Principles of Green Chemistry

Economic energy intensity determined by two different measures for nine selected countries. Gross Domestic Product (GDP) can be measured using either market exchange rates (MER) or purchasing power parity (PPP).

• Brecha, Berney, and Craver, Am. J. Physics., Vol. 75, No. 10, October 2007

This is profound:

• “…the Club of Rome, which has since been updated twice. Without going into the details of why this work should still be read, the main points are borne out by the calculations presented in this paper: fossil-fuel resources are finite, exponential growth cannot be sustained in a finite ecosystem, the population increases are placing severe pressures on both the ecosystem and on natural resource supplies.”

• Brecha, Berney, and Craver, Am. J. Physics., Vol. 75, No. 10, October 2007

A Sustainable Fuel Process-Acetylene

Chemical Reactions: acetylene from limestone and charcoal
Biomass Pyrolysis	CxHyOz heat C(s) + Volatiles
Calcination	CaCO3 CaO + CO2(g) heat (ime)
Reduction	CaO + 3 C(s) CaC2(s) + CO(g)
Acetylene Generation	CaC2(s) + H2O(l) C2H2(g) + CaO (lime)
Combustion	C2H2(g) + 2.5O2 2 CO2(g) + H2O

• continued

• Reaction

Comments: (Acetylene Fuel)

• Net thermodynamics energy – positive
• Carbide preparation requires
• 3100 kWh/tonne
• Solar/wind energy
• CO2(g) emissions will return to charcoal via
• trees and pyrolysis
• Limestone is widely distributed
• Carrier for carbon
• Lime, recycle or reuse
• Patents exist for acetylene fuel

Thank you for your attention!

• Thank you for your attention!
• Questions?