This study aims to develop a new method for the sequestering of CO2 in deep sea as CO2 hydrate. Under the temperature and pressure conditions of deep sea, the mixture of CO2 and water forms the crystalline molecular complex, called CO2 hydrate clathrate. CO2 molecules is enclosed within the lattice formed by water molecules, which are strongly hydrogen bonded with each other. As the density of CO2 hydrate is higher than that of sea water, CO2 hydrate would be sequestered in deep sea. To investigate the feasibility of deep sea CO2 sequestering, it is necessary to study the physical properties of CO2 hydrate. The object of this study are to investigate the formation and dissociation processes of CO2 hydrate and its physical properties.
  14. 1)Tsutomu Uchida et al., Raman spectroscopic analysis of growth process of CO2 hydrates (in Japanese), CO2 taisaku-gijutsu to kiso-kenkyu, Kagaku Kogaku symposium series 38, 125-130, 1993
    2)Tsutomu Uchida et al., Physical data of CO2 hydrate, Direct Ocean Disposal of Carbon Dioxide (ed. by N. Handa), Terrapub. Tokyo (in press)
  15. none

Chugoku National Industrial Research Institute(CNIRI), Japan

  1. Environmental Mitigation and Renovation of the Seto Inland Sea
  2. 1995-1999
  3. ocean
  4. impact assessment, modeling, counter measures
  5. engineering
  6. Moriyasu TAKARADA, Michihiro TANABE, Ichiro YUASA, Eisuke HASHIMOTO, Munehiro YAMASAKI, Satoru TAKAHASHI
  7. Environmental Hydraulics Section, Marine Environmental Science and Technology Division
  8. CNIRI,AIST,MITI
  9. 2-2-2 Hiro-Suehiro,Kure,Hiroshima 737-01
  10. Japan
  11. 81-823-72-1921
  12. 81-823-73-3284
  13. This study is planned as a five year project started from FY 1995 to elucidate the more appropriate arrangement of lands to be reclaimed in the bay together with the appropriate redistribution or reduction of existing effluent discharges into the bay by carrying out simulation experiments with hydraulic and numerical models as assessment tools. This study also aims to establish effective measures or technologies for the bay to compensate the unfavorable development impacts and to restore or enhance the environmental capacity of the bay itself based on the field survey for substance transport and assimilation processes in the bay and on the simulation experiments with hydraulic and numerical models for tidal flow control measures such as structure construction or topography modification on the bay bottom. The rational application of ecosystem model is the other task of this study to evaluate the ecological effects of these measures and to round off this study at its final stage.
  14. 1)Ichiro YUASA et al., Necessity of monitoring of marine ecosystem changes, Proc. of Internat. Conf. on Tech. for Marine Environmental Preservation(MARIENV'95),596-602,1995 9
    2)Moriyasu Takarada et al., Measures for Marine Environmental Conservation and Enhancement, Proc. of MARIENV'95,458-462,1995 9 3)Hideki UESHIMA et al., Tidal Flow Control as a Means of Marine Environmental Conseration and Enhancement, Marine Technology Society Journal,Vol.29,No.3,67-73,1995 Fall