Adsorption of Methyl Violet by Flake Chitosan: Predict Isotherm for Wastewater


Malika Rojkongsub,Ying Arman,Kowit Piyamongkala,



Adsorption,Methyl violet,Flake chitosan,Isotherm,


The adsorption of methyl violet was studied by flake chitosan (commercial grade) as an adsorbent. Batch studies were operated to test the effect of initial concentration on the adsorption of methyl violet. The adsorption isotherms were studied in range of 13.1 – 117.6 mg/L of methyl violet. It was found that the adsorption capacity was increased by increasing of adsorbate from 20.1 – 127.2 mg/g, respectively. Langmuir isotherm was found to fit for methyl violet adsorption onto flake chitosan. Operating line from Langmuir isotherm can be applied for industrial wastewater very well.


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