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

Table 2

Results of the orthogonal experiment.

Runs	A	B	C	AR88 adsorption (mg/g)
1	650	90	1.0 : 1	379.21
2	650	120	1.5 : 1	438.21
3	650	150	2.0 : 1	451.74
4	650	180	2.5 : 1	498.93
5	700	90	1.5 : 1	454.88
6	700	120	2.0 : 1	695.09
7	700	150	2.5 : 1	706.37
8	700	180	1.0 : 1	639.03
9	750	90	2.0 : 1	923.49
10	750	120	2.5 : 1	978.40
11	750	150	1.0 : 1	732.67
12	750	180	1.5 : 1	857.03
13	800	90	2.5 : 1	1473.59
14	800	120	1.0 : 1	720.40
15	800	150	1.5 : 1	765.39
16	800	180	2.0 : 1	575.22