Development of Durian Rind/Polypyrrole Composite and Its Application in Removing of Anionic Dyes

Table 1

Kinetic parameters for different models (conditions: DR/PPy dosage of 1.5 g L^-1, pH of 5, and temperature of 40°C).

Dye	(μg mL^-1)	Pseudo-first-order			Pseudo-second-order			Intraparticle diffusion
								(step 1)	(step 2)	(step 3)
Methyl orange	100	22.86	0.0035	0.9937	63.37	0.0015	0.9988	0.9745	0.9915	0.9830
	150	22.58	0.0017	0.9806	90.42	0.0018	0.9991	0.9963	0.9894	0.9062
	200	17.83	0.0012	0.9663	151.98	0.0025	0.9996	0.9839	0.8062	0.9396
Sunset yellow	100	22.28	0.0059	0.9603	67.34	0.0019	0.9999	0.9653	0.9606	0.9446
	150	35.65	0.0032	0.9872	97.37	0.0010	0.9989	0.9589	0.9744	0.9777
	200	34.70	0.0023	0.9687	157.98	0.0012	0.9997	0.9677	0.9996	0.9941
Amaranth	100	57.24	0.0039	0.9818	77.46	0.0002	0.9968	0.9835	0.9991	0.9887
	150	74.73	0.0042	0.9922	105.49	0.0002	0.9964	0.9715	0.9802	0.9806
	200	76.61	0.0010	0.9869	124.69	0.0006	0.9917	0.9885	0.9240	0.9820