2606 産総研での地中貯留研究 : まとめと課題(S31-2 温室効果ガス排出抑制技術(2),21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

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  • 2606 Study of the Geological Storage in AIST-Summery and remained issues

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The global warming is one of the most serious environmental problems of the day and the Japanese Government announced a proposal of "Cool Earth 50" that will reduce half of CO_2 emission by 2050. Energy saving, use of the renewable energy and increase of electricity produced by low CO_2 emission power supply and nuclear power plant are necessary and important. It is, however, impossible to produce all the amount of energy to be used by the renewable and nuclear energies at present. We need a bridge technology to use fossil energy to keep the economic activities and to reduce the emission of CO_2 into the atmosphere. CO_2 capture and storage (CCS) is one of the most feasible methods among the bridge technologies. There are also several options to store CO_2. Geological storage, where CO_2 is stored into subsurface layers, is one of the storage options. In order to store CO_2 into the geological layers there need several technological innovations. AIST started a research project to realize CO_2 geological storage in saline aquifer. The research project contained several technologies to be developed such as technology to predict groundwater movement around depths of CO_2 storage, CO_2 monitoring technology using seismic wave, technology to evaluate the sealing abilities at cap rocks and geochemical technology using the geochemical simulator to predict reactions in the saline aquifer. We will present several results on the geological storage of CO_2 into saline aquifer and discuss further studies to commercialize the CO_2 geological storage.

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