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Pressure cooking algae for more biofuel 6

Parks talked about it and here is a new url for the same old news but with different views.

"We make an algae soup," says Phillip Savage, professor of chemical engineering at the University of Michigan. "We heat it to about 300 degrees and keep the water at high enough pressure to keep it liquid as opposed to steam. We cook it for 30 minutes to an hour and we get a crude bio-oil."

Processing algae in this way promises crucial advantages over the current process, where strains of algae selected for maximum oil content have to be dried before the oil can be extracted. Pressure-cooking the algae makes it possible to use other, less-oily strains of algae and removes the energy- and time-intensive drying step.

Fri April 30 2010 03:51:54 AM by Manohar Pressure cooking algae  |  oil yield 1514 views

Comments - 6

  • Fri April 30 2010 05:11:18 AM

    The only way to go is the most cost effective route. This seems very good but how much would this cost per litre.

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  • Anto wrote:
    Sat May 01 2010 02:12:42 AM

    Interesting work; I agree with Algalsolution comment, however changing algae used probably you can change part of the pressure cooking process making it easier and less expencive. An other way to go to oilgae usage

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  • Narsi wrote:
    Sat May 01 2010 08:32:46 AM

    Yeah OK, sounds good, but the cultivation part of it, which is by the way the most costly, still remains...drying and harvesting contributes to about 25% of the total costs, oil extraction and transesterification about 15%, cultivation to about 60%. So this method still leaves out the biggest chunk of the cost untouched...

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  • Karthic wrote:
    Mon May 03 2010 06:20:44 PM

    I agree with Mr. Narsi.
    Heating at 300 C for 30 min and high pressures will require enormous energy put into the process. This would work great, but, in order to see the efficacy of this treatment, life cycle analysis has to be done on the overall process and must be compared the common process.


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  • Tue May 04 2010 12:28:11 AM

    use woodchips to heat the water.Woodchips are cheap.

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  • Manohar wrote:
    Thu May 06 2010 03:37:48 AM

    I saw karthic's point of energy expended.
    I hope someone will answer it.

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