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3 2016, 1(1): 7-17 Back to browse issues page
Evaluation of Equilibrium and Kinetic Studies in Simultaneous Removal of Phenol and Divalent Cadmium Cd (II) Using Nano Photocatalytic Process UV/ZnO from Synthetic Effluent
MR Samarghandi , MT Samadi , J Mehralipour , R Harati
Abstract:   (1044 Views)

Background & objectives: Water resources contamination to phenol and cadmium is a serious problem and threat to human health due to their high toxicity. The purpose of this study was evaluation of equilibrium and kinetic studies to remove phenol and divalent cadmium Cd (II) from synthetic effluent using nano photocatalytic process UV/ZnO.

Methods: This experimental study was conducted using a photoreactor in a batch system at laboratory scale. A photoreactor equipped with low-pressure mercury vapor lamp was used with emphasis on the effects of various parameters, presence of formate, and COD removal rate. Characterization of zinc oxide nanoparticles was determined by using Transmission Electron Microscopy (TEM), X-ray diffraction (XRD), and Scanning Electron Microscope (SEM).

Results: The obtained results showed that optimum pH to remove phenol and cadmium by UV/ZnO process is 7. Presence of formate decreased phenol and increased cadmium removal efficiencies. Finally presence of phenol increases removal of cadmium and cadmium presence leads to increase in phenol removal efficiencies. Removal efficiency of 60% was obtained for COD after 120 min. Obtained result of experimental kinetics and isotherm models showed that phenol and cadmium removal kinetics to follow zero-order and pseudo-first order equations, respectively. Adsorption isotherms of phenol and cadmium followed Langmuir model.

Conclusions: Based on the obtained results, the nanophotocatalysis UV/ZnO process is suitable for simultaneous removal of phenol and cadmium from synthetic effluent.

Keywords: Phenol, Divalent Cadmium, Nanophotocatalysis‌, Zinc Oxide, Synthetic Effluent.
Full-Text [PDF 574 kb]   (593 Downloads)    
Type of Study: Research | Subject: General
Received: 2015/12/27 | Accepted: 2015/12/27 | Published: 2015/12/27
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Samarghandi M, Samadi M, Mehralipour J, Harati R. Evaluation of Equilibrium and Kinetic Studies in Simultaneous Removal of Phenol and Divalent Cadmium Cd (II) Using Nano Photocatalytic Process UV/ZnO from Synthetic Effluent. 3. 2016; 1 (1) :7-17
URL: http://oeh.arums.ac.ir/article-1-32-en.html
Volume 1, Issue 1 (winter 2016) Back to browse issues page
فصلنامه سلامت محیط و کار Occupational and Environmental Health
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