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Do we need to revisit the ideas of the past in order to solve today's energy problems? At a recent meeting of the Capital Region Energy Forum (CREF), I was reminded of that very possibility. Held at the Edison Exploratorium in Schenectady, New York, the July 14 meeting allowed participants to examine a restored Detroit Edison electric car (circa 1912) that had been recovered from a farmer's field in nearby Glenville. Also on display were electric irons, light bulbs, and other personally-recognizable consumer products made by General Electric over the years.
But is the past prologue? Let's consider some more recent events.
Cellulosic Ethanol
What's the big deal about cellulosic ethanol? I've been hearing this biology/chemistry phrase repeated in the media more and more, but many reports don't provide much detail. Fortunately, the CREF meeting helped me understand the importance of cellulosic ethanol, which is the ethanol derived from the non-edible part of a plant. Consequently, if a farmer were to process only the left-over parts of a corn or sugarcane plant, or to plant switchgrass instead, fuel production wouldn't conflict with the food supply.
Brazil's Experience
Dr. Tony Murray, a senior scientist at General Electric's Global Research Center in Niskayuna, New York, was the featured speaker at the July 14 CREF meeting. Much of Dr. Murray's presentation focused on Brazil's efforts, and possible lessons-learned for other countries that are pursuing sustainable biofuels. Admittedly, I was caught off-guard when, during the past few years, I discovered this South American country had pioneered the use of domestically-grown sugarcane to wean itself from external fossil-fuel supplies.
While attempting to solve its energy problems, Brazil has been careful not to add to the global warming problem by choosing to stay away from its northern rainforests for most of its energy-producing sugarcane planting. Sugarcane is grown in its southern regions, and bagasse, the plant material left over after the sugarcane stalks are crushed to extract juice, is then used to produce fuel.
Much of Dr. Murray's presentation focused on an engineering life cycle analysis (LCA), to produce an objective ratio of how much energy can be extracted from a specific bio-fuel process, relative to fossil fuel. For farmers in Minnesota and throughout the Mid-West, I'm sure it's no news - and has been factored into their future plans - that bagasse derived from sugarcane out-performs energy derived from corn many times over.
Editor's Note: Click here for Part 1 of this multi-part series.
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