Synthesis of Potato Starch-Acrylic-Acid Hydrogels by Gamma Radiation and Their Application in Dye Adsorption

Table 1

Adsorption kinetic parameters for the adsorption of MB on hydrogels.

Hydrogel composition	Pseudo-first-order kinetic model				Pseudo-second-order kinetic model			Intraparticle diffusion (mg g^−1 hr^−1)
	(mg/g)	(mg/g)	Rate constant (hr^−1)		(mg/g)	Rate constant (hr^−1)
15% AAc + 5% starch	449	263.94	0.0521	0.958	476.19	0.00036	0.999	0.8718	94.37	74.51	44.46
15% AAc + 7.5% starch	576	365.94	0.0399	0.976	624.22	0.00019	0.994	0.9304	101.09	81.67	44.46
15% AAc + 15% starch	360	251.83	0.0386	0.996	395.96	0.00025	0.992	0.96	59.76	49.62	37.41