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Environmental Systems Research

Table 4 Isotherm parameters calculated from the graphs

From: Adsorptive removal of malachite green dye from aqueous solution onto activated carbon of Catha edulis stem as a low cost bio-adsorbent

Isotherm

R2

Estimated isotherm parameters

Langmuir

0.98172

qm = 5.620 mg/g, b = 1.02

Freundlich

0.98596

Kf = 2.3 mg/g; n = 2.57

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