. 2020 Jan 14;7:100786. doi: 10.1016/j.mex.2020.100786

Table 2.

Nonlinear kinetic parameters for adsorption of fluoride onto LaFeO₃ NPs at optimal condition (pH: 5, nanoparticles dose: 0.9 g/L, temperature =308 K).

Model		r²	NSD	ARE(%)	SD
Pseudo-second-order		0.8577	0.8873	0.7120	0.0106
$k_{2 p}$	0.9922
$q_{e}$	1.06
Pseudo-first-order		0.6422	1.4232	0.9592	0.0169
$k_{1 p}$	1.043
$q_{e}$	0.2088
Intra-particle diffusion		0.7108	1.2542	0.9498	0.0152
$k_{p}$	0.007144
$C$	0.9803
Fractional power		0.7991	1.0431	0.7734	0.0126
$k$	0.9377
$v$	0.02502
Zero-order		0.5977	1.4849	1.1560	0.0179
$k_{0}$	−0.0004393
$q_{e}$	1.006