Dissertation/ Thesis
Improvement of oxidative regeneration of activated carbon by transition metal addition (Catalytic Wet Air Oxidation and H2O2 promoted CWAO) ; Amélioration par ajout d’un métal de transition de la régénération in situ d’un charbon actif par oxydation catalytique
| العنوان: | Improvement of oxidative regeneration of activated carbon by transition metal addition (Catalytic Wet Air Oxidation and H2O2 promoted CWAO) ; Amélioration par ajout d’un métal de transition de la régénération in situ d’un charbon actif par oxydation catalytique |
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| المؤلفون: | Benhamed, Imane |
| المساهمون: | Laboratoire de Génie Chimique (LGC), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Institut National Polytechnique de Toulouse - INPT, Université des Sciences et de la Technologie d'Oran Mohamed-Boudiaf (Algérie), Henri Delmas, Carine Julcour-Lebigue |
| المصدر: | https://theses.hal.science/tel-04233323 ; Génie des procédés. Institut National Polytechnique de Toulouse - INPT; Université des Sciences et de la Technologie d'Oran Mohamed-Boudiaf (Algérie), 2015. Français. ⟨NNT : 2015INPT0037⟩. |
| بيانات النشر: | HAL CCSD |
| سنة النشر: | 2015 |
| المجموعة: | Université Toulouse III - Paul Sabatier: HAL-UPS |
| مصطلحات موضوعية: | Activated carbon, Regeneration, Transition metals, Catalysis, Cwao, H2o2, Phenol, Adsorption-Oxidation process, Charbon actif, Régénération, Métal de transition, Oxydation catalytique en voie humide, Phénol, Le procédé Adsorption-Oxydation, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering |
| الوصف: | Due to increasingly severe regulation on water pollution, waste water treatments are more and more concerned with chemical oxidation (CWAO and AOP) and hybrid adsorption/oxidative regeneration processes to remove refractory pollutants. The objective of this work is to investigate the effect of iron or copper addition on Activated Carbon (AC) activity in standard and peroxide-promoted CWAO, as well as on its lifetime as adsorbent/catalyst in the sequential Adsorption-Oxidation process (ADOX). The catalysts (Fe/AC and Cu/AC, respectively) were prepared by incipient-wetness impregnation of a commercial activated carbon (5% by weight) with a precursor solution containing the metal salt (iron nitrate or copper nitrate). After drying overnight at 110°C, they were calcinated at 350°C for 4h under nitrogen flow. The successive adsorption-oxidation cycles were performed using a small fixed bed reactor containing about 7 g of AC. During the adsorption step, the reactor was continuously fed with a 0.5 g/L phenol solution until complete bed saturation. The adsorption capacity of the AC was calculated from the breakthrough curves of phenol adsorption. The batch oxidation step (50 bar, 150°C) lasted 8h. For peroxide promoted CWAO, a low dose of H2O2 (20% of the stoichiometric amount required for phenol mineralization) was added to the recycled phenol solution. Phenol conversion was monitored by HPLC/UV and the extent of mineralization by Chemical Oxygen Demand (COD) or Total Organic Carbon (TOC). The addition of metal (copper or iron) showed a slight beneficial effect on AC regeneration by CWAO, but not as high as expected from the final BET area of the solids. Peroxide promoted CWAO clearly improved AC regeneration, nevertheless its effect was not additive with that of the metals. ; En raison de la réglementation plus sévère sur la pollution de l’eau, l’oxydation chimique (CWAO et AOP) et l’hybridation adsorption / régénération par oxydation sont de plus en plus envisagées pour éliminer les polluants réfractaires. L’objectif ... |
| نوع الوثيقة: | doctoral or postdoctoral thesis |
| اللغة: | French |
| Relation: | NNT: 2015INPT0037; tel-04233323; https://theses.hal.science/tel-04233323; https://theses.hal.science/tel-04233323/document; https://theses.hal.science/tel-04233323/file/BENHAMED_Imane2.pdf |
| الاتاحة: | https://theses.hal.science/tel-04233323 https://theses.hal.science/tel-04233323/document https://theses.hal.science/tel-04233323/file/BENHAMED_Imane2.pdf |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.39A5BF82 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |