Materials

qe,exp

(mg/g)

Pseudo-first-order model

Pseudo-second-order model

qe,cal (mg/g)

k1

R2

qe,cal (mg/g)

k2

R2

PVA/PAA

38.52

33.04

0.0364

0.987

42.16

8.24 × 10−4

0.997

MnO2-PVA/PAA

227.87

193.29

0.0405

0.957

242.56

1.69 × 10−4

0.987