There's a large algae reactor underway in Spain based around the Holcem cement reactor, which will be around 100 square metres and cost $92m, according to Greentech media. The reactor is being built by Green Fuels Technology Corp.
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Capturing CO2 from cement works with algae
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Comments (2)
Cement production contributes about 4% of the annual CO2 emissions.
I hope this will scale up easily!
Posted by David B. Benson | October 21, 2008 11:50 PM
Posted on October 21, 2008 23:50
Simon,
Here is my take on this. The single most important variable that influences profitability appears to be the productivity/unit area, rather than oil costs or costs of CO2 offsets. The calculations were too long to post as a comment.
"This is a simplified process economic analysis of an algal biofuel technology that converts CO2 from cement plants into potentially useful algal oil. I examine various factors such as CO2 offset price, price of algal oil, and productivity that affect the profitability of such a process, I conclude that the single most important factor that affects the economics is the productivity of algal biomass (mass produced/unit area). Doubling the productivity (and the CO2 offset) per hectare decreases the payback time by 50 % (15 years to 7 years)."
Posted by PRADEEP | October 22, 2008 7:04 AM
Posted on October 22, 2008 07:04