Table 7 The Langmuir and Freundlich isotherms model constants.

From: RSM-CCD design of volcanic ash/ rice husk ash based phosphate geopolymer for crystal violet adsorption: kinetics and isotherms

 

Langmuir isotherm

Freundlich isotherm

Adsorbants

KL

qemax

RL

RMSD

R2

KF

n

RMSD

R2

GPa

0.235

14.668

0.040

0.498

0.996

4.187

2.117

0.166

0.987

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