Reducing GHG emissions by producing bioplastics alongside ethanol
Aside from metals such as iron, steel and aluminum, perhaps the most common material in cars is plastic. Most of the plastic made today is derived from petroleum. Besides the raw materials used, a lot pf greenhouse gases are produced in the processing of plastics. Bio-materials have been a major research area in recent years including Ford's new soy-foam seats. Researchers from the Hawaii Natural Energy Institute have a developed a class of bioplastics called Polyhydroxyalkanoates that can be produced as a byproduct of cellulosic ethanol production. According to the research, PHA can be produced with only 0.49 kg CO2/kg of resin. Typical plastics production emits 2-3 kg of CO2/kg of resin. The energy required in the process is also reduced from 78-88 MJ to only 44 MJ per kg of resin. With the coming of cellulosic ethanol production in the next few years, this could be a potentially huge boon to making the businesses more viable.
[Source: Hawaii Natural Energy Institute, via Green Car Congress]
Reader Comments (Page 1 of 1)
Sean 3:03PM (8/19/2008)
I'm all for the production energy reduction, but what's to stop biomaterials from degrading long before their petro counterparts?
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Andy 5:49AM (8/20/2008)
This just goes to show why GHG's need simply to be taxed. It's far too complicated for companies to make decisions on life cycle impacts if they attempt to include the effects of all previous handlers. Similarly, consumers can't evaluate overall impact of their purchases. We don't have access to adequate information.
The only way society can realistically manage this complex accumulation of eco impact is to add cost at every stage accordinglyl (such as for carbon output using tax or cap/trade). The total impact will then be shown to the consumer in the price and make for an easy metric of comparison.
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