If the chemical formula or name of the mineral introduced is in the database, the system will calculate its corresponding exergy and will show the standard Gibbs free energy and Enthalpy value with which the chemical exergy has been calculated.
If the system does not recognize the chemical formula introduced, it is still able to calculate its exergy once you enter its specific Gibbs free energy.
The given exergy is calculated with Eq.1 with the chemical exergy of the elements shown in Table 1, from the latest Reference Environment defined by Szargut et. al. 2005
The Gibbs free energy values are taken from Faure 1991, which is a compilation of the following sources: Woods and Garrels (1987), Weast et al. (1986), Drever (1982), Brookins (1988) , Lindsay (1979) , Krauskopf (1979) , Garrels and Christ (1965) and Tardy and Garrels (1974).
How to enter the chemical formula
1. The program will only recognize numbers and letters belonging to chemical elements. No special characters such as “-”; “+”; “.” are allowed:
You should write “Ag” for: “Ag+”; Ag+2”; “Ag (c)”; The output will show you all possible substances with compound formula “Ag”
Compound “NaAlSi2O6.2H2O” should be rewritten as: “NaAlSi2O6(H2O)2”
2. The program is sensible to upper and lower case letters:
"Co" is Cobalt, while "CO" is Carbon Monoxide
3. The program recognizes only parenthesis “( )”, do not include any square brackets “[ ]” or accolades “{ }”
Antonio Valero Capilla and Alicia Valero Delgado interviewed by Adrián Almazán
We need a material transition, not only energetic, that restores nature and effectively reuses materials. Gaia must be cared for by extending life on Earth and slowing its degradation towards Thanatia.
Thermodynamics for Sustainable Management of Natural Resources
Wojciech Stanek (Editor)
This book examines ways of assessing the rational management of nonrenewable resources. Integrating numerous methods, it systematically exposes the strengths of exergy analysis in resources management.
Thanatia: The Destiny of the Earth's Mineral Resources
A Thermodynamic Cradle-to-Cradle Assessment by (author): Antonio Valero Capilla and Alicia Valero Delgado
Is Gaia becoming Thanatia, a resource exhausted planet? For how long can our high-tech society be sustained in the light of declining mineral ore grades, heavy dependence on un-recycled critical metals and accelerated material dispersion? These are all root causes of future disruptions that need to be addressed today.