Evaluation of Adsorptive Removal of Malachite Green From Aqueous Solutions Using Hevea Brasiliensis

Le Phan Linh; Usama Eldemerdash; Nurlidia Mansor; Yoshimitsu Uemura; Eiji Furuya

Authors

Le Phan Linh Department of Chemical Engineering, Universiti Teknologi Petronas, Tronoh 31750, Malaysia Author
Usama Eldemerdash Department of Chemical Engineering, Universiti Teknologi Petronas, Tronoh 31750, Malaysia Author
Nurlidia Mansor Department of Chemical Engineering, Universiti Teknologi Petronas, Tronoh 31750, Malaysia Author
Yoshimitsu Uemura Center for Biofuel and Biochemical Research (CBBR), Universiti Teknologi Petronas, Tronoh 31750, Malaysia Author
Eiji Furuya Department of Applied Chemistry, Faculty of Enginnering, Meiji University, Kawasaki, Japan Author

Keywords:

Adsorption, malachite green, hevea brasiliensis, bio-adsorbent, wastewater, Langmuir model, Freundlich model

Abstract

Removal of malachite green oxalate from aqueous solutions by adsorption on Hevea Brasiliensis (a type of rubber wood) sawdust was studied experimentally. The aim of this study is to evaluate the bio-adsorbent as a green alternative for the removal of malachite green oxalate. Furthermore, to examine the factors that inuence the adsorption of malachite green oxalate such as adsorbent particle size (54 to 750 µm in average), initial pH (3 to 9) and temperature (30 to 80 ˚C). Results showed that smaller particle size, higher pH and higher temperature are favorable for this adsorptive removal. Investigation of di erent equilibrium isotherms showed that the adsorption of malachite green oxalate on rubber wood sawdust takes place as the Langmuir adsorption. Comparison of the present result with other bio-adsorbents showed a compatitive adsorption capacity for the removal of malachite green.