Phosphate removal from aqueous solution using ZVI/sand bed reactor: Behavior and mechanism
| العنوان: | Phosphate removal from aqueous solution using ZVI/sand bed reactor: Behavior and mechanism |
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| المؤلفون: | Véronique Kazpard, Michel Baudu, Nathalie Sleiman, Véronique Deluchat, Alexandra Courtin-Nomade, Martine Mallet, Mahmoud Wazne |
| المساهمون: | Groupement de Recherche Eau, Sol, Environnement (GRESE), Université de Limoges (UNILIM), Lebanese University [Beirut] (LU), Lebanese American University (LAU), Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), HydrASA (Hydrogéologie, argiles, sols et altérations), Université de Poitiers-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | Water Research Water Research, IWA Publishing, 2016, 99, pp.56-65. ⟨10.1016/j.watres.2016.04.054⟩ |
| بيانات النشر: | Elsevier BV, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Environmental Engineering, Iron, Inorganic chemistry, Maghemite, 02 engineering and technology, 010501 environmental sciences, engineering.material, 01 natural sciences, Phosphates, Zero valent iron, chemistry.chemical_compound, Column experiments, [CHIM]Chemical Sciences, Preconditioning effect, Iron phosphate, Lepidocrocite, Waste Management and Disposal, 0105 earth and related environmental sciences, Water Science and Technology, Civil and Structural Engineering, Zerovalent iron, Aqueous solution, Chemistry, Ecological Modeling, Sorption, Silicon Dioxide, Sorption distribution, 021001 nanoscience & nanotechnology, Phosphate, Pollution, 6. Clean water, Phosphate removal, Chemical engineering, engineering, 0210 nano-technology, Saturation (chemistry), Oxidation-Reduction, Water Pollutants, Chemical |
| الوصف: | International audience; 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. |
| تدمد: | 0043-1354 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd87cd09d2e765898203e0872b9ac275 https://doi.org/10.1016/j.watres.2016.04.054 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....fd87cd09d2e765898203e0872b9ac275 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00431354 |
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