Role of iron oxidation byproducts in the removal of phosphate from aqueous solution

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dc.contributor.author Wazne, Mahmoud
dc.contributor.author Sleiman, Nathalie
dc.contributor.author Deluchat, Veronique
dc.contributor.author Courtin, Alexandra
dc.contributor.author Saad, Zeinab
dc.contributor.author Kazpard, Veronique
dc.contributor.author Baudu, Michel
dc.date.accessioned 2016-06-09T10:30:32Z
dc.date.available 2016-06-09T10:30:32Z
dc.date.copyright 2015 en_US
dc.date.issued 2016-06-09
dc.identifier.issn 2046-2069 en_US
dc.identifier.uri http://hdl.handle.net/10725/3997
dc.description.abstract Zero Valent Iron (ZVI) is widely investigated in water treatment processes; the removal of contaminants may take place at the surface of ZVI or at the surface of its oxidation byproducts that have flaked off into the bulk solution. In this work, iron byproducts were synthetized under different aeration conditions (4 or 8 mg O2 per L) and aging times (40 h or 6 days). The prepared iron oxidation byproducts were characterized using Xray diffraction (XRD), Fourier transform infrared (FTIR), Raman spectroscopy, zeta potential, BET surface area, and particle size analyses. XRD analysis showed that the prepared iron oxidation byproducts were composed mostly of lepidocrocite, maghemite, and magnetite. These flaked off iron oxidation byproducts were used alone (without ZVI) to remove phosphate. Equilibrium and kinetic studies were conducted to determine the sorption capacities and the rate of phosphate ion uptake at various pH values by the prepared byproducts. The experimental data showed that phosphate sorption adhered to a pseudo second order kinetic model and the maximum sorption capacity was determined at 2.5 mg P per g. Phosphate removal capacities of synthetic pure iron oxides and oxy-hydroxides were also determined. Raman and FTIR spectroscopy showed that phosphate was retained by inner sphere complexation. en_US
dc.language.iso en en_US
dc.title Role of iron oxidation byproducts in the removal of phosphate from aqueous solution 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.department Civil Engineering en_US
dc.description.embargo N/A en_US
dc.relation.journal RSC Advances en_US
dc.journal.volume 6 en_US
dc.article.pages 1627-1636 en_US
dc.identifier.doi http://dx.doi.org/10.1039/c5ra22444f en_US
dc.identifier.ctation Sleiman, N., Deluchat, V., Wazne, M., Courtin, A., Saad, Z., Kazpard, V., & Baudu, M. (2016). Role of iron oxidation byproducts in the removal of phosphate from aqueous solution. RSC Advances, 6(2), 1627-1636. en_US
dc.author.email mahmoud.wazne@lau.edu.lb en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url http://pubs.rsc.org/en/content/articlepdf/2016/RA/C5RA22444F en_US

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