tailieunhanh - Sustainable Manufacturing and Eco-Innovation Framework, Practices and Measurement
In 2002, Shapouri et al. surveyed energy values and reported that fuel ethanol from corn produced about 34 percent more energy than it took to produce it. That figure was based on a weighted average of a 37-percent increase in energy from ethanol produced in dry mills and a 30-percent increase from wet mills. This value was revised in 2004 by updating energy estimates for corn production and yield, improving estimates of energy required to produce nitrogen fertilizer and energy estimates for seed corn, and using better methodologies for allocating energy for producing coprod- ucts. With these revisions, the energy gain is 57 percent for wet milling and 77. | Sustainable Manufacturing and Eco-Innovation Framework Practices and Measurement Synthesis Report eco-innovation SUSTAINABLE MANUFACTURING AND ECO-INNOVATION Framework Practices and Measurement Synthesis Report .
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