对化石燃料二氧化碳在海洋中排放的直接实验
1Monterey Bay Aquarium Research Institute, Post Office Box 628, Moss Landing, CA 95039, USA. School of Earth Sciences, Stanford University, Stanford, CA 94305, USA.
Science (New York, N.Y.)
|May 13, 1999
概括
实验测试了二氧化碳 (CO2) 作为固体水合物的海洋处置. 在浅水深处,水合物分解,而深海水合物形成导致溢出,这表明二氧化碳捕获具有挑战性.
科学领域:
- 海洋学 海洋学 海洋学
- 地质化学 地质化学
- 环境科学 环境科学
背景情况:
- 化石燃料的二氧化碳 (CO2) 排放对环境构成风险.
- 海洋封存是处理二氧化碳的潜在策略.
- 二氧化碳可以在特定的压力和温度条件下形成固体水合物.
研究的目的:
- 评估将化石燃料二氧化碳 (CO2) 作为固体水合物在深海中处置的可行性.
- 观察CO2水合物的行为和稳定性在各种海洋深度和温度.
主要方法:
- 实地实验是在深度从349米到3627米之间进行的.
- 在实验期间,温度从8到1.6摄氏度不等.
- 观察重点是水合物形成,分解和与海水和沉积物的相互作用.
主要成果:
- 在349米处,二氧化碳水合物瞬间形成,但在海水中迅速分解.
- 在3627米高处,大量的水合物形成导致了液态二氧化碳的溢出.
- 液态CO2和沉积物之间形成了屏障,但观察到水合物溶解.
结论:
- 作为固体水合物,二氧化碳的海洋处置带来了重大挑战.
- 水合物稳定性取决于深度和温度.
- 需要进一步的研究来克服诸如快速分解和溢出等问题,以便有效地封存海洋.
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