Treatment of Yellow Phosphorus Slag and Reuse of It as an Absorbent of Chromium (VI) Ions and Methylene Blue

Table 15

Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich isotherm constants of MB adsorption using YPS.

Langmuir constant				Freundlich constant
Qo (mg·g^−1)	KL (L·mg^−1)	RL	R^2	1/n	N	kf (mg·g^−1)	R^2
22.989	1.642	0.434	0.960	0.703	1.422	16.924	0.925
Temkin constant				Dubinin–Radushkevich constant
AT (L·mg^−1)	bT	B (J·mol^−1)	R^2	Qs (mg·g^−1)	Kad (mol^2·kJ^−2)	E (kJ·mol^−1)	R^2
17.398	491.104	5.045	0.898	14.803	0.044	3.370	0.905