Letteratura scientifica selezionata sul tema "Eau – Pollution par les composés organiques – Décontamination"
Cita una fonte nei formati APA, MLA, Chicago, Harvard e in molti altri stili
Consulta la lista di attuali articoli, libri, tesi, atti di convegni e altre fonti scientifiche attinenti al tema "Eau – Pollution par les composés organiques – Décontamination".
Accanto a ogni fonte nell'elenco di riferimenti c'è un pulsante "Aggiungi alla bibliografia". Premilo e genereremo automaticamente la citazione bibliografica dell'opera scelta nello stile citazionale di cui hai bisogno: APA, MLA, Harvard, Chicago, Vancouver ecc.
Puoi anche scaricare il testo completo della pubblicazione scientifica nel formato .pdf e leggere online l'abstract (il sommario) dell'opera se è presente nei metadati.
Articoli di riviste sul tema "Eau – Pollution par les composés organiques – Décontamination":
Rudelle, D., S. Cassard, P. Hartemann, J. F. Muller, T. Français e M. Morlot. "Interactions eau-matières plastiques souples : identification des composés organiques par couplage Chromatographie en phase gazeuse-spectométrie de masse". Journal européen d’hydrologie 26, n. 2 (1995): 211–25. http://dx.doi.org/10.1051/water/19952602211.
Jellali, Salah, e Olivier Razakarisoa. "Transport avec échange gazeux du trichloroéthylène vers une nappe aquifère". Revue des sciences de l'eau 19, n. 1 (20 marzo 2006): 33–45. http://dx.doi.org/10.7202/012595ar.
Tesi sul tema "Eau – Pollution par les composés organiques – Décontamination":
Boudesocque, Nicolas. "Contribution à l’étude de plasmas d'arc immergé : applications à la décontamination et à la gazéification d'effluents organiques aqueux". Limoges, 2007. https://aurore.unilim.fr/theses/nxfile/default/5122869a-8d09-4e6d-8df6-8876ecc89e2c/blobholder:0/2007LIMO4041.pdf.
This work is concemed with decontamination and gasification of aqueous organic liquid waste by immersed thermal plasma technology. Ln this concept, the organic compounds are decomposed into gas by high temperature plasma. A quench of about 107-108 K/s, is obtained by immersion into a given effluent. Two kinds of arc plasma are studied. The first one is an immersed electrical arc stricken between two graphite electrodes. The second one is a plasma jet generated by a non- transferred plasma torch. For dilute liquid waste (1g/L) containing molecules incompatible with conventional biological processes, the hydroxyl radicals (OH˚) are continuously produced by the plasma jet directly into the solution allowing complete molecule mineralization into carbon dioxide and water. The heteroatoms, if present, are converted into solvated ions. The decomposition of the molecules, such as chlorophenols and aniline, are studied. Considering the identified intermediate products, a reaction mechanism is proposed. For each tested molecules, their concentration decreased at least of 90 percent. Based on the "gasosiphon" phenomenon, the experimental reactor insures the simultaneous recirculation of both gas and liquid phases. The hydrodynamic was studied using in situ high frequency imaging technology. A CFD code was applied for numerical simulation of the observed recirculation phenomena. The results were compared with obtained experimental data. Ln the case of concentrated liquid waste (> 100 g/L), syngas was produced by thermal cracking of organic molecules. The best measured composition of the gas is about 45% v/v of H2 and 45 % v/v of CO when an electrical arc is used. The usability of both studied plasma types were investigated in this field. The experimental study was carried on using fructose and glucose solution (severnl hundreds g/L) as surrogated effluent. With a specific injection method, gasification rate is about 30 % with one way. Optical Emission Spectroscopy and high frequency imaging were applied to investigate the immersed electrical arc. The thermal plasma gasification is investigated through a" process engineering" approach. To this aim, factorial test plan was built and done. Trials with liquid waste from olive oil and paper industries complete this work
Bakhtiar, Amina. "Elaboration de photocatalyseurs à base d'argile pour la décontamination des polluants organiques en solution aqueuse". Electronic Thesis or Diss., Université de Lille (2022-....), 2022. http://www.theses.fr/2022ULILR054.
A clay-based TiO2 nanocomposite material was synthesized by a facile method to investigate its structure and photocatalytic efficiency. The supported TiO2 nanoparticles were generated from a sol-gel method, and subsequently, mixed with a suspension of sepiolite. The material was recovered in powder form (Mc-80), and then calcined to properly arrange the crystal lattice of the TiO2 particles for use in heterogeneous photocatalysis (Mc-80-500). The powder X-ray diffractogram of Mc-80-500 reveals a dispersion of anatase and rutile phase TiO2 particles on the clay surface, exhibiting a size in the order of 4-8 nm. TEM images of Mc-80-500 confirmed the presence of isolated TiO2 beads on the surface of the fibrous sepiolite. The specific surface area of Mc-80-500 is larger than that of raw sepiolite and that of free TiO2 nanoparticles.Mc-80-500 was found to be more efficient in heterogeneous photocatalysis compared to other TiO2 materials based on sepiolite. A total depollution of a reactive dye (Orange G) was achieved after 1h irradiation time, which is relatively quick compared to previous reports. The photocatalyst material can be washed with distilled water without chemical additives or calcination, and can be reused several times for photocatalysis without loss of efficiency.Keywords: nanoparticles, photocatalysis, sol-gel, sepiolite, titanium dioxide
Boudouch, Otmane. "Étude de la dépollution des sols par extraction sous pression réduite : application au traitement des COV". Lyon, INSA, 2009. http://theses.insa-lyon.fr/publication/2009ISAL0107/these.pdf.
Soil Vapour Extraction (SVE), which includes gas extraction and/or gas injection, is the primary method used to remove volatile organic compounds (VOCs) from unsaturated subsurface porous media. The widespread use of SVE is due to its above ground simplicity of operation and proven ability to remove contaminant mass inexpensively relative to competing technologies. The objectives of this study may be summarized as follow: - Characterisation of the more appropriate method to determine horizontal and vertical soil air permeability components. - Study of the evolution of soil air permeability as a function of liquids saturation degree. - Verification of the validity or not of the use of unidirectional columns in extraction systems design based on attainment of a critical pore-gas velocity. To accomplish these objectives, a laboratory pilot was designed and realised, a series of experimental tests was conducted and literature models have been used. Results showed that the more appropriate method to determine soil air permeability is the one which involve stationary state in an open soil and that results obtained with a unidirectional column related to critical air velocity can not be extrapolated to field scale as it's currently done
Renauld, Vivien. "Etude de la désorption de terres polluées par des composés organiques sur un pilote semi-industriel en continu : modélisation du transfert de polluants dans une particule de sol". Mulhouse, 2000. http://www.theses.fr/2000MULH0630.
Risoul, Véronique. "Etude, à l'échelle du laboratoire, de l'influence de la pression sur la décontamination thermique de sols pollués par des molécules organiques : étude particuliere des hydrocarbures aromatiques polycycliques". Mulhouse, 1998. http://www.theses.fr/1998MULH0541.
Bonazebi, Antoine. "Extraction des composés de métaux lourds contenus dans la jarosite décomposée par des déchets organiques". Vandoeuvre-les-Nancy, INPL, 1998. http://www.theses.fr/1998INPL059N.
Dutheil, Camille. "Dépollution des sols par extraction sous pression réduite : étude de quelques paramètres". Lyon, INSA, 2003. http://theses.insa-lyon.fr/publication/2003ISAL0016/these.pdf.
Soil vapour extraction is a treatment process for soils polluted by volatil organic compounds. Its principle relies on the circulation of gaseous flow in soil by the application of a depression of some hundreds millibars. A parametrical study has been led on a soil artificially polluted by trichlorethene. It shows that the gaseous flow rate has a slight influence on pollutants extraction yield. This is due to rate limited mass transfer processes. Soil moisture plays a negative role on treatment efficiency because of the reduction of the porosity available for the gas circulation. Tests have been performed on a soil polluted by a complex mixture of organic pollutants to elaborate a methodology of technical feasibility assessment. This methodology aims at identifying and limiting risks of site rehabilitation failure. Tests results show that soil vapour extraction was inadequat to treat the soil tested in this study because of the strong affinity between a dense organic phase (grease) and chlorinated solvents
Hanna, Khalil. "Etude de faisabilité de l'utilisation de molécules "cage" dans la dépollution des sols : solubilisation et extraction de polluants organiques par les cyclodextrines". Lyon, INSA, 2004. http://theses.insa-lyon.fr/publication/2004ISAL0070/these.pdf.
Soil matrices contaminated with polycyclic aromatic hydrocarbons (PAHs) abound at the sites of coke-oven gas plants, refineries, and many other major chemical industries. The problem of soil pollution has been widely recognised in recent years. The removal of PAHs from soil using pure water, via soil washing, is quite ineffective due to their low solubility and hydrophobicity. However, addition of cyclodextrin (CD) has been shown to increase the removal efficiency several fold. Herein are investigated the effectiveness of cyclodextrin to solubilise and to remove PAH occurring in industrially contaminated soil. The interactions in the cyclodextrin/pollutant/soil system have been studied “step by step”. The objective was to use a CD solution for soil flushing in column test in lab and to evaluate the influencing parameters that can significantly increase the removal efficiency. The process parameters chosen were CD concentration, ratio of washing solution volume to soil weight, and temperature of washing solution. These parameters were found to have a significant effect on PAH removal from the contaminated soil except the temperature where no significant enhancement in PAH extraction was observed for temperature range from 5 to 35 °C. Column experiments were also carried out to study the kinetics of PAH release from an aged-contaminated soil using three types of CD. The extraction results indicate that removal capacity of HPCD and MCD was higher than that of BCD. With 10% MCD solution, an extraction of about 40% of Phenanthrene on soil was observed, whereas only 0. 2% was removed when water was used as the flushing solution
Couffin, Nathalie. "Elimination de composes organohalogenes volatils a l'etat de traces dans l'eau par distillation membranaire sous vide". Toulouse, INSA, 2000. http://www.theses.fr/2000ISAT0007.
Zou, Xiaoqin. "Etude de la sélectivité moléculaire des membranes à base de matériaux poreux". Caen, 2012. http://www.theses.fr/2012CAEN2012.
Zeolitic membranes, films and composites with regular pore systems are attractive for a wide range of applications including gas/liquid separation, chemical sensors, catalytic membrane reactors, and light-harvesting materials. In this study, detection, removal or reduction of pollutants from liquid and gas media using porous materials (zeolites and MOFs) assembled in films and membranes are presented. As-prepared ZSM-5 membrane by secondary growth and LTL-hemp composite by in-situ crystallization are used to remove toxic heavy metals and aromatics contaminants from aqueous solutions. Design of new materials and development of facile and efficient processes for fuel gas or vapour separations are presented. In addition to pure silica MFI membrane (Silicalite-1) applied for extraction of ethanol from aqueous solution, the focus was on the preparation of MOF [Co3(HCOO)6] membranes via secondary growth approach, and further evaluation for the upgrading of natural gas by binary gas permeation of CO2/CH4. The porous materials (zeolites and MOFs) are also used as selective and high sensitive films for detection of air pollutants. MOF films composed of Y(BTC) nanocrystals are fabricated and apply for sensing of volatile organic compounds (VOCs), such as chloroform, acetone and 2-ethylthiophene. Besides, zeolites and MOF thin films loaded with metals are prepared and used for detection of CO with low concentration in the presence of water and hydrocarbons