Volume 7, Issue 4 (1-2015)                   ijhe 2015, 7(4): 557-568 | Back to browse issues page

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khorsandi H, Mohammadi A, Kariminejad F, Haghighi M, Alizadeh R. Determination of Optimum Conditions for Fenton Oxidation to Remove Linear Alkyl Benzene Sulfonate using Taghuchi Method and Requirement Evaluation to it for Additional Treatment of Biolac Effluent. ijhe. 2015; 7 (4) :557-568
URL: http://ijhe.tums.ac.ir/article-1-5505-en.html
1- Assoc. Prof. of Social Determinant of Health Research center and Environmental Health Engineering, Health Faculty, Urmia University of Medical Sciences, Urmia, Iran , hassankhorsandi@yahoo.com
2- Ph.D Student of Environmental Health Engineering, Health Faculty, Yazd University of Medical Sciences, Yazd, Iran
3- M.S. Student of Environmental Health Engineering, student research committee,Health Faculty, Mazandaran University of Medical Sciences, Sari, Iran
4- M.S. Student of Environmental Health Engineering, Health Faculty, Kashan University of Medical Sciences, Kashan, Iran
5- M.S. of Environmental Health Engineering, Municipal Water and Wastewater Company of West Azerbaijan province, Urmia, Iran
Abstract:   (5360 Views)

Background & Objectives: Entering LAS through the wastewater plant’s effluent to water resources causes taste and odor changes, aquatics death, oxygen transfer limitation, and disorders in water treatment processes. Therefore, the study objective was to determine optimum conditions for fenton oxidation process to remove linear alkyl benzene sulfonate from aqueous environments using taguchi method and its requirement evaluation for additional treatment of Biolac effluent. Materials &Methods: LAS removal using Fenton oxidation was evaluated in a 500 mL laboratory-scale batch reactor. In order to save the costs, to determine the optimum conditions of the Fenton oxidation, 25 runs were computed using Taghuchi method by Minitab 16 software. Sampling and required tests were performed based on standard methods examination for water and wastewater. For evaluation of Biolac process sufficiency in LAS removal, biolac efficiency in Urmia Wastewater Treatment Plant was studied in 2012. Results: Based on the LAS removal and chemicals required, Minitab software (Ver. 16) recommended the optimum conditions of Fenton oxidation at 900 mg/L H2O2, 170 mg/L Ferrous ion, pH of 4, and reaction time of 20 minutes. It was found that the Fenton oxidation for LAS removal had 86.5% efficiency under optimum condithions and it was second order reaction with the rate coefficient of 0.0152 L/mg.min. Biolac process does not need any additional treatment due to meeting LAS standard in municipal wastewater treatment. Thus, this process decreased annually mean LAS from 5.28 mg/L to 0.734 mg/L in municipal wastewater. Conclusion: Although the Fenton oxidation appears as a chemical process with high efficiency in the removal of LAS, the low efficiency of COD corresponding to the LAS indicated partial decomposition of linear alkyl benzene sulfonate by Fenton oxidation.

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Type of Study: Research | Subject: Air
Received: 2015/07/25 | Accepted: 2015/07/25 | Published: 2015/07/25

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