Abstract
In this article one of the advanced oxidation processes (AOP) combined methods, photocatalyst /H2O2, is utilized in order to study photodegradation of ethylene dichloride (EDC) in water. Nano Titanium (IV) Oxide, supported on Clinoptilolite (CP) (Iranian natural zeolite) using solid-state dispersion (SSD) method for improvement of its photocatalytic properties. The results show that the TiO2/Clinoptilolite (SSD) is an active photocatalyst. The effects of five important photocatalytic reaction parameters including the initial concentration of ethylene dichloride, the ratio of TiO2/Clinoptilolite, the catalyst concentration, H2O2 concentration and pH in photodegradation of ethylene dichloride were examined. In this experiments, the design and also the optimum parameters were obtained by Taguchi Method, using Design Expert8® software. Taguchi's L27 (5^3) orthogonal array design was employed for the experimental plan. Four parameters were found to be significant whereas, pH was found to be an insignificant parameter after conducting experiments. A first order reaction with K = 0.007 min-1 was observed for the photocatalytic degradation reaction.
Highlights
Effects of several different pollutions such as phenol compounds, alcohols, organic acids, hydro-carbonic sulfur compounds, pesticides and insecticides compounds, dyes, output wastewater from various industries and etc. using photocatalytic oxidation has been investigated on sewage treatment
The results show that the TiO2/Clinoptilolite (SSD) is an active photocatalyst
Temperature is one of the effective parameters on photocatalytic reactions that are usually set at ambient temperature, but due to high volatility of ethylene dichloride in the ambient temperature and aeration during process, large amount of EDC would be vaporized from the solution
Summary
Effects of several different pollutions such as phenol compounds, alcohols, organic acids, hydro-carbonic sulfur compounds, pesticides and insecticides compounds, dyes, output wastewater from various industries and etc. using photocatalytic oxidation has been investigated on sewage treatment. Using photocatalytic oxidation has been investigated on sewage treatment All of these experiments show high efficiency in degradation and removal of these pollutions from water and sewage by this method [1,2]. Usual biological treatment methods for hazardous compounds such as chlorinated hydrocarbons are not efficient, because of high toxicity of these compounds which results in destroying microorganisms. TiO2 is one of the most effective photocatalysts due to its biological and chemical inertness and photo stability in near- UV band energy gap, and can be used as a fine powder or crystals dispersed in water and wastewater treatment applications. Matthews [4] showed that the photo efficiency of TiO2 is suppressed when TiO2 is in interaction with the zeolite
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
