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Another group of
energy pioneers is applying lessons from nature’s carbon cycle.
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They propose to
feed a mixture of coal, lime and water into a chemical reactor to produce
hydrogen and carbon dioxide. This process flow chart shows the hydrogen being
used in a fuel cell to produce electricity.
In an additional step, the carbon dioxide could be combined with
minerals to capture the carbon dioxide in a form of rock. This process is
expected to be quite efficient – on the order of 70% of the energy in the
coal. Time will tell if this is true.
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Again,
development work is underway supported by governments and industry. Albertans
and Canadians are involved with the international Zero Emission Coal Alliance
which has been formed to develop this energy production and greenhouse gas
management opportunity.
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