Study on the adsorption of MnO4- ions onto GO/PVA/Fe3O4 composite

Le Dieu Thu; Tran Vinh Hoang

doi:10.51316/jca.2021.037

Authors

Le Dieu Thu School of Chemical Engineering, Hanoi University of Science and Technology, Vietnam Author
Tran Vinh Hoang School of Chemical Engineering, Hanoi University of Science and Technology, Vietnam Author

DOI:

https://doi.org/10.51316/jca.2021.037

Keywords:

poly vinylalcohol, MnO4-, adsorption

Abstract

In this study, MnO₄^- ions are adsorbed onto GO/PVA/Fe₃O₄ composite. Results showed that after 18 hours, the adsorption process gets equilibrium with the adsorption capacity is 187.8 mg.g^-1, the mass of adsorbent is 0.005 g in 10 mL of 200 mg.L^-1 MnO₄^- ions solution. The influence of temperature was also investigated and with the increasing of temperature, the adsorption capacity also increases, so the adsorption is endothermic. The sorption process obeys pseudo-first-order kinetic.

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