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Table 7 Adsorption isotherm

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

Isotherm model

 

Linear

Non-linear

Langmuir

R2

0.9651

0.9988

qm (mg/g)

0.6190

0.5128

Kl (L/mg)

1

2.57

Equation

Y = 1.6153X + 0.8251

\(y=\frac{1.32X}{1+2.57X}\)

Freundlich

R2

0.9438

0.9793

n

1.1298

0.6098

Kf ((mg/g) (L/mg)1/n)

2.4232

0.5625

Equation

Y = 0.8851X + 0.0321

\(y=0.5625{X}^{1.64}\)

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BMC Chemistry

ISSN: 2661-801X

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