پديد آورنده :
سپهري صادقيان، سالومه
عنوان :
بررسي كارايي جاذب هاي آلي و معدني اصلاح شده توسط نانو ذرات آهن صفر ظرفيتي براي حذف آلودگي از آب هاي نامتعارف
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان،دانشكده كشاورزي
صفحه شمار :
پانزده،158ص.: مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
منوچهر حيدرپور، جهانگير عابدي كوپايي
توصيفگر ها :
نيترات , سرب , كادميوم , زئوليت , ستون بستر- ثابت
تاريخ نمايه سازي :
94/1/29
استاد داور :
سعيد اسلاميان،نوراله ميرغفاري،حميد زارع ابيانه
كد ايرانداك :
ID739 دكتري
چكيده انگليسي :
Evaluation of Adsorption Efficiency of Modified Organic and Inorganic Adsorbents with Zero Valent Iron Nano Particles for Reclamation of Un conventional Water Saloome Sepehri s sepehri@ag iut ac ir College of Agriculture Department of Water Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Manoucher Heidarpour heidar@cc iut ac ir Jahangir Abedi Koupai koupai@cc iut ac ir Mohammad Saraji saraji@cc iut ac ir Isfahan University of Technology College of Agriculture Department of Water Engineering Isfahan 84156 83111 Iran Isfahan University of Technology Department of Chemistry Isfahan 84156 83111 Iran Abstract The aim of this study is the investigation of nitrate lead and cadmium removal from aqueous solution using inorganic materials hazelnut shell HS and HS activated carbon HSAC supported zero valent iron nano particles HS nZVI and HSAC nZVI and organic materials natural zeolite Ze and sand Sa supported zero valent iron nano particles Ze nZVI and Sa nZVI These novel adsorbents was synthesized by the sodium borohydride reduction method The nature and morphology of adsorbents were characterized by Scanning Electron Microscopy SEM X ray Diffraction XRD and Brunauer Emmett Teller BET N2 analysis The SEM images revealed that nZVI immobilized on Ze nZVI Sa nZVI HS nZVI and HSAC Fe0 were spherical and uniformly dispersed on the surface of the stabilizers The synthesized materials were then tested for the removal of nitrate lead and cadmium from aqueous solution Isotherm experiments indicated that the maximum adsorption capacity of Ze nZVI is higher than other adsorbents The maximum adsorption capacities of Ze nZVI for nitrate Pb II and Cd II were 113 2 131 5 and 114 6 mg g respectively Reduction of nitrate Pb II and Cd II using Ze nZVI was in accordance with the pseudo first order kinetic model Keywords Nanoscale zero valent iron particles Nitrate Lead Cadmium Sorption isotherm Kinetic modeling Introduction High nitrate concentration has become a serious common water quality problem in agricultural regions Heavy metal pollution of wastewater is a common environmental threat since the toxic metal ions dissolved can eventually reach the top of the food chain and thus become a risk factor for human health In recent years nanoscale Zero Valent Iron nZVI has been widely studied as an environmentally friendly strong reducing agent Several studies reported the efficiency of nZVI for the removal of a variety of contaminants 3 However nZVI particles expose vigorous propensity to agglomerate into larger solid particles Moreover the separation of non supported nZVI particles from the aqueous phase is still a difficult task The published results revealed that the presence of support materials leads to a decrease in the aggregation of nZVI and a corresponding increase in the Specific Surface Area SSA 3 In this study inorganic materials hazelnut shell HS and HS activated carbon HSAC supported zero valent iron nano particles HS nZVI and HSAC nZVI and organic materials natural zeolite Ze and sand Sa supported zero valent iron nano particles Ze nZVI and
استاد راهنما :
منوچهر حيدرپور، جهانگير عابدي كوپايي
استاد داور :
سعيد اسلاميان،نوراله ميرغفاري،حميد زارع ابيانه
