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Dupont V, Ognier S, Morand G, Ollivier C, Fensterbank L, Tatoulian M. Direct Amination of Benzene with Ammonia by Flow Plasma Chemistry. Chemistry 2023; 29:e202301666. [PMID: 37431686 DOI: 10.1002/chem.202301666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/07/2023] [Accepted: 07/10/2023] [Indexed: 07/12/2023]
Abstract
Amine derivatives, including aniline and allylic amines, can be formed in a single-step process from benzene and an ammonia plasma in a microreactor. Different process parameters such as temperature, residence time, and plasma power were evaluated to improve the reaction yield and its selectivity toward aminated products and avoid hydrogenated or oligomerized products. In parallel, simulation studies of the process have been carried out to propose a global mechanism and gain a better understanding of the influence of the different process parameters. The exploration of diverse related alkenes showed that the double bonds, conjugation, and aromatization influenced the amination mechanism. Benzene was the best reactant for amination based on the lifetime of radical intermediates. Under optimized conditions, benzene was aminated in the absence of catalyst with a yield of 3.8 % and a selectivity of 49 % in various amino compounds.
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Affiliation(s)
- Victor Dupont
- Institut de Recherche de Chimie Paris, UMR 8247, 2PM group, Chimie ParisTech-PSL, PSL Université Paris, CNRS, 11 rue Pierre et Marie Curie, 75005, Paris, France
| | - Stéphanie Ognier
- Institut de Recherche de Chimie Paris, UMR 8247, 2PM group, Chimie ParisTech-PSL, PSL Université Paris, CNRS, 11 rue Pierre et Marie Curie, 75005, Paris, France
| | - Gabriel Morand
- Institut de Recherche de Chimie Paris, UMR 8247, 2PM group, Chimie ParisTech-PSL, PSL Université Paris, CNRS, 11 rue Pierre et Marie Curie, 75005, Paris, France
| | - Cyril Ollivier
- Institut Parisien de Chimie Moléculaire, UMR 8232, MACO group, Sorbonne Université, CNRS, 4 place Jussieu, 75005, Paris, France
| | - Louis Fensterbank
- Institut Parisien de Chimie Moléculaire, UMR 8232, MACO group, Sorbonne Université, CNRS, 4 place Jussieu, 75005, Paris, France
| | - Michael Tatoulian
- Institut de Recherche de Chimie Paris, UMR 8247, 2PM group, Chimie ParisTech-PSL, PSL Université Paris, CNRS, 11 rue Pierre et Marie Curie, 75005, Paris, France
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Radjagobalou R, Imbratta M, Bergraser J, Gaudeau M, Lyvinec G, Delbrayelle D, Jentzer O, Roudin J, Laroche B, Ognier S, Tatoulian M, Cossy J, Echeverria PG. Selective Photochemical Continuous Flow Benzylic Monochlorination. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.2c00065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Robbie Radjagobalou
- Paris FLOW Tech − PSL, ENSCP, 11 rue Pierre et Marie Curie, Paris 75005, France
| | - Miguel Imbratta
- Minakem Recherche, 145 Chemin des Lilas, Beuvry-La-Forêt 59310, France
| | - Julie Bergraser
- Minakem Recherche, 145 Chemin des Lilas, Beuvry-La-Forêt 59310, France
| | - Marion Gaudeau
- Minakem Recherche, 145 Chemin des Lilas, Beuvry-La-Forêt 59310, France
| | - Gildas Lyvinec
- Minakem Recherche, 145 Chemin des Lilas, Beuvry-La-Forêt 59310, France
| | | | - Olivier Jentzer
- Minakem Recherche, 145 Chemin des Lilas, Beuvry-La-Forêt 59310, France
| | - Jérémy Roudin
- Paris FLOW Tech − PSL, ENSCP, 11 rue Pierre et Marie Curie, Paris 75005, France
| | - Benjamin Laroche
- Paris FLOW Tech − PSL, ENSCP, 11 rue Pierre et Marie Curie, Paris 75005, France
| | - Stéphanie Ognier
- Paris FLOW Tech − PSL, ENSCP, 11 rue Pierre et Marie Curie, Paris 75005, France
| | - Michael Tatoulian
- Paris FLOW Tech − PSL, ENSCP, 11 rue Pierre et Marie Curie, Paris 75005, France
| | - Janine Cossy
- Paris FLOW Tech − PSL, ENSCP, 11 rue Pierre et Marie Curie, Paris 75005, France
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Abstract
The oligomerization of 1-hexene under argon plasma was investigated in a gas-liquid, continuous flow microreactor. The evolution of the yields of the reaction products as a function of the residence...
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Wang B, Mikhail M, Cavadias S, Tatoulian M, Da Costa P, Ognier S. Improvement of the activity of CO2 methanation in a hybrid plasma-catalytic process in varying catalyst particle size or under pressure. J CO2 UTIL 2021. [DOI: 10.1016/j.jcou.2021.101471] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Gaudeau M, Zhang M, Tatoulian M, Lescot C, Ognier S. Fast carbonylation reaction from CO 2 using plasma gas/liquid microreactors for radiolabeling applications. REACT CHEM ENG 2020. [DOI: 10.1039/d0re00289e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The major challenge for 11C-radiolabelling is the short half-life time of 11C (t1/2 = 20.4 min) – in this study, a novel efficient process combining microfluidics and plasma is proposed for fast carbonylation reactions from CO2.
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Affiliation(s)
- Marion Gaudeau
- Chimie ParisTech-PSL
- PSL Université Paris
- CNRS
- Institut de Recherche de Chimie Paris
- 75005 Paris
| | - Mengxue Zhang
- Chimie ParisTech-PSL
- PSL Université Paris
- CNRS
- Institut de Recherche de Chimie Paris
- 75005 Paris
| | - Michaël Tatoulian
- Chimie ParisTech-PSL
- PSL Université Paris
- CNRS
- Institut de Recherche de Chimie Paris
- 75005 Paris
| | - Camille Lescot
- Chimie ParisTech-PSL
- PSL Université Paris
- CNRS
- 75005 Paris
- France
| | - Stéphanie Ognier
- Chimie ParisTech-PSL
- PSL Université Paris
- CNRS
- Institut de Recherche de Chimie Paris
- 75005 Paris
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Mikhail M, Da Costa P, Amouroux J, Cavadias S, Tatoulian M, Ognier S, Gálvez ME. Electrocatalytic behaviour of CeZrO x-supported Ni catalysts in plasma assisted CO 2 methanation. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00312c] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Plasma and thermo-catalytic methanation were assayed in the presence of a CeZrOx-supported Ni catalyst. High CO2 conversions and high methane yields were obtained under DBD plasma, and are maintained with time-on-stream over 100 h operating time.
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Affiliation(s)
- Maria Mikhail
- Sorbonne Université
- Institut Jean le Rond d'Alembert
- CNRS UMR 7190
- 78210 Saint-Cyr l'Ecole
- France
| | - Patrick Da Costa
- Sorbonne Université
- Institut Jean le Rond d'Alembert
- CNRS UMR 7190
- 78210 Saint-Cyr l'Ecole
- France
| | - Jacques Amouroux
- Institut de Recherche de Chimie Paris
- UMR 8247 (CNRS – Chimie ParisTech)
- 75005 Paris
- France
| | - Siméon Cavadias
- Institut de Recherche de Chimie Paris
- UMR 8247 (CNRS – Chimie ParisTech)
- 75005 Paris
- France
| | - Michael Tatoulian
- Institut de Recherche de Chimie Paris
- UMR 8247 (CNRS – Chimie ParisTech)
- 75005 Paris
- France
| | - Stéphanie Ognier
- Institut de Recherche de Chimie Paris
- UMR 8247 (CNRS – Chimie ParisTech)
- 75005 Paris
- France
| | - María Elena Gálvez
- Sorbonne Université
- Institut Jean le Rond d'Alembert
- CNRS UMR 7190
- 78210 Saint-Cyr l'Ecole
- France
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Wengler J, Ognier S, Zhang M, Levernier E, Guyon C, Ollivier C, Fensterbank L, Tatoulian M. Microfluidic chips for plasma flow chemistry: application to controlled oxidative processes. REACT CHEM ENG 2018. [DOI: 10.1039/c8re00122g] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel biphasic gas/liquid plasma microreactor performed controlled oxidation of cyclohexane into “KA oil” with more than 70% selectivity and more than 10% conversion.
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Affiliation(s)
- Julien Wengler
- Chimie ParisTech
- PSL Université Paris
- CNRS
- Institut de Recherche de Chimie Paris
- 75005 Paris
| | - Stéphanie Ognier
- Chimie ParisTech
- PSL Université Paris
- CNRS
- Institut de Recherche de Chimie Paris
- 75005 Paris
| | - Mengxue Zhang
- Chimie ParisTech
- PSL Université Paris
- CNRS
- Institut de Recherche de Chimie Paris
- 75005 Paris
| | - Etienne Levernier
- Sorbonne Université
- CNRS
- Institut Parisien de Chimie Moléculaire
- MACO group
- 75005 Paris
| | - Cedric Guyon
- Chimie ParisTech
- PSL Université Paris
- CNRS
- Institut de Recherche de Chimie Paris
- 75005 Paris
| | - Cyril Ollivier
- Sorbonne Université
- CNRS
- Institut Parisien de Chimie Moléculaire
- MACO group
- 75005 Paris
| | - Louis Fensterbank
- Sorbonne Université
- CNRS
- Institut Parisien de Chimie Moléculaire
- MACO group
- 75005 Paris
| | - Michael Tatoulian
- Chimie ParisTech
- PSL Université Paris
- CNRS
- Institut de Recherche de Chimie Paris
- 75005 Paris
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Ferhat MF, Ghezzar MR, Smaïl B, Guyon C, Ognier S, Addou A. Conception of a novel spray tower plasma-reactor in a spatial post-discharge configuration: Pollutants remote treatment. J Hazard Mater 2017; 321:661-671. [PMID: 27694030 DOI: 10.1016/j.jhazmat.2016.09.052] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Revised: 09/04/2016] [Accepted: 09/22/2016] [Indexed: 06/06/2023]
Abstract
This paper describes a novel gliding Arc discharge reactor producing a non-thermal plasma at atmospheric pressure in humid air. The ionized gas is generated in a spray-tower absorber for the treatment of organic pollutants. The reactor configuration enables the plasma-degradation of micro-droplets effluents in the spatial post-discharge mode. This type of design allows to exclude the direct contact between the plasma plume and the liquid to be treated in order to avoid the liquid heating and the flame extinction problems. A hydrodynamic study coupling 'Navier-Stokes' equations and those of 'Convection-Diffusion' allowed to calculate the concentration profiles and the droplet falling velocity. The stripping of phenol was studied to valid the hydrodynamic approach. Experiences and simulations showed that after 1h of treatment, only 5% of the compound was transferred into the plasma phase. The spatiality of the novel reactor allowed a degradation rate of 100% for catechol after 38min of plasma-treatment. For 4-nitrophenol, the degradation rate reached 90% after 120min. Phenol and its by-products degradation were totally degraded by combining the spatiality of the reactor and the temporal post-discharge. A degradation mechanism was proposed and a plasmachemical reaction in relation with the pernitrous acid species was confirmed.
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Affiliation(s)
- Mohamed Fouad Ferhat
- Laboratoire des Sciences et Techniques de l'Environnement et de la Valorisation. Faculté des Sciences et de la Technologie, Université de Mostaganem, Algeria
| | - Mouffok Redouane Ghezzar
- Laboratoire des Sciences et Techniques de l'Environnement et de la Valorisation. Faculté des Sciences et de la Technologie, Université de Mostaganem, Algeria.
| | - Bentaïba Smaïl
- Laboratoire des Sciences et Techniques de l'Environnement et de la Valorisation. Faculté des Sciences et de la Technologie, Université de Mostaganem, Algeria
| | - Cedric Guyon
- Institut de Recherche de Chimie Paris (IRCP), Equipe 2PM (Procédés, Plasmas, Microsystèmes), UMR 8247, Chimie ParisTech-CNRS, 11 Rue Pierre et Marie Curie, 75005 Paris, France
| | - Stéphanie Ognier
- Institut de Recherche de Chimie Paris (IRCP), Equipe 2PM (Procédés, Plasmas, Microsystèmes), UMR 8247, Chimie ParisTech-CNRS, 11 Rue Pierre et Marie Curie, 75005 Paris, France
| | - Ahmed Addou
- Laboratoire des Sciences et Techniques de l'Environnement et de la Valorisation. Faculté des Sciences et de la Technologie, Université de Mostaganem, Algeria
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Li R, Liu Y, Mu R, Cheng W, Ognier S. Evaluation of pulsed corona discharge plasma for the treatment of petroleum-contaminated soil. Environ Sci Pollut Res Int 2017; 24:1450-1458. [PMID: 27783249 DOI: 10.1007/s11356-016-7929-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 10/16/2016] [Indexed: 06/06/2023]
Abstract
Petroleum hydrocarbons released to the environment caused by leakage or illegal dumping pose a threat to human health and the natural environment. In this study, the potential of a pulsed corona discharge plasma system for treating petroleum-polluted soils was evaluated. This system removed 76.93 % of the petroleum from the soil in 60 min with an energy efficiency of 0.20 mg/kJ. Furthermore, the energy and degradation efficiencies for the remediation of soil contaminated by single polyaromatic hydrocarbons, such as phenanthrene and pyrene, were also compared, and the results showed that this technology had potential in organic-polluted soil remediation. In addition, the role of water molecules was investigated for their direct involvement in the formation and transportation of active species. The increase of soil moisture to a certain extent clearly benefitted degradation efficiency. Then, treated soils were analyzed by FTIR and GC-MS for proposing the degradation mechanism of petroleum. During the plasma discharging processes, the change of functional group and the detection of small aromatic hydrocarbons indicated that the plasma active species attached petroleum hydrocarbons and degradation occurred. This technique reported herein demonstrated significant potential for the remediation of heavily petroleum-polluted soil, as well as for the treatment of organic-polluted soils.
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Affiliation(s)
- Rui Li
- School of Environmental Science and Engineering, Dong Hua University, Shanghai, China
| | - Yanan Liu
- School of Environmental Science and Engineering, Dong Hua University, Shanghai, China.
- State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Shanghai, China.
| | - Ruiwen Mu
- School of Environmental Science and Engineering, Dong Hua University, Shanghai, China
| | - Wenyan Cheng
- School of Environmental Science and Engineering, Dong Hua University, Shanghai, China
| | - Stéphanie Ognier
- Laboratoire de Génie des Procédés et Traitements de Surface, UPMC Univirsity of Paris 06, EA 3492, 11 rue Pierre et Marie Curie, 75005, Paris, France
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Benrabbah R, Cavaniol C, Liu H, Ognier S, Cavadias S, Gálvez ME, Da Costa P. Plasma DBD activated ceria-zirconia-promoted Ni-catalysts for plasma catalytic CO2 hydrogenation at low temperature. CATAL COMMUN 2017. [DOI: 10.1016/j.catcom.2016.10.028] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Sun Y, Liu Y, Li R, Xue G, Ognier S. Degradation of reactive blue 19 by needle-plate non-thermal plasma in different gas atmospheres: Kinetics and responsible active species study assisted by CFD calculations. Chemosphere 2016; 155:243-249. [PMID: 27124311 DOI: 10.1016/j.chemosphere.2016.04.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2015] [Revised: 02/13/2016] [Accepted: 04/07/2016] [Indexed: 06/05/2023]
Abstract
This study investigated the degradation of a model organic compound, reactive blue (RB-19), in aqueous solution using a needle-plate non-thermal plasma (NTP) reactor, which was operated using three gas atmospheres (Ar, air, O2) at room temperature and atmospheric pressure. The relative discharge and degradation parameters, including the peak to peak applied voltage, power, ozone generation, pH, decolorization rates, energy density and the total organic carbon (TOC) reduction were analyzed to determine the various dye removal efficiencies. The decolorization rate for Ar, air and O2 were 59.9%, 49.6% and 89.8% respectively at the energy density of 100 kJ/L. The best TOC reduction was displayed by Ar with about 8.8% decrease, and 0% with O2 and air atmospheres. This phenomenon could be explained by the formation of OH• and O3 in the Ar and O2 atmospheres, which are responsible for increased mineralization and efficient decolorization. A one-dimension model was developed using software COMSOL to simulate the RB-19-ozone reaction and verify the experiments by comparing the simulated and experimental results. It was determined that ozone plays the most important role in the dye removal process, and the ozone contribution rate ranged from 0.67 to 0.82.
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Affiliation(s)
- Yu Sun
- School of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Yanan Liu
- School of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China.
| | - Rui Li
- School of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Gang Xue
- School of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Stéphanie Ognier
- UPMC Univ Paris 06, EA 3492, Laboratoire de Génie des Procédés et Traitements de Surface, 11 rue Pierre et Marie Curie, 75005 Paris, France
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Schelcher G, Guyon C, Ognier S, Cavadias S, Martinez E, Taniga V, Malaquin L, Tabeling P, Tatoulian M. Cyclic olefin copolymer plasma millireactors. Lab Chip 2014; 14:3037-3042. [PMID: 24957952 DOI: 10.1039/c4lc00423j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The novelty of this paper lies in the development of a multistep process for the manufacturing of plasma millireactors operating at atmospheric pressure. The fabrication process relies on the integration of metallic electrodes over a cyclic olefin copolymer chip by a combination of photopatterning and sputtering. The developed plasma millireactors were successfully tested by creating air discharges in the gas volume of the millichannel. A sputtered silica layer was deposited on the channel walls to provide a barrier between the plasma and the polymer in order to prevent the alteration of polymer surfaces during the plasma treatment. Interest in this process of employing plasma millireactor as a high reactive environment is demonstrated here by the degradation of a volatile organic compound (acetaldehyde) in ambient air. In this miniaturized device, we obtained a high acetaldehyde conversion (98%) for a specific input energy lower than 200 J L(-1).
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Affiliation(s)
- G Schelcher
- Institut de Recherche de Chimie Paris, CNRS - Chimie ParisTech, 11 rue Pierre et Marie Curie, 75005 Paris, France.
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Haddou N, Ghezzar MR, Abdelmalek F, Ognier S, Martel M, Addou A. Plasmacatalytic removal of lead acetate assisted by precipitation. Chemosphere 2014; 107:304-310. [PMID: 24462087 DOI: 10.1016/j.chemosphere.2013.12.071] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 12/16/2013] [Accepted: 12/28/2013] [Indexed: 06/03/2023]
Abstract
The Gliding Arc Discharge (GAD) is an efficient non-thermal plasma technique able to degrade organic compounds dispersed in water at atmospheric pressure. The degradation of the organometallic lead acetate (PbAc) in aqueous solution was performed by two distinct plasmageneous processes: GAD and GAD/TiO2. The global oxidation of the organic matter was followed by Chemical Oxygen Demand (COD) and the mineralization was determined by the Total Organic Carbon (TOC). The Pb(2+) ions released during the degradation process were measured by Atomic Absorption Spectroscopy (AAS). For 2h of GAD treatment, the degradation rate of PbAc (10mM) reached 83% and for the same duration of GAD/TiO2 process ([TiO2]=1gL(-1)), it reached 93%. The release of Pb(2+) ions in the solution was respectively of 95% and 57% for GAD and GAD/TiO2 processes. The released Pb(2+) ions were removed by precipitation process in a basic medium at pH=11.1. A reaction mechanism was proposed to explain the PbAc molecule degradation and the Pb(2+) elimination.
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Affiliation(s)
- Nabila Haddou
- Laboratoire des Sciences et Techniques de l'Environnement et de la Valorisation, Faculté des Sciences et de la technologie, Université de Mostaganem, Algeria
| | - Mouffok Redouane Ghezzar
- Laboratoire des Sciences et Techniques de l'Environnement et de la Valorisation, Faculté des Sciences et de la technologie, Université de Mostaganem, Algeria; Laboratoire de Génie des Procédés Plasma et traitement de surface, UPMC Université de Paris 06, 11 rue Pierre et Marie Curie 75005, France.
| | - Fatiha Abdelmalek
- Laboratoire des Sciences et Techniques de l'Environnement et de la Valorisation, Faculté des Sciences et de la technologie, Université de Mostaganem, Algeria
| | - Stéphanie Ognier
- Laboratoire de Génie des Procédés Plasma et traitement de surface, UPMC Université de Paris 06, 11 rue Pierre et Marie Curie 75005, France
| | | | - Ahmed Addou
- Laboratoire des Sciences et Techniques de l'Environnement et de la Valorisation, Faculté des Sciences et de la technologie, Université de Mostaganem, Algeria
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Liu Y, Hu J, Xu B, He J, Gao P, Liu K, Xue G, Ognier S. Isolation and identification of an iopromide-degrading strain and its application in an A2/O system. Bioresour Technol 2013; 134:36-42. [PMID: 23500557 DOI: 10.1016/j.biortech.2013.02.043] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 02/15/2013] [Accepted: 02/16/2013] [Indexed: 06/01/2023]
Abstract
An iopromide (IOPr)-degrading bacterium was isolated from activated sludge of a wastewater treatment plant in Shanghai. Based on its morphology, physiological-biochemical characteristics and a phylogenetic analysis of its 16S rRNA sequence, the bacterium was identified and named as Pseudomonas sp. I-24. The optimum condition for degrading IOPr was at 30°C and pH 7.0. After 5 days, strain I-24 could degrade 30 mg/L IOPr by 99% in a basal salts medium with a 5% (V/V) inoculum and 200 mg/L starch as the primary substrate. When applied to an Anaerobic-Anoxic/Aerobic (A2/O) process, with the coexistence of other bacteria, the strain I-24 got lower (61.3%) IOPr removal, but in two A2/O systems (with and without I-24 inoculation), the CODcr removal were both approximately 95%. The trial dosed with strain I-24 showed better IOPr removal than the un-dosed one. I-24 sustained its abundance in the A2/O system during the experiment.
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Affiliation(s)
- Yanan Liu
- School of Environmental Science and Engineering, Dong Hua University, Shanghai 201620, China.
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Ghezzar MR, Ognier S, Cavadias S, Abdelmalek F, Addou A. DBDplate-TiO2 treatment of Yellow Tartrazine azo dye solution in falling film. Sep Purif Technol 2013. [DOI: 10.1016/j.seppur.2012.11.026] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Liu YN, Tian L, Li R, Mei SF, Xue G, Ognier S. KN-B removal from water by non-thermal plasma. Water Sci Technol 2013; 68:1288-1292. [PMID: 24056425 DOI: 10.2166/wst.2013.367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The degradation of Reactive Black 5 (KN-B) in water using double-dielectric barrier discharge (DDBD) was studied. Experimental results showed that the KN-B degradation rate increased as the initial pH decreased. Low concentrations of Fe(2+) enhanced the degradation, whereas high concentrations of Fe(2+) hindered the degradation. The results showed that DDBD did not noticeably reduce total organic carbon but did reduce the pH value and improve the biodegradability of the solution significantly. Furthermore, the UV-Vis spectra of the dye showed that the chromophore group was damaged and that the solution was decolorized after the 10-min degradation process.
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Affiliation(s)
- Ya-nan Liu
- School of Environmental Science and Engineering, Dong Hua University, Shanghai 201620, China E-mail:
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Ardhaoui M, Falcimaigne A, Ognier S, Engasser JM, Moussou P, Pauly G, Ghoul M. Effect of acyl donor chain length and substitutions pattern on the enzymatic acylation of flavonoids. J Biotechnol 2004; 110:265-71. [PMID: 15163517 DOI: 10.1016/j.jbiotec.2004.03.003] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2003] [Revised: 12/15/2003] [Accepted: 03/03/2004] [Indexed: 10/26/2022]
Abstract
Rutin and esculin were enzymatically acylated with different aliphatic acids as acyl donors (fatty acids, dicarboxylic acids and omega-substituted fatty acids) by an immobilized lipase from Candida antarctica. The effect of the water content and the acyl donors pattern on the flavonoid initial acylation rate and conversion yield were investigated. The obtained results indicated that the water content of the medium has a strong effect on the performance of these reactions. The best conversion yields were reached when the water content was kept lower than 200 ppm. At low water content of the medium, these syntheses are influenced by carbon chain length and substitution pattern of the acyl donors. Higher conversion yields of esculin and rutin (>70%) were obtained with aliphatic acids having high carbon chain length (>12). Moreover, it has been found that the amine and thiol groups on omega-substituted fatty acid chain were unfavourable to these reactions. The 1H NMR and 13C NMR analyses of some synthesized esters (esculin and rutin palmitate) show that only monoesters were produced and that the esterification takes place on the primary OH of glucose moiety of the esculin and on the secondary 4"'-OH of the rhamnose residue of rutin.
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Affiliation(s)
- M Ardhaoui
- Laboratoire Bioprocédés Agroalimentaire, ENSAIA-INPL 2, Av de la Forêt de Haye, 54500 Vandoeuvre, France
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Soultani S, Ognier S, Engasser JM, Ghoul M. Comparative study of some surface active properties of fructose esters and commercial sucrose esters. Colloids Surf A Physicochem Eng Asp 2003. [DOI: 10.1016/s0927-7757(03)00360-1] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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