شماره ركورد كنفرانس :
4887
عنوان مقاله :
Thermodynamic study for adsorption of copper ions onto modified Hematite nanoparticles
پديدآورندگان :
Fallah Talooki Elahe M.Sc. Student of Babol Noshirvani University of Technology , Jamal Livani Milad M.Sc. Student of Babol Noshirvani University of Technology , Ghoreyshi Ali Asghar Faculty of Chemical Engineering, Babol Noshirvani University of Technology , Ghorbani Mohsen Faculty of Chemical Engineering, Babol Noshirvani University of Technology
كليدواژه :
Hematite , α , Fe2O3 , Nanoparticles , Adsorption , Thermodynamic , Copper.
عنوان كنفرانس :
پانزدهمين كنگره ملي مهندسي شيمي ايران
چكيده فارسي :
Magnetic hematite (α-Fe2O3) nanoparticles prepared by sol-gel synthesis route using FeCl3, NaOH as reagents. Because of the strong interparticle forces that exist between hematite nanoparticles they tend to agglomerate. In order to reduce agglomeration amount hematite nanoparticles were loaded on the surface of polymeric carrier. Polystyrene was choiced as the polymeric carrier due to its tunable size and its easy synthesis. The modification process was carried out via chemical polymerazion in the presence of St (styrene) as the monomer, ammoniumPeroxodisulfate (APS) and Poly vinyl pyrrolidone (PVP) as the initiator and a stabilizer respectively. The prepared novel adsorbent was applied for efficient removal of copper ions from aqueous solution. Thermodynamic studies have done to take useful information about the feasibility and the spontaneous nature of the removal process with modified hematite nanparticles. The thermodynamic studies showed the spontaneity and exothermic nature of the removal process, with negative entropy witch shows the less randomness in the operating system
