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In relation to this article, we declare that there is no conflict of interest.
Publication history
Received July 1, 2014
Accepted December 8, 2014
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Properties of chitosan/magnetite nanoparticles composites for efficient dye adsorption and antibacterial agent

1School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk 712-749, Korea 2Department of Energy and Materials Engineering, Dongguk University, Seoul 100-715, Korea 3, Korea 4BAM Federal Institute for Materials Research and Testing, Richard-Willstätter-Str. 11, D-12489 Berlin, Germany
Korean Journal of Chemical Engineering, August 2015, 32(8), 1688-1693(6), 10.1007/s11814-014-0368-9
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Abstract

Chitosan (CS)/iron oxide (Fe3O4) composites were prepared using a chemical precipitation method. The CS/Fe3O4 composite was characterized by Fourier-transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy, and zeta-potential measurements. The composite was used to remove methyl orange (MO) dye from an aqueous solution. The factors affecting the adsorption capacity, such as adsorption time, absorbent dosage and solution pH were investigated. The results suggested that the composite was an effective adsorbent for the removal of MO dye from its aqueous solution. Kinetics studies showed that the adsorption process was consistent with a pseudo-second-order model. The adsorbent efficiency was unaltered, even after five cycles of reuse, and the adsorbent could be recollected easily using a magnet. In addition, the composite exhibited a superior antibacterial efficacy against Escherichia coli; 82% within 24 h, as measured by the colony forming units.

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