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Research Journals >
Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.18 [2011] >
IJCT Vol.18(5) [September 2011] >
| Title: | Removal of arsenic ions and bacteriological contamination from aqueous solutions using chitosan nanospheres |
| Authors: | Singh, P
Bajpai, J
Bajpai, A K
Shrivastava, R B |
| Keywords: | Adsorbent
Antibacterial studies
Arsenic
Chistosan
Isotherms
Kinetics
Nanospheres |
| Issue Date: | Sep-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | This paper reports study on the
removal of As (V) by chitosan nanospheres following batch studies conducted as
a function of dosage, contact time and temperature. The kinetic investigation
of the removal process reveals that the uptake of As (V) ions by chitosan is
very rapid in the first 40 min and then an equilibrium adsorption is achieved
in next 20 min. The adsorption data has been applied to Langmuir and Freundlich
isotherm equations and various experimental parameters such as solid to liquid
ratio, pH, temperature and contact
time are varied to optimize the conditions for the removal of arsenic ions.
Antibacterial studies are also performed on native chitosan and silver
nanoparticles loaded chitosan nanospheres and dissolved oxygen is calculated in
water samples treated with chitosan and Ag-chitosan nanospheres. Escherichia coli is used to test the
bactericidal efficacy of synthesized Ag-chitosan nanospheres. These nanospheres
are found to have significantly higher antibacterial activity than the native
chitosan nanospheres. |
| Page(s): | 403-413 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.18(5) [September 2011]
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