Volume 13, Issue 1 (4-2025)
J Environ Health Eng 2025, 13(1): 50-64 |
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Ethics code: IR.LARUMS.REC.1399.009
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Damroudi A, Rostaei E, Mengelizadeh N, Moradnia M. Evaluation of the Efficiency of Bentonite@Fe3O4 Composite in Activating Peroxymonosulfate for the Degradation of Acid Blue 113 Dye from Aqueous Solutions. J Environ Health Eng 2025; 13 (1) :50-64
URL: http://jehe.abzums.ac.ir/article-1-1113-en.html
URL: http://jehe.abzums.ac.ir/article-1-1113-en.html
Department of Environmental Health Engineering, School of Health, Larestan University of Medical Sciences, Lar, Iran
Abstract: (61 Views)
Background: The presence of synthetic dyes that are toxic and non-biodegradable, in receiving waters leads to reduced dissolved oxygen, water turbidity, and decreased photosynthesis in aquatic plants. Therefore, the aim of this study was to degrade acid blue 113 (AB113) dye through the generation of reactive radicals by activating peroxymonosulfate (PMS) using a Bentonite@Fe3O4 catalyst.
Materials and Methods: In this study, the Bentonite@Fe3O4 catalyst was synthesized using a hydrothermal-chemical method and characterized through diagnostic analyses. In the catalytic process, the effects of various parameters such as pH (3–11), catalyst dosage (0–400 mg/L), PMS concentration (0–1 mM), and reaction time (0–120 min) were investigated. The identification of reactive radicals and the toxicity test of the treated solution were also conducted.
Results: Successful synthesis of the Bentonite@Fe3O4 catalyst was confirmed by SEM, XRD, and FTIR analyses. Complete dye removal was achieved under the following operational conditions: pH 3, catalyst dosage of 200 mg/L, PMS concentration of 0.5 mM, and a reaction time of 100 min. Sulfate radicals (SO4•⁻), hydroxyl radicals (•OH), and superoxide radicals (O2•⁻) were identified as the active species in the dye degradation process. A 1.56-fold increase in the growth of mint plants in the treated solution compared to the untreated one emphasized the effective toxicity reduction achieved by the current process.
Conclusion: The findings of the study demonstrated that catalytic treatment of the AB113 solution could produce an effluent suitable for safe disposal.
Materials and Methods: In this study, the Bentonite@Fe3O4 catalyst was synthesized using a hydrothermal-chemical method and characterized through diagnostic analyses. In the catalytic process, the effects of various parameters such as pH (3–11), catalyst dosage (0–400 mg/L), PMS concentration (0–1 mM), and reaction time (0–120 min) were investigated. The identification of reactive radicals and the toxicity test of the treated solution were also conducted.
Results: Successful synthesis of the Bentonite@Fe3O4 catalyst was confirmed by SEM, XRD, and FTIR analyses. Complete dye removal was achieved under the following operational conditions: pH 3, catalyst dosage of 200 mg/L, PMS concentration of 0.5 mM, and a reaction time of 100 min. Sulfate radicals (SO4•⁻), hydroxyl radicals (•OH), and superoxide radicals (O2•⁻) were identified as the active species in the dye degradation process. A 1.56-fold increase in the growth of mint plants in the treated solution compared to the untreated one emphasized the effective toxicity reduction achieved by the current process.
Conclusion: The findings of the study demonstrated that catalytic treatment of the AB113 solution could produce an effluent suitable for safe disposal.
Type of Study: Applicable |
Subject:
Special
Received: 2025/02/20 | Accepted: 2025/03/29 | Published: 2025/04/16
Received: 2025/02/20 | Accepted: 2025/03/29 | Published: 2025/04/16
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