Preparation of Palm Oil Industry’s Biomass-Based Graphene Composite for the Adsorptive Removal of Methylene Blue

Table 2

Kinetic isotherms for different weights of small-sized P-GSC.

Kinetic isotherms	Weight of P-GSC adsor
	5 g	10 g	15 g	20 g
Pseudofirst-order model
(mg/g)	0.5184	0.3430	0.2333	0.2638
(mg^-1)	0.0253	0.0428	0.0935	0.0534
	0.0208	0.0341	0.1425	0.0320
Pseudosecond-order model
(mg/g)	0.9433	2.2084	-1.3700	-0.5843
(g/mg min)	1.2209	0.4378	1.7647	13.3321
	0.9963	0.9981	0.9942	0.9899