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:: Volume 6, Number 2 (summer 2015) ::
j.health 2015, 6(2): 134-143 Back to browse issues page
Efficiency and Kinetics Studies of Photocatalytic Degradation of 4-Chlorophenol from Aqueous Solutions by Sunlight in the Presence of Zinc Oxide Nanoparticles
RM Dianati Tilaki, MA Zazoli, J Yazdani, M Alamgholilu
Mazandaran Univers ity of Medical Sciences
Abstract:   (5946 Views)

Background & Objectives: 4-chlorophenolisone of the phenol derivatives that enters the environment from various sources. 4-chlrophenol ranks the primary pollutant agent. This study evaluated the efficiency and kinetics of photocatalytic degradation of 4-chlorophenol from aqueous solutions by sunlight and zinc oxide nanoparticles. Methods: This is an empirical study and Experiments were performed in the batch system. Determined dosage of ZnO nanoparticles was added to 4-chlorophenol solution (25-200ppm) and samples were allocated under the sunlight during midday hours in summer. Effects of parameters such as ZnO loading, pH, contact time and initial concentration of the polluter 4-chlrophenol were investigated. The remaining concentrations of 4-chlorophenol were analyzed using HPLC. Removal of total organic carbon was measured by TOC analyzer. Results: The results showed that removal efficiency of 4-chlorophenol was achieved 72%in presence of solar energy as means of energy source at both neutral and alkaline pH and catalyst dosage of 1.5grL-1. Efficiency increased as increasing pH and contact time. The photocatalytic degradation of 4-chlrophenol was best fitted with Langmuir–Hinshelwood model, and can be described by pseudo-first order kinetic. Conclusion: In general, 4-chlorophenols can be significantly degraded from aqueous solution by using sunlight as the energy source for the reaction and nano-sized zinc oxide as catalyst.

Keywords: 4-Chlorophenol, Zinc Oxide Nanoparticles, Sunlight, Kinetics Study.
Full-Text [PDF 332 kb]   (2478 Downloads)    
Type of Study: Research | Subject: Special
Received: 2015/05/17 | Accepted: 2015/05/17 | Published: 2015/05/17
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Dianati Tilaki R, Zazoli M, Yazdani J, Alamgholilu M. Efficiency and Kinetics Studies of Photocatalytic Degradation of 4-Chlorophenol from Aqueous Solutions by Sunlight in the Presence of Zinc Oxide Nanoparticles. j.health. 2015; 6 (2) :134-143
URL: http://healthjournal.arums.ac.ir/article-1-584-en.html
Volume 6, Number 2 (summer 2015) Back to browse issues page
مجله سلامت و بهداشت Journal of Health
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