Table 1 Phenol and BPA adsorption kinetics onto KOH-SSAC (0.4 g/L) at pH of 6.0 and 298 K ± 2.

Pollutants	Initial concentration, mg/L	q_{e th.}, mg/g	Pseudo-first order \({q}_{t}={q}_{e}(1-{e}^{-k_{1}t})\)			Pseudo-second order \({q}_{t} = \frac{{k}_{2}q_e^2t}{1+{k}_{2}{q}_{e}t}\)
Pollutants	Initial concentration, mg/L	q_{e th.}, mg/g	q_{e, Cal.}, mg/g	k₁	R²	q_{e, Cal.}, mg/g	k₂	R²
Phenol	10	25.58	24.49	0.239	0.970	26.5	0.015	0.992
	20	45.25	43.38	0.254	0.966	46.89	0.009	0.989
	40	85.35	81.43	0.211	0.953	89.20	0.003	0.991
	60	120.98	109.88	0.177	0.982	121.52	0.002	0.996
	80	143.65	132.43	0.194	0.984	144.86	0.002	0.994
	100	166.93	152.45	0.186	0.977	167.25	0.001	0.990
BPA	10	26.23	22.98	0.365	0.985	27.06	0.033	0.998
	20	50.28	47.76	0.334	0.984	52.20	0.014	0.997
	40	93.45	90.60	0.361	0.988	94.98	0.008	0.996
	60	123.56	121.56	0.371	0.986	126.72	0.007	0.998
	80	152.65	144.25	0.272	0.991	153.67	0.003	0.996
	100	179.65	167.38	0.193	0.981	182.76	0.0017	0.998

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