Photocatalytic Decolorization of Uranine Using UV/S2O8 and UV/H2O2 Processes from Aqueous Solutions: A Laboratory Study

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RAHMANI A.; KARIMI F.; Vanaei Tabar M.; Zolghadr nasab H.; AHMADI F.

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Journal: Journal of Rafsanjan University of Medical Sciences Year:2019 | Volume:18 | Issue:6 Page(s): 529-544

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Title

Photocatalytic Decolorization of Uranine Using UV/S2O8 and UV/H2O2 Processes from Aqueous Solutions: A Laboratory Study

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Keywords

Aqueous solutionQ1

UranineQ1

UV/S2O8Q2

UV/H2O2Q1

Abstract

Background and Objectives: The entry of textile mills’ wastewater into the environment causes severe disruption to aquatic environments. Thus, the aim of this study was to compare the performance of processes of UV/ S2O8 and UV/H2O2 in removal of Uranine dye from Aqueous solutions. Materials and Methods: In this laboratory study, in a batch reactor, the efficiency of UV/S2O8 and UV/H2O2 photocatalytic methods in removing the dyes of Uranine from Aqueous solutions was investigated. In this study, a UVC low pressure mercury lamp covered by quartz and 150 W was used inside a steel chamber with a high degree of reflection. The pH variables (3-5-7-9 and 11), the concentration of hydrogen peroxide (10-15-20-30 and 50 Mmol/l), the concentration of persulfate (0. 1-0. 5-1-1. 5 and 2 Mmol/l) and primary dye concentrations (10-25-50-75 and 100 mg/l) were optimized. Results: The highest removal efficiency (100%) was attained by UV/S2O8 process under the optimized conditions as follows: pH 3, persulfate concentration 2 Mmol / L, Uranine concentration 10 mg/L and contact time of 5 min, but, by UV/H2O2 process the same amount of dye was removed in the optimal conditions of pH = 3, the hydrogen peroxide concentration 20 Mmol / L, Uranine concentration 10 mg/L and contact time of 2. 5 min. Conclusion: According to the results, the methods used to remove the mentioned paint in the wastewater have a 100% efficiency. Also, the catalyst concentration and reaction time variables have a more effective role in the removal efficiency than the other parameters.

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APA: Copy

RAHMANI, A., KARIMI, F., Vanaei Tabar, M., Zolghadr nasab, H., & AHMADI, F.. (2019). Photocatalytic Decolorization of Uranine Using UV/S2O8 and UV/H2O2 Processes from Aqueous Solutions: A Laboratory Study. JOURNAL OF RAFSANJAN UNIVERSITY OF MEDICAL SCIENCES AND HEALTH SERVICES, 18(6 ), 529-544. SID. https://sid.ir/paper/71440/en

Vancouver: Copy

RAHMANI A., KARIMI F., Vanaei Tabar M., Zolghadr nasab H., AHMADI F.. Photocatalytic Decolorization of Uranine Using UV/S2O8 and UV/H2O2 Processes from Aqueous Solutions: A Laboratory Study. JOURNAL OF RAFSANJAN UNIVERSITY OF MEDICAL SCIENCES AND HEALTH SERVICES[Internet]. 2019;18(6 ):529-544. Available from: https://sid.ir/paper/71440/en

IEEE: Copy

A. RAHMANI, F. KARIMI, M. Vanaei Tabar, H. Zolghadr nasab, and F. AHMADI, “Photocatalytic Decolorization of Uranine Using UV/S2O8 and UV/H2O2 Processes from Aqueous Solutions: A Laboratory Study,” JOURNAL OF RAFSANJAN UNIVERSITY OF MEDICAL SCIENCES AND HEALTH SERVICES, vol. 18, no. 6 , pp. 529–544, 2019, [Online]. Available: https://sid.ir/paper/71440/en

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