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:: Volume 1, Issue 4 (9-2014) ::
jehe 2014, 1(4): 329-340 Back to browse issues page
Optimization of Catalytic Ozonation Process for Formaldehyde Mineralization from Synthetic Wastewater by Fe/MgO Nanoparticles Synthesis by Sol-Gel Method by Response Surface Model
Ghorban Asgari, Alireza Rahmani, Javad Faredmal, Abdol Motaleb Seyedmohammadi, Jamal Mehralipour *
Students’ Research Committee (SRC), Faculty of Public Health, Hamadan University of Medical Sciences and Health Services, Hamadan, Iran
Abstract:   (4794 Views)

Background: Design experiment stages of formalin mineralization process by center composition design (CCD) cause ease of work, reducing the number of samples, increasing the accuracy of optimized conditions and the interaction parameters determined during the process. The aim of this study was optimization of catalytic ozonation process for formaldehyde mineralization from synthetic wastewater by Fe/MgO nanoparticles synthesis by sol-gel method by response surface model.

Methods: This experimental study was conducted in a semi-batch reactor, using a RSM by taking 3 factors in the final stage of pH (7-9), reaction time (10-20 min) and catalyst dose (1.1-1.3 g/L) was investigated. Synthesis of nanoparticles was done by sol-gel method. The results were analyzed by Design Expert 7.0.1 software.

Results: The results showed that the process was dependent on the parameters studied and changing each parameter, affected the process efficiency and other parameters. The optimum conditions predicted for the process was 86.51% of mineralization efficiency. Optimum condition included pH=8.82, reaction time of 20 minute and catalyst dose of 1.3 g/L. The correlation coefficient for the process was determined 0.91.

Conclusion: Using a statistical model could reduce the number of experiments, the accuracy and the prediction process. The catalytic ozonation process has the ability to remove formaldehyde with high efficiency and the process was environmental friendly.

Keywords: Formalin, Catalytic ozonation, Fe/MgO nanoparticles, Response surface model, Synthetic wastewater.
Full-Text [PDF 674 kb]   (933 Downloads)    
Type of Study: Research | Subject: General
Received: 2015/06/17 | Accepted: 2015/06/17 | Published: 2015/06/17
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Asgari G, Rahmani A, Faredmal J, Seyedmohammadi A M, Mehralipour J. Optimization of Catalytic Ozonation Process for Formaldehyde Mineralization from Synthetic Wastewater by Fe/MgO Nanoparticles Synthesis by Sol-Gel Method by Response Surface Model. jehe. 2014; 1 (4) :329-340
URL: http://jehe.abzums.ac.ir/article-1-88-en.html


Volume 1, Issue 4 (9-2014) Back to browse issues page
مجله مهندسی بهداشت محیط Journal of Environmental Health Enginering
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