Biogenic Synthesis of Magnetite Nanoparticles Using Leaf Extract of Thymus schimperi and Their Application for Monocomponent Removal of Chromium and Mercury Ions from Aqueous Solution

Table 3

Langmuir and Freundlich isotherm model constants and correlation coefficients for adsorption of chromium and mercury.

Isotherms	Cr(VI)		Hg(II)
		Estimated isotherm parameters		Estimated isotherm parameter
Langmuir	0.90	(mg/g) =0.951; (L/mg) =0.078	0.9741	(mg/g) =2.631; (L/mg) =0.287
Freundlich	0.9814	=1.614; =2.07	0.967	=3.16; =3.40