Removal of Acid Red 88 Using Activated Carbon Produced from Pomelo Peels by KOH Activation: Orthogonal Experiment, Isotherm, and Kinetic Studies

Table 3

Range analysis of the orthogonal experiment.

Levels	A	B	C	AR88 adsorption
K1	1768	3231.2	2471.2	∑ = 11289.47; ∑/16 = 705.59
K2	2495.2	2832	2515.6
K3	3491.6	2656	2645.6
K4	3534.4	2570.4	3657.2
k1	442	807.8	617.8
k2	623.8	708	628.9
k3	872.9	664	661.4
k4	883.6	642.6	914.3
R	441.6	165.2	296.5