Monday, April 21, 2008

Food vs. Fuel


License this soybean pod photo at Alamy.


The global food supply crisis is causing many countries to rethink the biofuel mandates. Crop production for bio-fuel means reductions in grain and soy growing, which (along with market speculation) leads to an increase in prices.
New attention is being given to affordable grains versus the need for renewable energy from biofuels.

Labels: , , , , , , , , , , , , , , , , , ,


© 2008, Goss Images LLC, All rights reserved.

Tuesday, March 4, 2008

Biofuel


License this oil well pump jack photo at PhotoShelter.

We have hit a few bumps during the race for alternatives to fossil fuels. First generation biofuels have limitations including threatening food supplies and biodiversity.





License this soybean photo at PhotoShelter.

Lifecycle analysis of the production of ethanol from corn and biodiesel from soy shows only modest net energy gains when you subtract the energy costs of fuel production, pesticide use, transportation, and by-products that remain.


Second generation biofuels are being developed to attempt a transition to producing more sustainable feedstocks. Cellulosic ethanol made from grasses like switchgrass, prairie grasses, or Sugarcane bagasse waste is emerging as the favorite to overcome the environmental and economic challenges.

Labels: , , , , , , , , , , , , , , , , ,


© 2008, Goss Images LLC, All rights reserved.