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Issue 8, 2015
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The feasibility of in situ geological sequestration of supercritical carbon dioxide coupled to underground coal gasification

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Abstract

Based on the thermophysical properties of supercritical carbon dioxide and available power plant engineering information, it is shown that the maximum achievable efficiency of carbon dioxide sequestration in underground cavities left after in situ coal gasification is approximately only 14%. Available evidence indicates that the claim that the syngas thus produced can be employed to synthesise “green” liquid fuels is over-optimistic. In addition, a brief analysis is presented of environmental issues relating to the potential contamination by carcinogenic polycyclic aromatic compounds dissolved by supercritical carbon dioxide. An estimate of the solubility of the carcinogenic compound benzo[a]pyrene based on molecular polarizability is presented.

Graphical abstract: The feasibility of in situ geological sequestration of supercritical carbon dioxide coupled to underground coal gasification

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Publication details

The article was received on 07 Apr 2015, accepted on 18 Jun 2015 and first published on 18 Jun 2015


Article type: Analysis
DOI: 10.1039/C5EE01094B
Citation: Energy Environ. Sci., 2015,8, 2330-2340
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    The feasibility of in situ geological sequestration of supercritical carbon dioxide coupled to underground coal gasification

    D. J. Schiffrin, Energy Environ. Sci., 2015, 8, 2330
    DOI: 10.1039/C5EE01094B

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