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- E-ISSN 2288-8985
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- P-ISSN1225-0163
- E-ISSN2288-8985
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Study on Adsorption and Recovery of Heavy Metal Ions, Cd(Ⅱ), and Pb(Ⅱ),by Chitin
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2002, v.15 no.2, pp.163-171
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(2002). Study on Adsorption and Recovery of Heavy Metal Ions, Cd(Ⅱ), and Pb(Ⅱ),by Chitin. Analytical Science and Technology, 15(2), 163-171.
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Abstract
The adsorption characteristics of Cd(II) and Pb(II) ions has been studied by using chitin as an adsorbent. The pure chitin was obtained from the extraction of red-crab shell dumped by fish factory. Adsorption kinetics of Cd(II) and Pb(II) ions on the chitin reached at the maximum adsorption within two minutes. Adsorbed amounts of heavy metals were pH 7.0>10.5>3.5 in the following order. Adsorption ratio by chitin was 21<TEX>${\sim}$</TEX>99% for Cd(II) ion and 24<TEX>${\sim}$</TEX>95% for Pb(II) ion. Recovery ratio of Cd(II) ion on the chitin was 22<TEX>${\sim}$</TEX>53%, and that of Pb(II) ion was 22<TEX>${\sim}$</TEX>73%. The adsorption behavior of these heavy metals was explained well by Freundlich adsorption isotherm.
- keywords
- chitin, adsorption, recovery, heavy metal, batch method
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