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dc.contributor.author Ballav, N
dc.contributor.author Maity, A
dc.contributor.author Mishra, SB
dc.date.accessioned 2013-04-17T09:59:48Z
dc.date.available 2013-04-17T09:59:48Z
dc.date.issued 2012-08
dc.identifier.citation Ballav, 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 536–546 en_US
dc.identifier.issn 1385-8947
dc.identifier.uri http://www.sciencedirect.com/science/article/pii/S1385894712007000
dc.identifier.uri http://hdl.handle.net/10204/6660
dc.description Copyright: 2012 Elsevier. This is an ABSTRACT ONLY. The definitive version is published in Chemical Engineering Journal, vol. 198-199, pp 536–546 en_US
dc.description.abstract 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. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Workflow;10033
dc.subject Hexavalent chromium en_US
dc.subject Kinetics en_US
dc.subject Polypyrrole en_US
dc.subject Glycine doped polypyrrole en_US
dc.subject Equilibrium en_US
dc.title High efficient removal of chromium (VI) using glycine doped polypyrrole adsorbent from aqueous solution en_US
dc.type Article en_US


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