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Table 8 Adsorption kinetics and intraparticle diffusion

From: Optimization of Cr (VI) removal from aqueous solution with activated carbon derived from Eichhornia crassipes under response surface methodology

Kinetics model

  

Pseudo-first-order

R2

0.5959

K1 (min−1)

0.054

Equation

Y = 0.0236X—3.2042

Pseudo-second-order

R2

0.9956

K2 (g/mg/min)

0.8859

Equation

Y = 25.294X + 723.47

Intraparticle diffusion

R2

0.9396

C

0.0145

KID (mg. g−1min0.5)

0.0400

Equation

Y = 0.0016X + 13.017

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BMC Chemistry

ISSN: 2661-801X

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