پديد آورنده :
شيخ حسيني، احمدرضا
عنوان :
برهمكنش نيكل و كاني هاي پاليگورسكيت، سيپوليت و كلسيت در حضور برخي ليگاندهاي آلي
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي
صفحه شمار :
چهارده،118ص.: مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
حسين شريعتمداري، مهران شيرواني
توصيفگر ها :
جذب فلزات , جذب رقابتي , ترموديناميك
تاريخ نمايه سازي :
26/1/93
استاد داور :
محمود كلباسي، يوسف غايب، مجيد افيوني
كد ايرانداك :
ID613 دكتري
چكيده انگليسي :
Interactions of Nickel with Palygorskite Sepiolite and Calcite in the Presence of Some Organic Ligands Ahmadreza Sheikhhosseini Email address ar sheikhhosseiniesfahani@ag iut ac ir December 02 2013 Department of Soil Science Isfahan University of Technology Isfahan 84156 83111 Iran Supervisor Hossein Shariatmadari Email address shariat@cc iut ac irSupervisor Mehran Shirvani Email address shirvani@cc iut ac irAdvisor Bijan Najafi Email address najafi@cc iut ac irCollege Graduate Coordinator Mohamad Mehdi Majidi Email address majidi@cc iut ac ir Department of Soil Science College of Agriculture Isfahan University of Technology Isfahan Iran Department of Chemistry Isfahan University of Technology Isfahan Iran AbstractAs a pollutant nickel release to soil and water sources is of great concern Clayminerals and calcite are widely recommended to remove excess amounts of heavymetals form soil and water environments This study deals with assessing andcharacterizing fibrous clay minerals palygorskite and sepiolite and calcite based ontheir ability for nickel sorption and studying the effects of temperature presence ofother metals organic ligands on nickel sorption to the minerals as well Our resultsshowed that sepiolite and calcite have the greatest and lowest abilities for sorption ofnickel respectively Simultaneous presence of Cd Zn and Cu decreased sorption of Nito palygorskite and sepiolite considerably Decrease in nickel sorption to mineralsmainly caused by Cu competition Temperature had an increasing effect on sorption ofnickel to the minerals Sorption of Ni to palygorskite and sepiolite was an endothermicreaction Sorption of nickel to sepiolite was more spontaneous than to palygorskite Ourresults indicate that different ligands affect sorption of Ni to the minerals in differentways Generally citrate and DTPA decreased sorption of nickel to all minerals Contrarily arginine increased sorption of Ni to all minerals DFOB increased sorptionof Ni to calcite but decreased that to palygorskite and sepiolite Overally sepiolite couldbe a suitable option for nickel removal from water systems Key wordsOrganic ligands competitive sorption metal sorption thermodynamic
استاد راهنما :
حسين شريعتمداري، مهران شيرواني
استاد داور :
محمود كلباسي، يوسف غايب، مجيد افيوني
