|Updated: 2/1/2006; 8:29:39 AM.
Renewables, fuel cells, hydrogen, and efficiency
Saturday, January 28, 2006
Ethanol, oil and GHG:
Good summary of the issues, based on a UC Berkeley paper
. Bottom lines: All forms of US-produced ethanol displace a lot of oil (typically 95% less petroleum used). Greenhouse gases (GHG) are cut slightly (13%), due to the use of natural gas and even coal to heat the production of the ethanol from corn. How the corn is grown makes a big difference (e.g., low tillage). Future cellosic ethanol is projected to cut GHG dramatically (80%). No data is provided for Brazilian cane production, which uses corn stalk bagasse for heat instead of natural gas or coal, which I have read elsewhere results in high GHG displacement. 12:25:15 AM
Copyright 2006 © Ken Novak.
Last update: 2/1/2006; 8:29:39 AM.