Research Article

Enhanced Adsorption of Orange II Using Cationic Surfactant Modified Biochar Pyrolyzed from Cornstalk

Table 2

Parameters of the Langmuir and Freundlich isotherm models for the adsorption of ORII onto the CTAB-modified cornstalk biochar.

Adsorption modelTemperature
288 K298 K308 K

Langmuir
(mg/g)25.426.929.1
(L/mg)0.5860.5090.519
R20.9110.9320.923
Freundlich
(mg/g) 15.3815.4316.44
n8.237.437.18
R20.9850.9820.976