Table 4 Kinetic Parameters for the removal of Rhodamine B.

From: Biosynthesis of calcium oxide nanoparticles by employing Mulberry (Morus nigra) leaf extract as an efficient source for Rhodamine B remediation

Kinetic model

Rhodamine B dye

Pseud-first-order

CaO NPs

 K1 (g/mg.min)

0.02899

 qe1 (mg/g)

2.26115E−06

 R2

0.80609

Pseudo-second-order

(TYPE-1)

 K2 (g/mg.min)

− 0.125

 qe2 (mg/g)

9.618159

 R2

0.999

Pseudo-second-order

(TYPE-2)

 K2 (g/mg.min)

− 0.12341

 qe2 (mg/g)

0.843085

 R2

0.67685

Pseudo-second-order

(TYPE-3)

 K2 (g/mg.min)

− 0.12333

 qe2 (mg/g)

9.6113

 R2

0.6758

Pseudo-second-order

(TYPE-4)

 K2 (g/mg.min)

− 0.05942

 qe2 (mg/g)

9.6515

 R2

0.67981

Elovich Kinetic model

 α

17.42836

 β

− 9.4719

 R2

1

Intraparticle diffusion

 C

9.96858

 Kdif

− 0.02524

 R2

0.8231

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