9680

8924

كارشناسي ارشد

محيط زيست

اصفهان: دانشگاه صنعتي اصفهان، دانشكده منابع طبيعي

1393

چهارده،77ص.: مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

نوراله ميرغفاري، محسن سليماني

93/12/23

حسين شريعتمداري، محمد سراجي

مهندسي منابع طبيعي

ID8924

78 Phenol Removal From Wastewater Using Activated Carbon Produced From Biological Sludge of Oil Refinery Treatment Plant Zahra Mostarshed mostarshed@yahoo com December 17 2014 Department of Natural Resources Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Persian Dr Nourollah Mirghaffari mnorolah@cc iut ac ir Dr Mohsen soleimani m soleimani@cc iut ac irAbstractPollution of industrial effluents including oily wastewaters having organic toxic compounds such as phenol isone of the most important environmental issues There are many processes to remove the phenolic compoundswhich are mostly expensive and less efficient In this regard adsorption by a low cost carbonaceous adsorbent isone of the efficient and cost effective approaches In this study the biological sludge of Tehran oil refinerywastewater unit was used for production of activated carbon and removal of phenol The biological sludge wasactivated after carbonization using various chemical and physical methods After adsorption tests of samples thesample activated with steam at 950 c was chosen for the next experiments Some characteristics of the producedactivated carbon including concentration of heavy metals leaching tests Fourier Transform InfraredSpectroscopy FT IR specific surface area using BET method and scanning electron microscope SEM weredetermined The specific surface area of the carbonized and activated carbon samples were 10 4 and 86 2 m2 g respectively Besides the images obtained by SEM showed an increase in the number of pores in the producedactivated carbon Adsorption tests were done by evaluating the effect of the four factors including the adsorbentamount initial phenol concentration pH and contact time in four levels using Taguchi method The maximumadsorption amount of phenol in optimum conditions was 96 2 Results showed that amount of the adsorbentand contact time have the most influence on phenol adsorption Furthermore kinetic models of phenol adsorptionon produced activated carbon showed that the pseudo first order model was better fit adsorption data incomparison to the models of pseudo second order Elvich and interparticle defusion Fitting the results with theisotherm models of Langmuir Freundlich Redlich Peterson and Temkin indicated that the phenol adsorptionusing the produced activated carbon was more followed by Redlich Peterson model In the column tests thehighest amount of adsorption and desorption were 21 and 45 respectively Phenol efficiency of producedactivated carbon in wastewater samples of oil refinery was 73 Overall based on the obtained results theproduced activated carbon showed an efficient ability for removal of phenol from aqueous solutions Keywords Adsorption Phenol Activated carbon Biological sludge

نوراله ميرغفاري، محسن سليماني

حسين شريعتمداري، محمد سراجي