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Table 2

Parameters obtained from fitting the Langmuir (Equation (3)), Freundlich (Equation (4)) and Henry's law (Equation (5)) to equilibrium adsorption data for phenol onto hydrochar

ValueAdj. R2P-value
Langmuir isotherm    
KL (L/mg) 8.7 × 10−3 ± 1.2 × 10−3 0.95 5.59 × 10−04 
 qmax (mg/g) 1.7 ± 0.9 0.95 0.14 
 RL 0.44–0.91   
Freundlich isotherm    
 KF ((mg0.12.L0.7)/g) 1.7 × 10−2 ± 2 × 10−3 0.98 4.23 × 10−05 
 n 1.14 ± 1.2 × 10−3 0.98 8.20 × 10−05 
Henry's law    
 KH (L/mg) 9.2 × 10−3 ± 2 × 10−4 0.80 1.34 × 10−7 
ValueAdj. R2P-value
Langmuir isotherm    
KL (L/mg) 8.7 × 10−3 ± 1.2 × 10−3 0.95 5.59 × 10−04 
 qmax (mg/g) 1.7 ± 0.9 0.95 0.14 
 RL 0.44–0.91   
Freundlich isotherm    
 KF ((mg0.12.L0.7)/g) 1.7 × 10−2 ± 2 × 10−3 0.98 4.23 × 10−05 
 n 1.14 ± 1.2 × 10−3 0.98 8.20 × 10−05 
Henry's law    
 KH (L/mg) 9.2 × 10−3 ± 2 × 10−4 0.80 1.34 × 10−7 
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