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Table 5

The Langmuir and Freundlich type isothermal model parameters of BTEX adsorption onto the biochar

Langmuir
Freundlich
BTEXKL (L mg−1)qmax (mg g−1)R2KF [(mg g−1) (L mg−1)1/n]1/nR2
Benzene 0.504 6.211 0.9756 2.596 0.288 0.9757 
Toluene 1.526 10.99 0.9542 6.518 0.201 0.9528 
Ethylbenzene 0.774 21.00 0.9721 9.765 0.283 0.9736 
Xylene 0.478 30.64 0.9837 11.15 0.363 0.9846 
Langmuir
Freundlich
BTEXKL (L mg−1)qmax (mg g−1)R2KF [(mg g−1) (L mg−1)1/n]1/nR2
Benzene 0.504 6.211 0.9756 2.596 0.288 0.9757 
Toluene 1.526 10.99 0.9542 6.518 0.201 0.9528 
Ethylbenzene 0.774 21.00 0.9721 9.765 0.283 0.9736 
Xylene 0.478 30.64 0.9837 11.15 0.363 0.9846 

*T = 25 °C, biochar dosage = 0.01 g.

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