4419

4168

كارشناسي ارشد

شيمي فيزيك

اصفهان: دانشگاه صنعتي اصفهان، دانشكده شيمي

1387

دوازده ،73،[II[ص:مصور ،جدول ،نمودار

ص.ع به :فارسي و انگليسي

عزت كشاورزي ،يوسف غايب

فرهاد حداد زاده

18/1/88

بيژن نجفي ، اصغر زيني اصفهاني

1396/09/11

كتابنامه

شيمي

ID4168

به فارسي و انگليسي :قابل رويت در نسخه ديجيتال

Abstract This study is based on applying of iron nanoparticles to simultaneously removal of heavymetal ions nickel II and cobalt II which play an important role in waters pollution For thispurpose 0 03 g of iron nanoparticles was added to a solution containing cobalt and nickel cationsand then the ultrasonic waves was used to suspend the reaction minture nonparticles Ni II Co II in the solution The applied ultrasonic waves have an important role for breakingnanoclusters and enhancing the surface to volume ratio of them which leads to more removal ofnickel and cobalt ions from water by surface adsorption and reduction phenomena on the ironnanoparticles The observation show that the total of 15 20 mg L 1 and 23 27 mg L 1 of nickel andcobalt ions were removed respectively and the removal range was more than range in theprevious methods that reported for removal of heavy metals by iron nanoparticles and also thisprocedure is economical On the other hand the simultaneous presence of cobalt ions in thevicinity of nickel ions leads to enhancing the removal efficiency of nickel ions by nanoparticles toabout 27 32 mg mL 1 which is one of the interting advantages of this study Finally the removalextent of nickel and cobalt were measured by nanoparticles which were aged in water for a periodof time and the results showed that the removal efficiency was decreased to 13 18 and 10 15 mgL 1 for nickel and cobalt respectively which may be due to several forms of iron oxides

عزت كشاورزي ،يوسف غايب

فرهاد حداد زاده

بيژن نجفي ، اصغر زيني اصفهاني