Volume 27, Issue 153 (10-2017)                   J Mazandaran Univ Med Sci 2017, 27(153): 95-111 | Back to browse issues page

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Rahmani A, Asgari G, Leili M, Aazami Gilan R. Degradation of Methylene Blue Dye Using Fenton/PhotoFenton-Peracetic Acid (UV/Fe3+-CH3COOH−H2O2) Processes from Aqueous Solutions. J Mazandaran Univ Med Sci. 2017; 27 (153) :95-111
URL: http://jmums.mazums.ac.ir/article-1-9174-en.html
Abstract:   (3338 Views)

Background and purpose: Industries are one of the main sources of producing wastewater accounting for 20% of water pollution. Treatment of dye wastewaters is one of the major challenges in textile industry. The aim of this study was to investigate the performance of advanced oxidation processes, Fenton-Peracetic acid and Photo-Fenton-Peracetic acid for removal of methylene blue (MB) dye from aqueous solutions.
Materials and methods: We conducted an experimental study in which the effects of operating parameters such as pH (3-9), contact time (2-30 min), Peracetic acid concentration (5-50 mg/L), ferric chloride concentration (5-200 mg/L), and methylene blue concentration (5-100 mg/L) were investigated on the removal efficiency of MB dye in the presence and absence of ultraviolet radiation. The experiment was conducted in a batch reactor and the efficiency of method to remove color was measured using a spectrophotometer.
Results: In current study the highest removal efficiency (99%) was attained by Fenton-Peracetic acid process under the optimized conditions as follows: pH 3, Peracetic acid concentration 30 mg/L, ferric chloride concentration 60 mg/L, methylene blue concentration 10 mg/L, and contact time of 30 min, but, the same amount of color was removed in shorter time (20 min) by Photo-Fenton-Peracetic acid process.
Conclusion: High removal efficiency of the Photo-Fenton-Peracetic acid process in a relatively short time, which is because of hydroxyl radical production, show that this process can effectively be applied to remove MB dye and can be considered as a suitable alternative to conventional systems for treatment of wastewaters containing similar organic matters.
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Type of Study: Research(Original) | Subject: Environmental Health

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