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Issue: Vol. 12 No. 2 (2023): Natural Sciences Issue (Vietnamese)
Section: Natural Sciences Issue (Vietnamese)
DOI: 10.52714/dthu.12.2.2023.1034
Date Published: 14/03/2023
Online Published: 14/03/2023
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Nguyen, T. H., Tran, T. X. M., Duong, V. A., & Bui, V. T. (2023). Investigating the adsorption of methylene blue from water by MnFe2O4/bentonite. Dong Thap University Journal of Science, 12(2), 66-76. https://doi.org/10.52714/dthu.12.2.2023.1034

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Investigating the adsorption of methylene blue from water by MnFe2O4/bentonite

Thanh Hieu Nguyen1, Thi Xuan Mai Tran2, Van Anh Duong3, Van Thang Bui4,
1 Luong Van Cu High school, An Giang province, Vietnam
2 IT and Lab Center, Dong Thap University, Vietnam
3 Personnel Affairs Office, Dong Thap University, Vietnam
4 Academic Affairs Office, Dong Thap University, Vietnam

Main Article Content

Abstract

The MnFe2O4/bentonite was obtained by wet chemical methods and was characterized by X-ray diffraction and N2-adsorption/desorption isotherms. Some factors affecting the MB adsorption process of materials such as pH, initial concentration, adsorbent mass, contact time and temperature were investigated. The results showed that dye adsorption capacity increased by increasing concentration, contact time, initial pH, and temperature. The adsorption kinetics of MB on modulation materials is consistent with the pseudo-second-order kinetics model. The adsorption isotherms well followed the Langmuir isotherm model and maximal adsorption capacity of methylene blue can read 119.05 mg/g at 323K. The adsorption behavior of MnFe2O4/bentonite is an endothermic and spontaneous process. The results show MnFe2O4/bentonite is a promising adsorbent for efficient removal of dye from wastewater.

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