Problem 13
List some advantages and disadvantages of producing and using biodiesel rather than petrodiesel.
Problem 14
List some of the advantages and disadvantages of producing biofuel from algae compared with agricultural biomass. What is a photo-bioreactor?
Problem 15
What is meant by the thermochemical production of a fuel?
Problem 16
What are the three products of the pyrolysis of biomass?
Problem 17
What is meant by the term synthesis gas?
Problem 18
What is the water-gas shift reaction? Describe the methods by which methanol can be produced in volume for use as a fuel.
Problem 20
What is the difference between an energy source and an energy carrier (vector)? Into which category does \(\mathrm{H}_{2}\) fall?
Problem 21
Write the reaction scheme by which hydrogen is produced from natural gas.
Problem 22
Describe the production of hydrogen gas by electrolysis. Can solar energy be used as an energy source for hydrogen production? Why isn't water decomposed directly by absorption of sunlight?
Problem 24
Describe the three ways in which hydrogen can be stored in vehicles for use as a fuel, and discuss briefly the disadvantages of each method.
