bioengineering/biofuels:

A full-scale 50 MGY (50 million gal/year) dry-grind corn ethanol plant produces 2.8-gal ethanol/bushel of corn (1 bushel=56 lb). Calculate ethanol production efficiency of this ethanol plant based on the theoretical ethanol yield (glucose to ethanol ratio 0.51). Assume that the moisture content of corn is 13% (wb) and the corn starch content is 73% (db). Also calculate the amount of DDGS produced annually, if 17 lb (based on 90% dry wt) of DDGS is co-generated with every 2.8 gal of ethanol produced (Note: ethanol density is 0.789 kg/L; 1 gal=3.785 L)

A full-scale 50 MGY (50 million gal/year) dry-grind corn ethanol plant produces 2.8-gal ethanol/bushel of corn (1 bushel=56 lb). Calculate ethanol production efficiency of this ethanol plant based on the theoretical ethanol yield (Theoretically, 1g of glucose will produce 0.514g of ethanol)). Assume that the moisture content of corn is 13% (wb) and the corn starch content is 73% (db). Also calculate the amount of DDGS produced annually, if 17 lb (based on 90% dry wt) of DDGS is co-generated with every 2.8 gal of ethanol produced (Note: ethanol density is 0.789 kg/L; 1 gal=3.785 L)