Effect of Sodium Benzenesulfonate on SO₄²⁻ Removal from Water by Polypyrrole-Modified Activated Carbon

Table 1

Kinetics parameters for SO₄²⁻ adsorption.

C0 (mg L^−1)^−1	Pseudo-first-order model			Pseudo-second-order model
	k1 (min^−1)	qe (mg g^−1)	R^2	k2 (min^−1)	qe (mg g^−1)	R^2
400	0.2684	17.331	0.9418	0.0012	29.239	0.9981
500	0.3298	21.911	0.9033	0.0008	35.842	0.9906
600	0.3315	22.642	0.9282	0.0011	34.483	0.9903
700	0.3196	21.865	0.9622	0.0011	35.587	0.9919
800	0.3094	23.231	0.9729	0.0015	33.670	0.9906