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

Table 3

Thermodynamic values for methyl orange, sunset yellow, and amaranth adsorption (condition: DR/PPy dosage of 1.5 g L^-1, of 200 μg mL^-1, contacting time of 23 h, and pH of 5).

Dye	Temperature (K)	(kJ mol^-1)	(kJ mol^-1)	(kJ mol^-1 K^-1)
Methyl orange	288	-5.5507	24.6863	0.1034
	298	-6.5289
	308	-8.1226
	318	-8.4386
Sunset yellow	288	-3.7738	37.3847	0.1389
	298	-4.1244
	308	-5.6487
	318	-7.9800
Amaranth	288	-1.7943	64.7810	0.2270
	298	-4.0721
	308	-5.9865
	318	-8.7444