شماره ركورد كنفرانس :
4865
عنوان مقاله :
Isotherm and Kinetic Studies of the Bi(III) Extraction from Hydrochloric Acid Media by a Polymer Inclusion Membrane Containing Trioctylamine
پديدآورندگان :
Ghaderia N narges_ghaderi@znu.ac.ir The University of Zanjan , Dolatyarib D leiladolatyari@yahoo.com The University of Zanjan , . Kazemia D d.kazemi.ch@znu.ac.ir The University of Zanjan , Yaftiana M. R. yaftian@znu.ac.ir The University of Zanjan , Shayani Jama H shayan@znu.ac.ir The University of Zanjan
كليدواژه :
Bi(III) , Extraction , Isotherm , Kinetic , Polymer Inclusion Membrane
عنوان كنفرانس :
بيست و دومين كنفرانس ملي شيمي فيزيك ايران
چكيده فارسي :
Polymer inclusion membranes (PIMs) containing cellulose triacetate (CTA) as the polymer matrix, trioctylamine (TOA) as extractant, and tributhyl phosphate (TBP) as the plasticizer were fabricated and characterized. The prepared membrane was used for the extraction of Bi(III) from hydrochloric acid medium. The optimized PIM composition was CTA (40%w/w), TOA (25% w/w) and TBP (35% w/w). Sorption isotherm experiments were carried out and modeling of the data was realized by applying the Langmuir, Freundlich, and Dubinin Radushkevich (D-R) isotherm models. The sorption kinetic was well described by the pseudo-second order model. The kinetic and isotherm experiments confirm that the extraction process of Bi(III) into the optimal CAT/TOA/TBP PIM is a chemisorption process.
