CO2 injection to granite and sandstone in experimental rock/hot water systems

Lihui Liu, Yuko Suto, Greg Bignall, Nakamichi Yamasaki, Toshiyuki Hashida

研究成果: Article査読

70 被引用数 (Scopus)

抄録

Experiments were conducted using a batch type micro-autoclave over a temperature range of 100-350 °C to understand granite and sandstone reactions in hot water in the absence or presence of excess CO2. Our experiments, for one-week duration, show that the dissolution of granite and sandstone, and the deposition of secondary minerals, is enhanced by the presence of excess CO2. Major element concentrations of the residual solution from the batch autoclave experiments were higher for the rock (granite or sandstone)/H2O/CO2 system, than in the rock (granite or sandstone)/H2O system, but the sample weight loss was lower in the rock/H2O/CO2 system than in the rock/H2O system. Changes in sample weight and CO2-gas volume content concur with the deposition of aluminium silicate and calcium-aluminosilicate secondary minerals, which indicate fixation of CO2 in the rock. Our results suggest that it may be possible for granite and/or sandstone to 'capture' CO2, at hydrothermal conditions, and that underground disposal may be a feasible solution to reducing atmospheric emission of CO2.

本文言語English
ページ(範囲)1399-1410
ページ数12
ジャーナルEnergy Conversion and Management
44
9
DOI
出版ステータスPublished - 2003 6

ASJC Scopus subject areas

  • 再生可能エネルギー、持続可能性、環境
  • 原子力エネルギーおよび原子力工学
  • 燃料技術
  • エネルギー工学および電力技術

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