شماره ركورد كنفرانس :
5041
عنوان مقاله :
Removal of U(VI), Ni(II) and Cd(II) ions from aqueous solutions using amidoximated modified calcium alginate beads with and without entrapped functionalized SiO2 nanoparticles
Author/Authors :
P. Khajavi Fouman faculty of engineering - College of engineering - University of Tehran, Tehran, Iran , A. Keshtkar Materials and Nuclear Fuel Research School - Nuclear Science and Technology Research Institute (NSTRI), Tehran, Iran , M. Moosavian Department of Chemical Engineering - Faculty of Engineering - University of Tehran, Tehran, Iran
كليدواژه :
adsorption , heavy metals , alginate , amidoxime , SiO2 , TMPTMS
عنوان كنفرانس :
The 10th International Chemical Engineering Congress & Exhibition (IChEC 2018)
چكيده فارسي :
فاقد چكيده فارسي
چكيده لاتين :
The present investigation highlights the effectiveness of amidoximated modified calcium alginate beads with and without entrapped functionalized SiO2 nanoparticles for adsorption of U(VI), Ni(II) and Cd(II) from aqueous solutions. For preparation of the adsorbent, SiO2 nanoparticles were modified by 3-mercaptopropyltrimethoxysilane (TMPTMS) and then applied to prepare the beads. Adsorption capacities for U(VI), Ni(II) and Cd(II) were 20, 67 and 70 mg/g, respectively by amidoximated modified calcium alginate beads. Also, the adsorption capacities of these metal ions were 39, 89 and 84 mg/g, respectively by amidoximated modified calcium alginate beads with entrapped functionalized SiO2 nanoparticles. According to these results, the amidoximated modified calcium alginate beads with entrapped functionalized SiO2 nanoparticles exhibited a clear increase in adsorption capacity of all ions. The adsorption capacity of all ions was studied with a pH 4, initial concentration 120 mg/l, adsorbent dosage 1 g/l and temperature 25 oC.
