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The comparision of Coprinus cinereus peroxidase enzyme and TiO 2 catalyst for phenol removal

Sarkhanpour, R ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1080/10934529.2013.726835
  3. Publisher: 2013
  4. Abstract:
  5. This article investigates phenol removal from an aqueous solution by using enzymatic and photocatalytic methods and the efficiency of these methods has been compared. In enzymatic and photocatalytic methods, Coprinus cinereus, peroxidase enzyme and commercial TiO2 powders (Degussa P-25) in aqueous suspension were used, respectively, in ambient temperature. The effects of different operating parameters such as duration of process, catalyst dosage or enzyme concentration, pH of the solution, initial phenol concentration and H2O2 concentration on both processes were examined. In enzymatic method, efficiency of degradation reached 100% within 5min, while in the photocatalytic method, the efficiency of degradation reached approximately 70% within 60min. In photocatalytic method, there is an optimum concentration for catalyst dosage (near 2.0g/L) to gain 80% efficiency, while in the enzymatic method, increasing the amount of enzyme could lead to an increase in the efficiency up to 100%. Moreover, the optimum pH in enzymatic and photocatalytic methods stood at 8.0 and 7.0, respectively. In both methods, the addition of different amounts of H2O2 increased the degradation efficiency to 100%
  6. Keywords:
  7. Coprinus cinereus peroxidase ; Enzymatic method ; Phenol removal ; Photocatalytic method ; TiO 2 ; Enzymatic methods ; H 2O 2 ; Photocatalytic methods ; TiO ; Catalysts ; Degradation ; Efficiency ; Enzymes ; Phenols ; Titanium dioxide ; Photoelectrochemical cells ; Hydrogen peroxide ; Coprinus cinereus ; PH measurement ; Photocatalysis ; Coprinus ; Peroxidase ; Phenol ; Photolysis ; Spectrophotometry ; Titanium ; Waste Disposal, Fluid ; Water Pollutants, Chemical ; Coprinopsis cinerea
  8. Source: Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering ; Volume 48, Issue 3 , 2013 , Pages 300-307 ; 10934529 (ISSN)
  9. URL: http://www.tandfonline.com/doi/abs/10.1080/10934529.2013.726835#.VksKbi6Hi-E