Capturing CO2 from cement works with algae

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. 

, , , , , , ,

2 Responses to Capturing CO2 from cement works with algae

  1. David B. Benson 21 October, 2008 at 11:50 pm #

    Cement production contributes about 4% of the annual CO2 emissions.

    I hope this will scale up easily!

  2. PRADEEP 22 October, 2008 at 7:04 am #

    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).

Leave a Reply