Table 3 Kinetic parameters for the adsorption of Cu(II) ions onto \(\:\text{P}\text{m}\text{A}\text{P}/\text{A}\text{P}\text{T}\text{E}\text{S}{/\text{G}\text{O}}_{\left(6.6\right)}\)composite

From: Fabrication of a poly(m‑aminophenol)/3-aminopropyl triethoxysilane/graphene oxide ternary nanocomposite for removal of Cu(II) from aqueous solution

Model

qe,exp (mg/g)

Parameters

qe,est (mg/g)

k1 (1/min)

R2

χ2

PFO

Linear

224.6

85.46

\(\:0.028\)

0.848

 

Nonlinear

\(\:220.7\pm\:1.06\)

\(\:0.090\pm\:0.01\)

0.999

10.31

  

qe,exp (mg/g)

qe,est (mg/g)

k2 (g/mg min)

R2

χ2

PSO

Linear

224.6

227.3

\(\:1.21\text{*}{10}^{-3}\)

0.999

 

Nonlinear

\(\:228.0\pm\:0.85\)

\(\:1.21\times\:{10}^{-3}\pm\:8.95\times\:{10}^{-5}\)

0.999

2.740

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