Ballav, NMaity, ArjunMishra, SB2013-04-172013-04-172012-08Ballav, N, Maity, A and Mishra, S.B. 2012. High efficient removal of chromium (VI) using glycine doped polypyrrole adsorbent from aqueous solution. Chemical Engineering Journal, vol. 198-199, pp 536–5461385-8947http://www.sciencedirect.com/science/article/pii/S1385894712007000http://hdl.handle.net/10204/6660Copyright: 2012 Elsevier. This is an ABSTRACT ONLY. The definitive version is published in Chemical Engineering Journal, vol. 198-199, pp 536–546Glycine doped polypyrrole (PPy-gly) adsorbent was prepared via in situ polymerization of pyrrole (Py) monomer in the presence of glycine (gly) for the removal of Cr(VI). Formation of PPy homopolymer and inclusion of gly in the PPy matrix were confirmed by ATR-FTIR and XRD, respectively. Field emission scanning electron microscopic imaging of PPy-gly revealed the formation of nearly spherical agglomerated particles. The adsorption of Cr(VI) onto the PPy-gly adsorbent was highly pH dependent and removal efficiency by PPy-gly was much higher compared to PPy homopolymer. The kinetic process followed pseudo-second-order rate model with equilibrium reached within 30–150 min. Intra-particle diffusion model was also applied for better understanding of kinetic mechanism. Isotherm data fitted well with the Langmuir isotherm model with maximum adsorption capacity of 217.39–232.55 mg/g at 25–45 °C. Desorption experiment showed PPy-gly can be regenerated and reused for three consecutive cycles without loss of its removal efficiency. The adsorption process for the removal of Cr(VI) was governed by the ionic interaction between protonated amine groups of gly and ions.enHexavalent chromiumKineticsPolypyrroleGlycine doped polypyrroleEquilibriumArticleBallav, N., Maity, A., & Mishra, S. (2012). High efficient removal of chromium (VI) using glycine doped polypyrrole adsorbent from aqueous solution. http://hdl.handle.net/10204/6660Ballav, N, Arjun Maity, and SB Mishra "High efficient removal of chromium (VI) using glycine doped polypyrrole adsorbent from aqueous solution." (2012) http://hdl.handle.net/10204/6660Ballav N, Maity A, Mishra S. High efficient removal of chromium (VI) using glycine doped polypyrrole adsorbent from aqueous solution. 2012; http://hdl.handle.net/10204/6660.TY - Article AU - Ballav, N AU - Maity, Arjun AU - Mishra, SB AB - Glycine doped polypyrrole (PPy-gly) adsorbent was prepared via in situ polymerization of pyrrole (Py) monomer in the presence of glycine (gly) for the removal of Cr(VI). Formation of PPy homopolymer and inclusion of gly in the PPy matrix were confirmed by ATR-FTIR and XRD, respectively. Field emission scanning electron microscopic imaging of PPy-gly revealed the formation of nearly spherical agglomerated particles. The adsorption of Cr(VI) onto the PPy-gly adsorbent was highly pH dependent and removal efficiency by PPy-gly was much higher compared to PPy homopolymer. The kinetic process followed pseudo-second-order rate model with equilibrium reached within 30–150 min. Intra-particle diffusion model was also applied for better understanding of kinetic mechanism. Isotherm data fitted well with the Langmuir isotherm model with maximum adsorption capacity of 217.39–232.55 mg/g at 25–45 °C. Desorption experiment showed PPy-gly can be regenerated and reused for three consecutive cycles without loss of its removal efficiency. The adsorption process for the removal of Cr(VI) was governed by the ionic interaction between protonated amine groups of gly and ions. DA - 2012-08 DB - ResearchSpace DP - CSIR KW - Hexavalent chromium KW - Kinetics KW - Polypyrrole KW - Glycine doped polypyrrole KW - Equilibrium LK - https://researchspace.csir.co.za PY - 2012 SM - 1385-8947 T1 - High efficient removal of chromium (VI) using glycine doped polypyrrole adsorbent from aqueous solution TI - High efficient removal of chromium (VI) using glycine doped polypyrrole adsorbent from aqueous solution UR - http://hdl.handle.net/10204/6660 ER -