Publication: Adsorption of Silver (I) from Aqueous Solution Using Chitosan/Montmorillonite Composite Beads
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Issued Date
2016
Resource Type
File Type
application/pdf
ISSN
15161439
Other identifier(s)
2-s2.0-84989820028
Rights Holder(s)
Scopus
Bibliographic Citation
Materials Research. Vol 19, No.5 (2016), p.1114-1121
Suggested Citation
Jintakosol T., Nitayaphat W. Adsorption of Silver (I) from Aqueous Solution Using Chitosan/Montmorillonite Composite Beads. Materials Research. Vol 19, No.5 (2016), p.1114-1121. doi:10.1590/1980-5373-MR-2015-0738 Retrieved from: https://hdl.handle.net/20.500.14740/5185
Author(s)
Abstract
Chitosan/montmorillonite (CTS-MMT) composite beads were used as adsorbents for the removal of silver ion (Ag+) from aqueous solution. Equilibrium adsorption was achieved within 150 min at 3% MMT of chitosan solution. The optimum pH value for Ag+ removal was found to be 6-7. The maximum adsorbent dosage for Ag+ removal was 5 g/L. Under above maximum conditions the Ag+ removal was 95.7%. The maximum adsorption capacities of CTS and CTS-MMT composite beads as obtained from Langmuir isotherm were found to be 38.46 and 43.48 mg/g, respectively. The adsorption kinetic agrees well with the pseudo second order model. The Ag+ desorption of CTS-MMT composite bead was 17.39% at pH=4. SEM/EDX images confirm that after adsorption the Ag+ were dispersed onto the composite bead surface. The adsorption and desorption experiment demonstrated that the CTS-MMT composite beads can be used as an effective adsorbents for removal of Ag+ from aqueous solution.