Abstract
The adsorption capability of bacterial cellulose(BC) for anionic dye acid fuchsine was studied. Meanwhile, the processes of the adsorption were investignted and fitted by adsorption isotherm models, adsorption thermodynamics and adsorption kinetics models, respectively. The changes of BC before and after adsorbing acid fuchsine were investigated via scanning electron microscopy(SEM) and Fourier transform infrared spectroscopy(FTIR) to further explain the adsorption mechanism. The results show that acid fuchsine could be effectively adsorbed by BC. The adsorption process was fitted well by Langmuir equation and the pseudo-second order kinetics, indicating that the adsorption process was monolayer molecule adsorption with the main action of chemical adsorption. The adsorption process was spontaneous and endothermic. Glucuronic acid groups and hydroxyl groups were responsible for the adsorption of acid fuchsine on BC.
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Supported by the Natural Science Foundation of Jilin Province, China(No.20101553), the Science and Technology Research Projects of the Education Department of Jilin Province, China(No.2014-477) and the 12th Five-Year Enhancing Innovation Projects of Northeast Dianli University, China(No.2013).
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Lu, M., Lü, X., Xu, X. et al. Thermodynamics and kinetics of bacterial cellulose adsorbing persistent pollutant from aqueous solutions. Chem. Res. Chin. Univ. 31, 298–302 (2015). https://doi.org/10.1007/s40242-015-4275-3
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DOI: https://doi.org/10.1007/s40242-015-4275-3