AMINOAND MERCAPTO-SILICA HYBRID FOR Cd(lI) ADSORPTION INAQUEOUS SOLUTION Hibrida Amino-silika dan Merkapto-silika sebagai Adsorben untuk Adsorpsi Ion Cd(lI)da/am Larutan
| Main Author: | Perpustakaan UGM, i-lib |
|---|---|
| Format: | Article NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2009
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/27988/ http://i-lib.ugm.ac.id/jurnal/download.php?dataId=11051 |
Daftar Isi:
- ABSTRACT Modification of silica gel with 3-aminopropyltrimethoxysilaneand 3-mercaptopropyltrimethoxysilanethrough sol-gel technique producing amino-silica hybrid (HAS) and mercapto-silica hybrid (HMS), respectively, has been carried out using tetraethylorthosilicate (TEOS) as silica source. The ad~orbentswere characterized using infrared spectroscopy (IR), and X-ray energy dispersion spectroscopy (EDX). Adsorption of Cd(lI) individually as well as its binary mixture with Ni(II), Cu(II), and Zn(lI) in solution was performed in a batch system. Adsorption capacities of Cd(lI) ion on adsorbent of silica gel (SG), HAS, and HMS are 86.7, 256.4 and 319.5 J.lmol/gwith the adsorption energies are 24.60, 22.61 and 23.15 kJ/mol, respectively. Selectivity coefficient (a) of Cd(lI) ion toward combination of Cd(II)/Ni(II), Cd(II)/Cu(II), and Cd(II)/Zn(lI) ions on HAS adsorbent is relatively smaller than those on HMS adsorbent which has a > 1. Keywords: adsorption, amino-silica hybrid, mercapto-silica