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  • Joe

    Biofuels are a joke and a scam. Does anyone realize that if you trap the CO2 in algae, but then process it some other processing plant (which requires energy) and use it to fuel trucks (which requires energy to get it to the trucks) and then you burn it, the CO2 goes into the air anyway, and you used MORE overall fuel by fueling the production process of the biofuel. And where did the energy to store it in algae come from? THE SUN. So it is the most inefficient solar panel in the world, essentially.

    If you wanted it to be good for the environment you’d throw the algae into the sea or something, not burn it for fuel. All biofuel in my opinion as a physicist is a scam. Companies can pretend to be green while polluting just as much. And don’t get me started on the corn biofuels, and other grain biofuels. Again it’s just solar energy, which grows a plant, and then the plant is processed, shipped, and burned while the grain prices sky rocket and people starve somewhere in the world because of it.

    • Mike

      Joe, I suggest you check this part of the story out before commenting on the pitfalls of previous biofuels projects (although I agree that many have been bogus ideas):

      “The algae will be grown at a facility adjacent to the stacks, harvested, dried using industrial waste heat, from the cement plant and then used along with the fossil fuels that are currently used in its cement kilns”

      The algae processing is using waste heat, which would be lost energy regardless. Also, no need for trucks/shipping as the fuel is then being consumed on site. Essentially this delays the use of fossil fuels, decreasing the rate of carbon dioxide emmisions. For every BTU of fuel generated from recaptured C02 there is one less BTU of fuel mined, so the overall carbon footprint goes down.

  • Mstardom

    This is a great way to use natural aspects of our environment to produce bio fuel. Will this algae-produced fuel be cheaper than gasoline? We will have to see if this technology brings cheaper fuel. If it doesn’t, then it falls into the same category of other fuel technologies that are very expensive.

  • eva

    I think the title of this article is misleading…. what is happening is they are capturing the CO2 from the cement plant and using that to grow the algae. photosynthetic algea are like plants, they require high amounts of CO2 and release O2. Certain types of algae produce oils as a waste product and that is what is valuble to us as a bio fuel.

  • David

    Deleted my post? It’s a plain fact that most CO2 emissions from concrete production are caused by the chemical process, NOT the energy intensity. The first two sentences made me want to throw up all over my computer. That’s the truth! Don’t censor the truth!

    • E&I

      We appreciate your insight but your comment was not deleted to “censor the truth”, it was deleted for the insults it was peppered with.

      Taking note of your original concern, we updated the post yesterday to reflect a more nuanced picture of how much CO2 is released via the chemical processes of cement making and how much is released by burning fuel for the kilns. We based our rough estimates on a a 2004 EPA study.

      See: Hanle, J. (2004) “CO2 Emissions Profile of the U.S. Cement Industry”(pdf)



      • David

        Now the question is, which CO2 emissions are being captured by the company? 60%, 40%, or all?

  • asam aziz

    Cement Plants emit Co2 at high temperature from stacks at a high level of about 100 meters. How do you bring it down to the algae growing area at griound level. Are you blowing it down by mechanical means at the Canadian Plant.

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  • Jeremyliu70

    It’s good….but only 1% of the CO2 emission. Even technically it can extended to a full scale, how about investment on the rate of  $4million for 1%

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