Adsorbent Ability of Treated Peganum harmala-L Seeds for the Removal of Ni (II) from Aqueous Solutions: Kinetic, Equilibrium and Thermodynamic Studies

Table 2

Isotherm constants for the adsorption of Ni ions on TPHS.

Isotherm model	Parameters	TPHS
Langmuir isotherm	𝑞𝑚 (mg/g)	91.743
	𝐾𝐿 (L/mg)	0.049
	𝑅^2	0.997
Freundlich isotherm	1/𝑛	0.620
	𝐾𝐹 (L/mg)	1.836
	𝑅^2	0.942
Temkin isotherm	𝑀𝑇 (mg/g)	9.872
	𝐾𝑇 (L/mg)	7.690
	𝑅^2	0.810