Adsorption of Malachite Green (MG) as a Cationic Dye on Amberlyst 15, an Ion-Exchange Resin

Table 1

Main properties of Amberlyst 15 wet used in the present study.

Parameter	Specifications
Appearance	Brown-grey beads
Molecular formula	C18H18O3S
Density	0.75
Ionic form as shipped	H+
Concentration of acid sites^‡	≥4.70 eq/kg
Catalyst volatiles	≤1.6%
Water solubility	Insoluble in water
Sensitivity	Hygroscopic
Total volume capacity	>1.70 eq/l
Total weight capacity	>4.70 eq/kg
Moisture retention capacity	52.0 to 57.0%
Mean particle size	0.600 to 0.850 mm
Uniformity coefficient	<1.70
Particle density	1.70 g/mL
Water content	52–57%