Repository of Research and Investigative Information

Repository of Research and Investigative Information

Ilam University of Medical Sciences

Catalytic ozonation of phenol using copper coated pumice and zeolite as catalysts

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(2012) Catalytic ozonation of phenol using copper coated pumice and zeolite as catalysts. Journal of Research in Health Sciences. pp. 93-97. ISSN 16822765 (ISSN)

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Background: Catalytic ozonation has recently been applied as a new method of contaminant re- moval from water and wastewater. In this study, copper coated pumice and zeolite were used to catalyze the ozonation of phenol as a target pollutant from aqueous solutions. Methods: The pumice and zeolite stone were modified by CuSO4 (1N). Modified pumice and zeo- lite were characterized by Adsorption/Desorption Porosimetry (BET) and Scanning Electron Micro- scope analyses. Ozonation and catalytic ozonation experiments were performed in a 1 L semi- batch reactor containing a prepared phenol solution. The efficiency of catalytic ozonation was in- vestigated by different variables: pH value, contact time, initial phenol concentration, catalyst dose, and radical scavenger. Results: Experimental data indicated that as the pH solution increased, phenol removal in- creased. pH = 8 was measured as the optimum pH. The removal efficiency in single ozonation process (SOP) was 32 and in the catalytic ozonation process (COP) using modified zeolite and pumice was 51 and 63, respectively. Moreover, these processes showed a great ability to min- eralize phenol (up to 30). Using the radical scavenger determined the indirect oxidation as the main pathway of phenol removal in both catalytic processes. Conclusion: The copper modified zeolite and pumice had good performance to remove phenol through catalytic ozonation method.

Item Type: Article
Keywords: Catalytic ozonation Phenol Pumice Zeolite copper sulfate scavenger copper ozone phenol derivative silicate water pollutant adsorption aqueous solution article batch reactor catalysis catalyst chemical modification concentration (parameters) controlled study desorption material coating mineralization ozonation pH measurement scanning electron microscopy time waste component removal analysis chemistry pH procedures water management Hydrogen-Ion Concentration Phenols Silicates Water Pollutants, Chemical Water Purification Zeolites
Page Range: pp. 93-97
Journal or Publication Title: Journal of Research in Health Sciences
Journal Index: Scopus
Volume: 12
Number: 2
ISSN: 16822765 (ISSN)
Depositing User: مهندس مهدی شریفی

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