Hydrothermally Produced Activated Carbon Impregnated with ZnO for the Adsorptive Removal of Toxic Pharmaceutical Contaminants from Aqueous Solution

Table 2

Adsorption isotherm models and nonlinear equations.

Isotherm model	Equation	Parameters	Reference
LIM		: Langmuir adsorption constant (L/mg)	[36]
FIM		: Freundlich constant (mg/g) (L/mg)^1/n	[37]
		n: Freundlich exponent
TIM		B: RT/b corresponds to the enthalpy of adsorption	[38]
		b corresponds to the Temkin constant, associated with the heat of adsorption (measured in J/mol)
		T denotes the temperature in Kelvin
		R represents the universal gas constant
		A represents the binding constant at equilibrium, signifying the maximum binding energy (measured in L/g)