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Applied Biological Chemistry

Table 2 The parameter estimates and coefficients of determination (R2) for fit of the isotherm equation to experimental data of phosphate adsorption at ES and C-ES900

From: Removal of phosphates using eggshells and calcined eggshells in high phosphate solutions

 

Freundlich adsorption isotherm

Langmuir adsorption isotherm

K

1/n

R2

a

b

R2

ES

5.2

0.5342

0.9868

178.6

0.007

0.9917

C-ES900

69.9

0.2803

0.8553

270.3

0.487

1.0000

  1. K: adsorption capacity of phosphate
  2. 1/n: an empirical parameter related to the intensity of sorption
  3. a: maximum adsorption capacities of phosphate (mg/g)
  4. b: binding strength constant of phosphate
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