Table 3.

Kinetic models for diazinon removal by pumice**.

Models →	PFO		PSO		Weber—Morris		Boyd
Statistical metrics ↓	L	NL	L	NL	L	NL	L	NL
Parameters →	K1: 0.0012 qe: 84.32	K1: 0.044 qe: 3.49	K2: 0.022 qe: 3.233	K2: 0.0054 qe: 5.4342	Kid:0.415	Kid:0.442	B: 0.0675 qe: 2.533	B: 0.068 qe: 2.210
R2	0.9368	0.9910	0.9623	0.9914	0.9796	0.9852	0.9515	0.9709
SAE	64.835	27.126	47.137	25.581	53.080	51.808	164.801	133.266
SSE	0.460	0.048	0.371	0.044	0.346	0.229	1.711	1.320
ARE	1.758	0.524	1.622	0.514	1.622	1.372	3.410	3.292
RMSE	0.339	0.109	0.305	0.105	0.294	0.239	0.654	0.574

**Linear (L). Non-linear (NL). Pseudo first order (PFO) and Pseudo second-order (PSO).

$q_{e,exp}^i,q_{e,pred}^i$ are the q_e values of the experimental and predicted values, respectively.

p is the number of parameters. n is the number of experimental runs.

Pseudo-first-order model (PFO) & pseudo-second-order model (PSO).

Units: q_e (mg/g), K₁ (min⁻¹), K₂ (g mg⁻¹ min^-1), K_id (mg/g min^0.5), Di (cm²).