Study on the adsorption of Congo Red (CR) onto graphene oxide/ polyvinyl alcohol/ Fe3O4

Le Dieu Thu; Tran Vinh Hoang

doi:10.51316/jca.2021.086

Study on the adsorption of Congo Red (CR) onto graphene oxide/ polyvinyl alcohol/ Fe3O4

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.2021.086

Keywords:

graphene oxide, congo red, adsorption

Abstract

Graphene oxide/polyvinyl alcohol/Fe₃O₄(GPF) nanocomposites, which have been synthesized successfully in the previous study [6], have been investigated the removal of Congo Red (CR) from aqueous solution. The results show that, the adsorption process get equilibrium state after 80 min., the optimal amount of adsorbent is 0.01 g and this process is favorable at low temperature. The Congo red adsorption is better described by the Langmuir model (R² = 0.991) than by the Freundlich model (R² = 0.957). So, it can be presumed that Congo red was adsorbed in a single monolayer with the maximum adsorption capacity of 23.31 mg/g.

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Published

30-01-2022

Issue

Vol. 10 No. 1S (2021): Special Issue 1

Section

Full Articles

How to Cite

Study on the adsorption of Congo Red (CR) onto graphene oxide/ polyvinyl alcohol/ Fe3O4 . (2022). Vietnam Journal of Catalysis and Adsorption, 10(1S), 31-35. https://doi.org/10.51316/jca.2021.086