Table 2 Pseudo first order and Pseudo second order kinetic model.

From: Adsorptive removal of Pb2+ from wastewater using ZnO-Biochar nanocomposite

Model

Parameter

Linear

Pb²⁺

PFO

qe(mg/g)

39.16

K1

−4.5E-05

R2

0.867

PSO

qe(mg/g)

43.75

qe2(mg/g)

1914.0625

K2

0.00084

R2

0.89925