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http://dx.doi.org/10.7852/ijie.2013.26.1.047

Chromium(VI) Adsorption Behavior of Silk Sericin Beads  

Kwak, Hyo Won (Department of Biosystems & Biomaterials Science and Engineering, Seoul National University)
Yang, Ye Sol (Department of Biosystems & Biomaterials Science and Engineering, Seoul National University)
Kim, Moo Kon (Department of Biosystems & Biomaterials Science and Engineering, Seoul National University)
Lee, Jeong Yun (Department of Biosystems & Biomaterials Science and Engineering, Seoul National University)
Yun, Haesung (Department of Biosystems & Biomaterials Science and Engineering, Seoul National University)
Kim, Min Hwa (Department of Biosystems & Biomaterials Science and Engineering, Seoul National University)
Lee, Ki Hoon (Department of Biosystems & Biomaterials Science and Engineering, Seoul National University)
Publication Information
International Journal of Industrial Entomology and Biomaterials / v.26, no.1, 2013 , pp. 47-53 More about this Journal
Abstract
Silk sericin (SS) has been fabricated into beads using a 1 M LiCl/DMSO solvent and utilized as a heavy metal adsorbent. Among the various heavy metals, we targeted Cr(VI) for adsorption using SS beads and found that its adsorption depended on the coagulant used for the fabrication of the SS beads. When methanol was used as a coagulant, the beads had a better adsorption capacity than when ethanol was used except at pH 1. The adsorption behavior of Cr(VI) on the SS beads followed the BET isotherm. The maximum adsorption capacity was 33.76 mg/g at pH 2. The adsorption of Cr(VI) was confirmed by FT-IR and EDS analyses. Finally, the desorption was carried out using NaOH solution, and it was found that 73.19% of the adsorbed Cr(VI) could be detached.
Keywords
Silk sericin; Heavy metal adsorbent; Bioadsorption; Waste water treatment;
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Times Cited By KSCI : 3  (Citation Analysis)
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