Table 1.

Langmuir and Freundlich parameters of the sorbents for boron removal.

Experimental		Langmuir			Freundlich
Sorbent	qexp (mmol g−1)	qmax (mmol g−1)	kL (L mmol−1)	r 2	kF (mmol1-1/n g−1 L1/n)	n F	r 2
CA	1.88	4.56	1.36 × 10−2	0.989	2.83	2.16 × 10−2	0.988
CA (Air-dried)	1.29	1.99	2.72 × 10−2	0.950	1.41	3.41 × 10−2	0.941
CAAl	1.81	5.21	1.07 × 10−2	0.995	3.10	1.75 ×1 0−2	0.995
CAAl (Air-dried)	1.18	1.48	4.88 × 10−2	0.966	1.13	5.37 × 10−2	0.949
Alumina	0.41	0.59	4.64 × 10−2	0.994	5.02 × 10−2	1.82	0.974