پديد آورنده :
رضوان، حامد
عنوان :
بررسي حذف فلزات سنگين شيرابه مواد زائد جامد شهري با استفاده از نانو ذرات اكسيد آهن
مقطع تحصيلي :
كارشناسي ارشد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده عمران
صفحه شمار :
هجده،96ص.: مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
هستي هاشمي نژاد
توصيفگر ها :
جذب , سرب , روي , منگنز , پاسخ سطح
تاريخ نمايه سازي :
1/10/92
استاد داور :
حميد زيلويي، مسعود طاهريون
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
98 Heavy Metals Removal of Landfill Leachate By Using Nano Iron Oxide Sayed Hamed Rezvan Hamed Rezvan67@yahoo com Date of Submission 18 Sep 2013 Department of Civil Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisors H Hasheminejad A Taebi Abstraction Exposure to heavy metals have potential risk for humans being and due to the proximity of the landfill leachate to underground water resources and ecosystems treating leachate is essential The most commonly used method for removing heavy metals is using porous adsorbent especially activated carbon silicon dioxideand aluminum zeolite The problems of porous adsorbent are long time to reach equilibrium due to resistance versus penetration to the pores and difficulty of adsorbent reactivation In addition according to reversible nature of the adsorption adsorbent can be reused therefore the adsorption process is often the first choice for metal removal Among the available adsorbents nanosized metal oxides NMOs including nanosized ferric oxides manganese oxides aluminum oxides titanium oxides magnesium oxides and cerium oxides are classified as the promising ones for heavy metals removal from aqueous systems This is partly because of their large surface areas and high activities caused by the size quantization effect Meanwhile magnetic NMOs such as nanosized iron oxides attract increasing attentions because they can be easily separated from water under a magnetic field and this case is effective for recovery reuse and reduce the costs There are lots of parameters in the removal of heavy metals from aqueous solutions such as pH reaction time amount of adsorbent dose and the amount of metal contaminants in solution The results showed that with in creasing pH heavy metals removal efficiency increases Also Heavy metal removal amount reach edits maximum at 30 min However increasing the reaction time more than 30 min and the removal efficiency does not affect significantly Optimizing the parameters for heavy metal removal was at tempted in aqueous solution by using surface response method Then we discuss removal of heavy metal in leachate The results showed that in the optimal condition nanosized iron oxides were able to remove more than92 lead 99 Manganese and 100 heavy Zinc in aqueous solution Also the adsorption capacities of 97 8mg g for the removal of zinc from aqueous solutions were achieved by magnetite nanoparticles Also we achieved the percentage removal of 2 41 Lead 3 46 Manganese and 5 39 Zinc by using 5g L of nanosized ironoxide adsorbent in leachate retention time of 30min and pH 11 Keywords leachate adsorption nanosized iron oxide lead zinc manganese response surface PDF created with pdfFactory trial version www pdffactory com
استاد راهنما :
هستي هاشمي نژاد
استاد داور :
حميد زيلويي، مسعود طاهريون
