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Table 2

Kinetic constants for MB and MG adsorption onto BS and H3PO4-BS

AdsorbentDyeqexp (mg/g)Pseudo-first-order
Pseudo-second-order
qe (mg/g)k1 (1/min)r2qe (mg/g)k2 (g/mg·min)r2
BS MB 52.98 50.72 0.373 0.976 52.04 0.0153 0.990 
MG 32.51 30.79 0.115 0.973 33.04 0.0052 0.997 
H3PO4-BS MB 51.87 48.33 0.150 0.978 50.69 0.0059 0.994 
MG 111.36 101.89 0.681 0.943 104.69 0.0103 0.967 
AdsorbentDyeqexp (mg/g)Pseudo-first-order
Pseudo-second-order
qe (mg/g)k1 (1/min)r2qe (mg/g)k2 (g/mg·min)r2
BS MB 52.98 50.72 0.373 0.976 52.04 0.0153 0.990 
MG 32.51 30.79 0.115 0.973 33.04 0.0052 0.997 
H3PO4-BS MB 51.87 48.33 0.150 0.978 50.69 0.0059 0.994 
MG 111.36 101.89 0.681 0.943 104.69 0.0103 0.967 
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