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biodiesel from defective coffee beans

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  • biodiesel from defective coffee beans


    Neil "Cruiserman" mentioned home brew biodiesel from secondhand chip oil in another thread, I just came across this page.

    The CoffeeSnob van should run on bad commercial coffee and thus protect and improve our planet from multiple angles.

    ;D

    [hr]

    On the feasibility of producing biodiesel from defective coffee beans
    Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

    Citation: Paper number 056140, 2005 ASAE Annual Meeting . @2005
    Authors: Rodrigo Ribeiro da Silva Camargos, Adriana Silva França, Leandro Soares de Oliveira, Vany Perpétua Ferraz
    Keywords: biodiesel, defective coffee beans

    This study aimed at a preliminary evaluation of the feasibility of producing biodiesel using oil extracted from healthy and defective coffee beans. Direct transesterification of triglycerides from refined soybean oil and from oils extracted from healthy and defective (PVA) coffee beans was performed. There was good phase separation after reactions using oils from both soybean and healthy coffee beans. This was not observed when using PVA oil, probably due to saponification of free fatty acids during reaction. The highest conversion value (~90%) was attained for transesterification of oil from healthy coffee beans at 55oC during 1 hour. An increase in reaction temperature resulted in an increase in biodiesel conversion. Lower conversion values were obtained when using PVA oil, as a consequence of the presence of saponified free fatty acids, which hindered an effective contact among reagents.



  • #2
    Re: biodiesel from defective coffee beans

    Interesting. I wonder if the pulp could be fermented to produce ethanol, or perhaps used for biogas. I seem to remember that daterra burns some of it off to power their drying equipment.

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    • #3
      Re: biodiesel from defective coffee beans

      Now thats a much better use of nasty Robusta beans (not the good stuff we get here at CS ).... The faint whiff of burning coffee oils has to be better than some of the other alternatives :P,

      Mal.

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      • #4
        Re: biodiesel from defective coffee beans

        Of course, getting arrested for hooning in your biodiesel vehicle, after cops smelt the burning tyre aroma from your exhaust.

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