TITLE:
Removal of Methyl Violet in Aqueous Solution on Activated Carbon Based on Saba senegalensis Shell Residues
AUTHORS:
Mouhamed Ndoye, Mamadou Faye, Cheikhou Kane, Adama Diop, Mar Codou Guèye Diop
KEYWORDS:
Methyl Violet, Adsorption, Activated Carbon, Saba senegalensis Shell
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.11 No.5,
May
30,
2023
ABSTRACT: Adsorption on activated carbon is one of the most
widely used methods for the removal of dyes. The objective of this study is to
valorize the shells of Saba senegalensis from local product in Senegal
in the form of activated carbon and to test its effectiveness for the removal
of methyl violet. The study was carried out in batch mode for a maximum
duration of one hour with 100 mL of solution treated at 600 rpm. The results
reveal that the granulometry 500 μm gives the best yield with an adsorption
rate of 95%, a mass of adsorbent of 0.2 g gives an adsorption capacity of 20
mg/g, the contact time of one hour with a capacity of 5 mg/g. The study also
showed that the adsorption process of methyl violet is described by the
pseudo-second order kinetic model with correlation coefficient of 0.99. Two
adsorption isotherms were studied, and the results revealed that the Freundlich
model better describes the adsorption of methyl violet on Saba senegalensis shell residue-based activated carbon (SSSRAC). The results indicate that SSSRAC
could be used as a low-cost alternative for the removal of textile dyes such as
methyl violet.