Comparison of Acid Red 114 Dye Adsorption by Fe₃O₄ and Fe₃O₄ Impregnated Rice Husk Ash

Table 4

Constants of Langmuir and Freundlich isotherms.

Adsorbent	Langmuir isotherm			Freundlich isotherm
	(mg/g)	(L/g)		(mg/g)
MNP	111	0.197	0.9337	20.53	0.53	0.9933
RHA-MNP	111	0.110	0.9930	14.36	0.57	0.9849