...Mandarin Peel Biochars via Chemical Activation with NH4Cl...
∆G◦ (kJ/mol), ∆H◦ (kJ/mol), and ∆S◦ (kJ/mol·K) are the Gibbs free energy, enthalpy, and entropy, respectively. R is the ideal gas constant (8.314 J/ mol·K), and T is the absolute temperature (K) of the aqueous solution. ∆H◦ and ∆S◦ were ...