شماره ركورد كنفرانس :
5048
عنوان مقاله :
SYNTHESIS and CHARACTERIZATION OF A BIOPOLYMER- NANO ZEOLITE CAMPOSIT ADSORBENT FOR UPTAKE OF HEAVY METAL IONS
Author/Authors :
ALI REZA ،KHANCHI Jaber-ebne-Hayyan Laboratory , AHMAD ،TAYYEBI Department of Energy Engineering - Sharif University of Technology , AMIR ،CHARKHI Jaber-ebne-Hayyan Laboratory , FATEMEH ،GRAYELI Department of Energy Engineering - Sharif University of Technology , MOHAMMAD ،OUTOKESH Department of Energy Engineering - Sharif University of Technology
كليدواژه :
nano zeolite , alginate , heavy metals , shrinking core model
عنوان كنفرانس :
ششمين كنگره بين المللي مهندسي شيمي
چكيده لاتين :
A microspherical composite adsorbent for uptake of heavy metal ions was developed by immobilizing of nano zeolite Y
in the bio-polymeric matrix of calcium alginate. Distribution coefficient of Co2+, Pb2+, Cd2+, Ni2+, Sr2+, UO2
2+ , Th 4+, Hf
4+, Zr 4+ ions were determined for the produced microspheres; and it was found that the new adsorbent has high affinity
for adsorption of lead, uranium, strontium and hafnium. The kinetics of strontium and uranium uptake was examined by
a stirred reactor and the data were modeled using shrinking core model (SCM). The kinetics model indicated that the
rate controlling step was the slow chemical reaction of the diffused ions with the zeloite nano particles dispersed in the
alginate matrix.
