Bio-diesel, Chemistry

Assignment Help:

In 2008, Safeway has converted all its trucks to bio-diesel B20 which is a mixture of 20% of bio-diesel produced from soybean and 80% of diesel in volume. It claimed that 34,000 tons of CO2 emissions were saved per year.

778_Bio-Diesel.png

EPA recently characterized the CO2 emission reduction for biofuel . B100 Biodiesel from soybean represents a reduction of 57% of CO2 emissions compared to traditional Diesel (from 100 kg CO2/mmBtu for diesel to 43 kg CO2/mmBtu).

The energy contained in bio-diesel is 126kBtu/Gal, and in diesel 139kBtu/Gal.

a. What are the emissions in kg CO2/Gal of Diesel and Bio-diesel (in kg CO2/Gal)?

CO2/Gal of Diesel = 100.0.139 = 13.9 kg CO2/Gal of Diesel

CO2/Gal of Bio-diesel = 43.0.126 = 5.4 kg CO2/Gal of Bio-diesel

b. What are the emissions of B20 (in kg CO2/Gal)?

Each gallon of B20 contains 0.8 gallon of Diesel and 0.2 gallon of Bio-diesel therefore the emissions of B20 are CO2/Gal of B20 = 0.8.13.9 + 0.2.5.4 = 12.2 kg CO2/Gal of B20

c. What is the energy contained per gallon of B20 (in kBtu/Gal)?

Similarly:

Energy/Gal of B20 = 0.8.139 + 0.2.126 = 136.4kBtu/Gal of B20

d. What are the emissions of B20 (in kg CO2/mmBtu)?

CO2/mmBtu of B20 = 12.2/136.1000 = 89 kg CO2/mmBtuof B20

e. The energy required by the trucks being the same with B20 and Diesel, what was the energy required by Safeway's trucks annually (in mmBtu/y)?

Safeway's trucks saved 34,000 tons of CO2 annually by switching to B20, the energy required by the Safeway trucks is therefore:

Energy/year = 34,000/(100-89).1000 = 3.2 106mmBtu/year

f. What was the annual Diesel consumption by Safeway's trucks (in Gal/year)?

Consumption/year of Diesel = 3.2 106/0.139 = 23 106 Gal/y

g. What is the annual Bio-Diesel consumption by Safeway's trucks (in Gal/year)?

Consumption/year of B20 = 3.2 106/0.136 = 24 106 Gal/y

Consumption/year of Bio-Diesel = 0.2.24 106 = 4.7 106 Gal/y

h. Knowing that the yield of Soybean is 53 Gal/acre per year, what soybean acreage is required to run all Safeway's trucks on Biodiesel (in Acre)?

Soybean acreage = 89,300 Acres = 361 km2


Related Discussions:- Bio-diesel

Explain tempering, Tempering is a heat treatment method for metals and all...

Tempering is a heat treatment method for metals and alloys. In steels, tempering is completed to "toughen" the metal by transforming brittle marten site into bainite or a combinat

Isolation and purification of metals, Q. Isolation and purification of meta...

Q. Isolation and purification of metals? metals as a group of elements have acquired a unique importance in the modern world. However, nature' does not generally offer us metal

Show the d-orbital energy level splitting, Q. Show the d-orbital energy lev...

Q. Show the d-orbital energy level splitting? Let us consider one of the consequences of the d-orbital energy level splitting.  [Ti (H2o 6 ) 3+ is a d 1 system meaning that t

Organic chemistry, how to do nomenclature in organic chemistry

how to do nomenclature in organic chemistry

Show experimental observations of werners theory, Q. Show Experimental obse...

Q. Show Experimental observations of werners theory? Werner showed that his postulates are consistent with experimental observations. He made use of basically three kinds of ex

Quantitative determination of ion, Quantitative determination of a number o...

Quantitative determination of a number of ions like Cu, Ag, Zn, Fe, Ni, Co, Cd etc. has been done by using 1.2.3-benztiazole as precipitating agent under different experimental c

Write the chemical equation, Write the chemical equation for the entire com...

Write the chemical equation for the entire combustion of heptane, C 7 H 16 . The heat of combustion for heptane is 4817 kJ/mol. How much heat could be released if 250 kg of hept

2nd law of thermodynamics, Initially 5 mol of an ideal gas with Cv,m=12.5 J...

Initially 5 mol of an ideal gas with Cv,m=12.5 J K^-1 mol^-1 are at a volume of 5 dm^3 and a temperature of 300K. If the gas is heated to 373 K and the volume changed to 10 dm^3, w

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd