Abstract




 
   

IJE TRANSACTIONS B: Applications Vol. 29, No. 2 (February 2016) 170-175    Article Under Final Proof

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  ADSORPTIVE BEHAVIOR OF AN AMBERLITE ANION EXCHANGER RESIN FOR URANIUM (VI) SORPTION IN THE PRESENCE OF SULFATE ANIONS
 
M. R. Kowsari, H. Sepehrian, J. Fasihi, M. Arabieh and M. Mahani
 
( Received: December 28, 2015 – Accepted: January 26, 2016 )
 
 

Abstract    Uranium (VI) sorption using an anionic exchanger resin in the presence of sulfate anions, namely amberlite 910, was the subject of current study. Batch sorption experiments were carried out to evaluate the influence of operational parameters such as pH, contact time, initial concentration and existence of various anions (including phosphate, sulfate, chloride, fluoride, and nitrate) in the solution on amberlite 910 sorption behavior. Kinetics study revealed that the pseudo-second-order model showed better curve-fitting regression of the experimental data than the pseudo-first-order one. Freundlich isotherm was also provided well mathematical description of sorption process than the Langmuir one. It was also revealed that the existence of various anion species in the solution could strongly affect the sorption of uranium using amberlite 910 anion exchanger resin.

 

Keywords    Uranium, Amberlite 910, Anion exchanger resin, Adsorption, Anion effect.

 

چکیده    جذب یون­های اورانیوم (VI) با استفاده از یک رزین تبادلگر آنیونی، amberlite 910، در حضور آنیون های سولفات موضوع مقاله حاضر می باشد. آزمایش های جذب به صورت ناپیوسته به منظور بررسی اثر پارامترهای عملیاتی شامل pH، زمان تماس، غلظت اولیه و حضور آنیون های مختلف ( شامل فسفات، سولفات، کلرید، فلوئور و نیترات) در محلول بر روی رفتار جذبی amberlite 910 انجام شده است. مطالعه سینتیکی نشان داد که مدل شبه درجه دوم برازش منحنی رگراسیونی بهتری از داده های آزمایشی نسبت به مدل شبه درجه اول دارد. ایزوترم فروندلیچ نیز توصیف ریاضیاتی بهتری از فرآیند جذب نسبت به ایزوترم لانگمویر نشان داد. همچنین مشخص گردید که حضور گونه های مختلف آنیونی در محلول می تواند به طور زیادی فرآیند جذب یون های اورانیوم را با استفاده از رزین تبادلگر آنیونی amberlite 910 تحت تاثیر قرار دهد.

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