Nitrate removal from water by quaternized pine bark using choline based ionic liquid analogue

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dc.contributor.author Karachalios, Antonis
dc.contributor.author Wazne, Mahmoud
dc.date.accessioned 2016-02-29T12:45:05Z
dc.date.available 2016-02-29T12:45:05Z
dc.date.copyright 2013
dc.date.issued 2016-02-29
dc.identifier.issn 0268-2575 en_US
dc.identifier.uri http://hdl.handle.net/10725/3209
dc.description.abstract BACKGROUND: The objective of this study was to quaternize pine bark (PB) wood residues using green chemistry and to use the quaternized PB to remove nitrate (NO3−) from water. The quaternization process was achieved by reacting the wood residues with an ionic liquid analogue comprised of a choline chloride derivative and urea. Batch adsorption tests were used to delineate the NO3− uptake by the modified pine bark (MPB). Fourier Transform Infrared Spectroscopy (FTIR) analysis and Zeta potential measurements were used to characterize the changes at the surface of the PB due to quaternization and NO3− uptake. RESULTS: The MPB has a maximum NO3− uptake capacity of 2.91 mmol g−1. The NO3− uptake kinetics indicated that diffusion through the boundary layer of the MPB was the rate limiting step. The Langmuir adsorption model provided a better fit for the uptake data than the Freundlich model, indicating monolayer adsorption. The uptake process was found dependent on concentration, pH and ionic strength, and was also spontaneous and exothermic. The desorption–regeneration experimental results indicated a 95% efficiency after five consecutive regeneration cycles. CONCLUSIONS: The quaternization technique was found very effective for developing effective and green anion exchange resins to remove NO3− from water. © 2012 Society of Chemical Industry en_US
dc.language.iso en en_US
dc.title Nitrate removal from water by quaternized pine bark using choline based ionic liquid analogue en_US
dc.type Article en_US
dc.description.version Published en_US
dc.author.school SOE en_US
dc.author.idnumber 201205627 en_US
dc.author.woa N/A en_US
dc.author.department Civil Engineering en_US
dc.description.embargo N/A en_US
dc.relation.journal Journal of Chemical Technology and Biotechnology en_US
dc.journal.volume 88 en_US
dc.journal.issue 4 en_US
dc.article.pages 664-671 en_US
dc.keywords Nitrate en_US
dc.keywords Biosorbent en_US
dc.keywords Adsorption en_US
dc.keywords Pine bark en_US
dc.keywords Quaternization en_US
dc.identifier.doi http://dx.doi.org/10.1002/jctb.3883 en_US
dc.identifier.ctation Karachalios, A., & Wazne, M. (2013). Nitrate removal from water by quaternized pine bark using choline based ionic liquid analogue. Journal of Chemical Technology and Biotechnology, 88(4), 664-671. en_US
dc.author.email mahmoud.wazne@lau.edu.lb

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