Interestingly, CO2 is non-toxic, non-corrosive and nonflammable and it can be easily stored in liquid form under
mild pressure. Therefore, the problem of process safety does
not appear in the case of CO2 application. Besides, the process can be easily integrated in existing syngas conversion
plants without any significant modification (Arakawa, 1998).
Feedstock CO2 is inexpensive and abundant. Existing and
proposed plants for carbon sequestration and storage (CSS)
are candidate sources of CO2. Other resources are flue gas
from coal-fired and natural gas-fired electric power plants,
gaseous streams in several industrial processes (such as
ammonia and hydrogen manufacturing, coal gasification,
WGS units, cement factories, aluminium production and fermentation plants) and CO2 accompanying natural gas and
geothermal energy producing wells. After effective separation from air (e.g., by membrane separation or selective
absorption technique), excess atmospheric CO2 offers another