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|Title:||Competitive adsorption of Reactive Orange 16 and Reactive Brilliant Blue R on polyaniline/bacterial extracellular polysaccharides composite-A novel eco-friendly polymer|
Extra cellular polymeric substances
|Source:||Janaki, V., Vijayaraghavan, K., Ramasamy, A.K., Lee, K.-J., Oh, B.-T., Kamala-Kannan, S. (2012-11-30). Competitive adsorption of Reactive Orange 16 and Reactive Brilliant Blue R on polyaniline/bacterial extracellular polysaccharides composite-A novel eco-friendly polymer. Journal of Hazardous Materials 241-242 : 110-117. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jhazmat.2012.09.019|
|Abstract:||The performance of polyaniline/extracellular polymeric substances (Pn/EPS) composite as an adsorbent to remove the anionic reactive dyes, Reactive Brilliant Blue R (RBBR) and Reactive Orange 16 (RO), was investigated in single and binary systems. The pHpzc of Pn/EPS composite was calculated as 3.7 through potentiometric mass titration method. Electrostatic interaction between the dye anion and the nitrogen present in the polymer was identified as a major mechanism in adsorption process. Single component isotherms followed the Langmuir model with the maximum adsorption capacity of 0.5775mmolg-1 for RBBR and 0.4748mmolg-1 for RO. In binary system, both the reactive dye anions compete with each other and resulted in lower uptake. Binary adsorption data were interpreted well by the Sheindorf-Rehbun-Sheintuch equation as compared to extended Langmuir model with constant interaction factor. Kinetic analysis of single solute followed pseudo-first order model. Thermodynamic studies computed that RBBR and RO adsorption was endothermic, spontaneous, and feasible process. © 2012 Elsevier B.V.|
|Source Title:||Journal of Hazardous Materials|
|Appears in Collections:||Staff Publications|
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