Table 3 The calculated Langmuir and Freundlich isotherm parameters model parameters for pollutants.

From: Activated sludge recovered from wastewater provides a sustainable approach for removing dyes and heavy metals from effluents

Pollutant

Model

Parameter

Value

Pb(II)

Langmuir

qmax (mg/g)

52.3

KL (L/mg)

0.076

RL

0.035–0.192

R2

0.933

Freundlich

Kf (mg/g)

19.3

N

1.62

R2

0.975

MB

Langmuir

qmax (mg/g)

78.6

KL (L/mg)

0.054

RL

0.048–0.214

R2

0.844

Freundlich

Kf (mg/g)

25.2

N

1.78

R2

0.988