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Biofuels

Biofuel development is high on our priority list here at IGES.  Providing liquid fuel for the transportation industry is of utmost importance.  Moving people and goods around the planet is critical in our global economy.  No amount of electricity generated by renewable means will solve this critical issue.

All solutions must be economically viable to succeed.  $20.00 a gallon diesel fuel is a non starter no matter how green it is.  This is why we like combining multiple technologies to solve the problem.  Consider the combination of gasification for waste disposal, Algae for Co2 capture and a modified Fischer-Tropsh process to convert the syn-gas to liquid fuel.  The problem begins with what to do with municipal solid waste and sludge. The solution is gasification the product is electricity and / or liquid fuel. All this while the process being a carbon sink.

Algae

Algae: The King of the Feedstocks

Of all the feedstocks Algae stands head and shoulders above the competition as a lipid production medium. Its rapid growth rate, ability to become part of a process through the use of bio reactors and huge appetite for Co2 make it ideal for our purposes.   

Even as prolific as Algae is, grown on its own simply as a feedstock for the production of biodiesel is not economically viable.  After all the inputs of the process are measured the cost of the resultant fuel is simply to high to be profitable.

At IGES we take a different approach.  Algae is used as a Co2 capture device at gasification plants.  The Co2 captured from the gasification process along with nutrients is fed to algae at optimum levels.  A fraction of algae is strained out daily, dried to 20% moisture using the waste heat from the gasifier and simply fed back into the gasification process.  The high lipid content 50% or more makes Algae a valuable buffer to MSW or other low calorific value feedstocks.  Allowing us to maintain optimum efficiency. 


Ethanol - Butenol

Ethanol  is the most widely produced of the bio fuels however, we here at IGES are not as enamored with it as many people are.  First a large percentage of the ethanol produced is done so using corn or other food feedstocks. In our opinion this is just wrong, food should never be used to create fuel for anything but humans. Ethanol's woes do not end there.  It does not get along well with existing fuel systems and can not be blended with gasoline in ratios above 10%.

We believe Butenol to be the Biofuel of the future here's why:

  •   Butanol has a higher fuel value than ethanol, offering about 85% of the fuel value of gasoline on a gallon-for-gallon basis compared to only about 60% for ethanol. 
  •   Butanol can be blended with gasoline in higher amounts. While ethanol is currently limited to 10% by volume mixed with gasoline, butanol can be blended up to 16% under current US regulations. Higher blends are likely possible without requiring any modifications to engines running on butanol blends.
  •   Butanol can be transported via existing fuel infrastructure and blended directly at existing refineries.
  •   Butanol can be produced using the same fermentation plants and same sugar and cellulosic feedstocks as ethanol. It can also be produced from cellulosic feedstocks in the same way that ethanol can.
Biobutanol also has a higher theoretical yield from glucose or glucose equivalents compared to an advanced biofuel alternative such as a terpene.