Phosphate removal from aqueous solution using ZVI/sand bed reactor

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dc.contributor.author Wazne, Mahmoud
dc.contributor.author Sleiman, Nathalie
dc.contributor.author Deluchat, Veronique
dc.contributor.author Mallet, Martine
dc.contributor.author Courtin-Nomade, Alexandra
dc.contributor.author Kazpard, Veronique
dc.date.accessioned 2016-06-09T11:08:22Z
dc.date.available 2016-06-09T11:08:22Z
dc.date.copyright 2016 en_US
dc.date.issued 2016-06-09
dc.identifier.issn 0043-1354 en_US
dc.identifier.uri http://hdl.handle.net/10725/4000
dc.description.abstract This research reports on phosphate removal from aqueous solution using ZVI/sand packed columns. The influence of column preconditioning, consisting of ZVI pre-oxidation before feeding the columns with phosphate solution, revealed that a column aged for 1 day was more efficient than un-conditioned column, 5-days and 10-days preconditioned columns. The distribution of phosphate trapped inside the columns was evaluated by measuring phosphate concentration in the solids at different levels (P1, P2 and P3) along the depth of the columns. The distribution of phosphate inside the columns was determined for a time period up to 46 days, corresponding to column saturation. Results showed heterogeneous trapping along the column before saturation and homogeneous distribution upon saturation. The maximum cumulative trapped phosphate after column dismantling was determined before saturation (after 17 days running) at 130, 68 and 31 mgP/gFe at the inlet-P1, P1-P2 and P2-P3 layers, respectively, whereas the homogeneous distribution of phosphate upon saturation was determined at 132 mgP/gFe throughout the column. Solid supports were characterized using SEM, XRD and XPS. Lepidocrocite and maghemite/magnetite were the only iron oxidation products identified at the different layers inside the columns. XPS results confirmed the sorption of phosphate at the surface of ZVI and its oxidation products and highlighted the formation of an iron phosphate complex. en_US
dc.language.iso en en_US
dc.title Phosphate removal from aqueous solution using ZVI/sand bed reactor en_US
dc.type Article en_US
dc.description.version Published en_US
dc.title.subtitle behavior and mechanism 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 Water Research en_US
dc.journal.volume 99 en_US
dc.article.pages 56-65 en_US
dc.keywords Phosphate removal en_US
dc.keywords Zero valent iron en_US
dc.keywords Column experiments en_US
dc.keywords Sorption distribution en_US
dc.keywords Preconditioning effect en_US
dc.identifier.doi http://dx.doi.org/10.1016/j.watres.2016.04.054 en_US
dc.identifier.ctation Sleiman, N., Deluchat, V., Wazne, M., Mallet, M., Courtin-Nomade, A., Kazpard, V., & Baudu, M. (2016). Phosphate removal from aqueous solution using ZVI/sand bed reactor: Behavior and mechanism. Water research, 99, 56-65. 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://www.sciencedirect.com/science/article/pii/S0043135416302512 en_US

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