Catalogue en ligne Bibliothèque Ecole Nationale Polytechnique d'Alger

Adsorption behavior of Li+ onto nano-lithium ion sieve from hybrid magnesium/lithium manganese oxide / Liyan Tian in Chemical engineering journal, Vol. 156 N° 1 (Janvier 2010)

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[article]
in Chemical engineering journal > Vol. 156 N° 1 (Janvier 2010) . - pp. 134-140
Titre : Adsorption behavior of Li+ onto nano-lithium ion sieve from hybrid magnesium/lithium manganese oxide
Type de document : texte imprimé
Auteurs : Liyan Tian, Auteur ; Wei Ma, Auteur ; Mei Han, Auteur
Année de publication : 2010
Article en page(s) : pp. 134-140
Note générale : Génie Chimique

Langues : Anglais (eng)
Mots-clés : Adsorption Lithium Lithium ion sieve Modeling Kinetics
Index. décimale : 660
Résumé : Magnesium (II) doped spinel lithium manganese oxide (LMS) was synthesized by soft chemical method and nanosized ion sieve manganese oxide (HMS) was prepared by extracting lithium and magnesium from LMS. The characteristics of HMS were studied by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, surface areas and determination of pH at the point of zero charge. Experiments were performed to study the effects of pH, adsorbent dose, contact time and Li+ concentration. The competitive model was used to describe the competition between Li+–H+ and the applicability of different kinetic models was evaluated. The results showed that the pH at the point of zero charge of HMS was about 7.8. The recycle of HMS explained that it could be used as Li+ adsorbent with topotactical extraction of lithium. Under optimized batch conditions up to 99.2% Li+ could be recovered from solution within 24 h. The adsorption process followed the pseudo-second-order model and followed an intraparticle diffusion model at the beginning.

DEWEY : 660
ISSN : 1385-8947
En ligne : http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TFJ-4XF840K-8&_user=6 [...]

[article] Adsorption behavior of Li+ onto nano-lithium ion sieve from hybrid magnesium/lithium manganese oxide [texte imprimé] / Liyan Tian, Auteur ; Wei Ma, Auteur ; Mei Han, Auteur . - 2010 . - pp. 134-140.
Génie Chimique

Langues : Anglais (eng)
in Chemical engineering journal > Vol. 156 N° 1 (Janvier 2010) . - pp. 134-140
Mots-clés : Adsorption Lithium Lithium ion sieve Modeling Kinetics
Index. décimale : 660
Résumé : Magnesium (II) doped spinel lithium manganese oxide (LMS) was synthesized by soft chemical method and nanosized ion sieve manganese oxide (HMS) was prepared by extracting lithium and magnesium from LMS. The characteristics of HMS were studied by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, surface areas and determination of pH at the point of zero charge. Experiments were performed to study the effects of pH, adsorbent dose, contact time and Li+ concentration. The competitive model was used to describe the competition between Li+–H+ and the applicability of different kinetic models was evaluated. The results showed that the pH at the point of zero charge of HMS was about 7.8. The recycle of HMS explained that it could be used as Li+ adsorbent with topotactical extraction of lithium. Under optimized batch conditions up to 99.2% Li+ could be recovered from solution within 24 h. The adsorption process followed the pseudo-second-order model and followed an intraparticle diffusion model at the beginning.

DEWEY : 660
ISSN : 1385-8947
En ligne : http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TFJ-4XF840K-8&_user=6 [...]

Adsorption of p-nitroaniline by phenolic hydroxyl groups modified hyper-cross-linked polymeric adsorbent and XAD-4 / Jianhan Huang in Chemical engineering journal, Vol. 155 N° 3 (Decembre 2009)

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[article]
in Chemical engineering journal > Vol. 155 N° 3 (Decembre 2009) . - pp. 722-727
Titre : Adsorption of p-nitroaniline by phenolic hydroxyl groups modified hyper-cross-linked polymeric adsorbent and XAD-4 : a comparative study
Type de document : texte imprimé
Auteurs : Jianhan Huang, Auteur ; Xianguang Wang, Auteur ; Kelong Huang, Auteur
Année de publication : 2010
Article en page(s) : pp. 722-727
Note générale : Génie Chimique
Langues : Anglais (eng)
Mots-clés : Polymeric adsorbent Adsorption p-Nitroaniline XAD-4
Index. décimale : 660
Résumé : Phenolic hydroxyl groups modified hyper-cross-linked polymeric adsorbent HJ-02 was prepared and it was applied to remove p-nitroaniline in aqueous solution as compared with Amberlite XAD-4. The results indicated that the adsorption at the solution pH of 3.7–7.8 was efficient for HJ-02 resin while that at the solution pH higher than 4.1 was favorable for XAD-4. The ionic strength affected the adsorption slightly and NaCl at a low concentration (<10%) had a positive effect. The adsorption kinetic curves obeyed the pseudo-second-order rate equation and HJ-02 resin had lower rate constant than XAD-4. The adsorption isotherms could be fitted by Langmuir isotherm and the adsorption capacity onto HJ-02 resin was much larger than that onto XAD-4. The adsorption enthalpy, adsorption free energy, and adsorption entropy onto HJ-02 resin were a little more negative than those onto XAD-4. Analysis of the adsorption mechanism suggested that the phenolic hydroxyl groups uploaded on HJ-02 resin and the predominant mesopores (2–5 nm) were the main reasons for its much larger adsorption capacity.

DEWEY : 660
ISSN : 1385-8947
En ligne : http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TFJ-4X7GMP2-2&_user=6 [...]

[article] Adsorption of p-nitroaniline by phenolic hydroxyl groups modified hyper-cross-linked polymeric adsorbent and XAD-4 : a comparative study [texte imprimé] / Jianhan Huang, Auteur ; Xianguang Wang, Auteur ; Kelong Huang, Auteur . - 2010 . - pp. 722-727.
Génie Chimique
Langues : Anglais (eng)
in Chemical engineering journal > Vol. 155 N° 3 (Decembre 2009) . - pp. 722-727
Mots-clés : Polymeric adsorbent Adsorption p-Nitroaniline XAD-4
Index. décimale : 660
Résumé : Phenolic hydroxyl groups modified hyper-cross-linked polymeric adsorbent HJ-02 was prepared and it was applied to remove p-nitroaniline in aqueous solution as compared with Amberlite XAD-4. The results indicated that the adsorption at the solution pH of 3.7–7.8 was efficient for HJ-02 resin while that at the solution pH higher than 4.1 was favorable for XAD-4. The ionic strength affected the adsorption slightly and NaCl at a low concentration (<10%) had a positive effect. The adsorption kinetic curves obeyed the pseudo-second-order rate equation and HJ-02 resin had lower rate constant than XAD-4. The adsorption isotherms could be fitted by Langmuir isotherm and the adsorption capacity onto HJ-02 resin was much larger than that onto XAD-4. The adsorption enthalpy, adsorption free energy, and adsorption entropy onto HJ-02 resin were a little more negative than those onto XAD-4. Analysis of the adsorption mechanism suggested that the phenolic hydroxyl groups uploaded on HJ-02 resin and the predominant mesopores (2–5 nm) were the main reasons for its much larger adsorption capacity.

DEWEY : 660
ISSN : 1385-8947
En ligne : http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TFJ-4X7GMP2-2&_user=6 [...]

Analytical resolution of a cyclic two-way chromatographie binary system / Castel, C. in Aiche journal, Vol. 48 N°2 (Fevrier 2002)

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[article]
in Aiche journal > Vol. 48 N°2 (Fevrier 2002) . - 245-251 p.
Titre : Analytical resolution of a cyclic two-way chromatographie binary system
Type de document : texte imprimé
Auteurs : Castel, C., Auteur ; Sardin, M., Auteur ; Simonnot, Marie-Odile
Article en page(s) : 245-251 p.
Note générale : Génie Chimique
Langues : Anglais (eng)
Mots-clés : Système binaire Echange ionique Anions de chlorure Hydrocarbonate Processus chromatographique Elution Alimentation Percolation Convergence Concentration Colonne de séparation Chlorure
Index. décimale : 660
Résumé : The focus is on analytical resolution of the mass-balance relation in the case of a binary ion-exchange system containing chloride and hydrocarbonate anions involved in a two-way chromatographic cyclic process under critical operating conditions, that is, feed and elution solutions with the same total normality and percolation volumes. Local equilibrium theory is used to demonstrate the convergence of the system toward a periodic state and to calculate iteratively the instantaneous and asymptotic concentration profiles inside the separation column. One of the main results is that the calculated chloride composition on the inlet side of the column after the elution step is equal to the chloride composition in the feed solution.

Le foyer est sur la résolution analytique de la relation de bilan de matière dans le cas d'un système binaire d'échange ionique contenant des anions de chlorure et de hydrocarbonate impliqués dans un processus cyclique chromatographique bi-directionnel dans les conditions de fonctionnement critiques, c'est-à-dire, l'alimentation et les solutions d'élution de mêmes tous les volumes de normalité et de percolation. La théorie locale d'équilibre est employée pour démontrer la convergence du système vers un état périodique et pour calculer itérativement les profils instantanés et asymptotiques de concentration à l'intérieur de la colonne de séparation. Un des résultats principaux est que la composition calculée en chlorure du côté d'admission de la colonne après que l'étape d'élution soit égale à la composition en chlorure dans la solution d'alimentation.

DEWEY : 660.627.3
ISSN : 0001-1541
RAMEAU : Système binaire, Chromatographie
En ligne : Marie-Odile.Simonnot@ensic.inpl-nancy.fr

[article] Analytical resolution of a cyclic two-way chromatographie binary system [texte imprimé] / Castel, C., Auteur ; Sardin, M., Auteur ; Simonnot, Marie-Odile . - 245-251 p.
Génie Chimique
Langues : Anglais (eng)
in Aiche journal > Vol. 48 N°2 (Fevrier 2002) . - 245-251 p.
Mots-clés : Système binaire Echange ionique Anions de chlorure Hydrocarbonate Processus chromatographique Elution Alimentation Percolation Convergence Concentration Colonne de séparation Chlorure
Index. décimale : 660
Résumé : The focus is on analytical resolution of the mass-balance relation in the case of a binary ion-exchange system containing chloride and hydrocarbonate anions involved in a two-way chromatographic cyclic process under critical operating conditions, that is, feed and elution solutions with the same total normality and percolation volumes. Local equilibrium theory is used to demonstrate the convergence of the system toward a periodic state and to calculate iteratively the instantaneous and asymptotic concentration profiles inside the separation column. One of the main results is that the calculated chloride composition on the inlet side of the column after the elution step is equal to the chloride composition in the feed solution.

Le foyer est sur la résolution analytique de la relation de bilan de matière dans le cas d'un système binaire d'échange ionique contenant des anions de chlorure et de hydrocarbonate impliqués dans un processus cyclique chromatographique bi-directionnel dans les conditions de fonctionnement critiques, c'est-à-dire, l'alimentation et les solutions d'élution de mêmes tous les volumes de normalité et de percolation. La théorie locale d'équilibre est employée pour démontrer la convergence du système vers un état périodique et pour calculer itérativement les profils instantanés et asymptotiques de concentration à l'intérieur de la colonne de séparation. Un des résultats principaux est que la composition calculée en chlorure du côté d'admission de la colonne après que l'étape d'élution soit égale à la composition en chlorure dans la solution d'alimentation.

DEWEY : 660.627.3
ISSN : 0001-1541
RAMEAU : Système binaire, Chromatographie
En ligne : Marie-Odile.Simonnot@ensic.inpl-nancy.fr

Application of carbon adsorbents prepared from the Brazilian pine-fruit-shell for the removal of Procion Red MX 3B from aqueous solution—Kinetic, equilibrium, and thermodynamic studies / Tatiana Calvete in Chemical engineering journal, Vol. 155 N° 3 (Decembre 2009)

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[article]
in Chemical engineering journal > Vol. 155 N° 3 (Decembre 2009) . - pp. 627-636
Titre : Application of carbon adsorbents prepared from the Brazilian pine-fruit-shell for the removal of Procion Red MX 3B from aqueous solution—Kinetic, equilibrium, and thermodynamic studies
Type de document : texte imprimé
Auteurs : Tatiana Calvete, Auteur ; Eder C. Lima, Auteur ; Natali F. Cardoso, Auteur
Année de publication : 2010
Article en page(s) : pp. 627-636
Note générale : Génie Chimique
Langues : Anglais (eng)
Mots-clés : Adsorption Brazilian pine-fruit-shell Activated carbon Procion Red MX 3B dye Simulated dyehouse effluent
Index. décimale : 660
Résumé : Activated (AC-PW) and non-activated (C-PW) carbonaceous materials were prepared from the Brazilian pine-fruit-shell (Araucaria angustifolia) and tested as adsorbents for the removal of Procion Red MX 3B dye (PR-3B) from aqueous effluents. The activation process lead to increase in the specific surface area, average porous volume, and average porous diameter of the adsorbent AC-PW when compared to C-PW. The effects of shaking time, adsorbent dosage and pH on adsorption capacity were studied. PR-3B uptake was favorable at pHs ranging from 2.0 to 3.0 for C-PW and 2.0 to 7.0 for AC-PW. The contact time required to obtain the equilibrium using C-PW and AC-PW as adsorbents was 6 and 4 h at 298 K, respectively. The values of the function error (Ferror) of fractionary-order kinetic model was at least 15 times lower than the values obtained with pseudo-first-order, pseudo-second order and Elovich kinetic models, indicating that this kinetic model was better fitted to the experimental results. For equilibrium data the Ferror values of the Sips isotherm model were at least 4.0 lower than the values of Langmuir, Freundlich, and Redlich-Peterson isotherm models using C-PW and AC-PW as adsorbents. The enthalpy and entropy of adsorption of PR-3B were obtained from adsorption experiments ranging from 298 to 323 K. Simulated dyehouse effluents were used to check the applicability of the proposed carbons for effluent treatment.

DEWEY : 660
ISSN : 1385-8947
En ligne : http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TFJ-4X49YKT-1&_user=6 [...]

[article] Application of carbon adsorbents prepared from the Brazilian pine-fruit-shell for the removal of Procion Red MX 3B from aqueous solution—Kinetic, equilibrium, and thermodynamic studies [texte imprimé] / Tatiana Calvete, Auteur ; Eder C. Lima, Auteur ; Natali F. Cardoso, Auteur . - 2010 . - pp. 627-636.
Génie Chimique
Langues : Anglais (eng)
in Chemical engineering journal > Vol. 155 N° 3 (Decembre 2009) . - pp. 627-636
Mots-clés : Adsorption Brazilian pine-fruit-shell Activated carbon Procion Red MX 3B dye Simulated dyehouse effluent
Index. décimale : 660
Résumé : Activated (AC-PW) and non-activated (C-PW) carbonaceous materials were prepared from the Brazilian pine-fruit-shell (Araucaria angustifolia) and tested as adsorbents for the removal of Procion Red MX 3B dye (PR-3B) from aqueous effluents. The activation process lead to increase in the specific surface area, average porous volume, and average porous diameter of the adsorbent AC-PW when compared to C-PW. The effects of shaking time, adsorbent dosage and pH on adsorption capacity were studied. PR-3B uptake was favorable at pHs ranging from 2.0 to 3.0 for C-PW and 2.0 to 7.0 for AC-PW. The contact time required to obtain the equilibrium using C-PW and AC-PW as adsorbents was 6 and 4 h at 298 K, respectively. The values of the function error (Ferror) of fractionary-order kinetic model was at least 15 times lower than the values obtained with pseudo-first-order, pseudo-second order and Elovich kinetic models, indicating that this kinetic model was better fitted to the experimental results. For equilibrium data the Ferror values of the Sips isotherm model were at least 4.0 lower than the values of Langmuir, Freundlich, and Redlich-Peterson isotherm models using C-PW and AC-PW as adsorbents. The enthalpy and entropy of adsorption of PR-3B were obtained from adsorption experiments ranging from 298 to 323 K. Simulated dyehouse effluents were used to check the applicability of the proposed carbons for effluent treatment.

DEWEY : 660
ISSN : 1385-8947
En ligne : http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TFJ-4X49YKT-1&_user=6 [...]

Aqueous HCl electrolysis utilizing an oxygen reducing cathode / F. Mohammadi in Chemical engineering journal, Vol. 155 N° 3 (Decembre 2009)

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[article]
in Chemical engineering journal > Vol. 155 N° 3 (Decembre 2009) . - pp. 757-762
Titre : Aqueous HCl electrolysis utilizing an oxygen reducing cathode
Type de document : texte imprimé
Auteurs : F. Mohammadi, Auteur ; S. N. Ashrafizadeh, Auteur ; A. Sattari, Auteur
Année de publication : 2010
Article en page(s) : pp. 757-762
Note générale : Génie Chimique
Langues : Anglais (eng)
Mots-clés : Aqueous HCl Electrolysis Oxygen reducing cathode Membrane CCE MEA
Index. décimale : 660
Résumé : The effects of various process parameters on the cell voltage and chlorine current efficiency (CCE) in a Half-MEA (Nafion® 115 membrane-Loading: 0.4 mg Pt/cm2) oxygen reducing membrane electrolysis cell employing a dimensionally stable anode (DSA®) were studied. Process parameters under investigation included anolyte concentration, anolyte flow rate, anolyte temperature, oxygen flow rate and applied current density. The effect of the latter parameters on the cell voltage and CCE was determined quantitatively. Taguchi and ANOVA techniques were employed for experimental design and data analysis, respectively.
It was observed that increasing either of anolyte flow rate, anolyte concentration, oxygen flow rate and anolyte temperature caused a decrease in cell voltage and an increase in CCE. At the same time, increasing current density linearly increased cell voltage. Current density and the anolyte flow rate had the highest contributions, of 49.7% and 30.62%, to the cell voltage, respectively. On the other hand, the oxygen flow rate and the anolyte flow rate had the highest contributions, of 57.19% and 23.66%, on the CCE, respectively.

DEWEY : 660
ISSN : 1385-8947
En ligne : http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TFJ-4X8CD4K-3&_user=6 [...]

[article] Aqueous HCl electrolysis utilizing an oxygen reducing cathode [texte imprimé] / F. Mohammadi, Auteur ; S. N. Ashrafizadeh, Auteur ; A. Sattari, Auteur . - 2010 . - pp. 757-762.
Génie Chimique
Langues : Anglais (eng)
in Chemical engineering journal > Vol. 155 N° 3 (Decembre 2009) . - pp. 757-762
Mots-clés : Aqueous HCl Electrolysis Oxygen reducing cathode Membrane CCE MEA
Index. décimale : 660
Résumé : The effects of various process parameters on the cell voltage and chlorine current efficiency (CCE) in a Half-MEA (Nafion® 115 membrane-Loading: 0.4 mg Pt/cm2) oxygen reducing membrane electrolysis cell employing a dimensionally stable anode (DSA®) were studied. Process parameters under investigation included anolyte concentration, anolyte flow rate, anolyte temperature, oxygen flow rate and applied current density. The effect of the latter parameters on the cell voltage and CCE was determined quantitatively. Taguchi and ANOVA techniques were employed for experimental design and data analysis, respectively.
It was observed that increasing either of anolyte flow rate, anolyte concentration, oxygen flow rate and anolyte temperature caused a decrease in cell voltage and an increase in CCE. At the same time, increasing current density linearly increased cell voltage. Current density and the anolyte flow rate had the highest contributions, of 49.7% and 30.62%, to the cell voltage, respectively. On the other hand, the oxygen flow rate and the anolyte flow rate had the highest contributions, of 57.19% and 23.66%, on the CCE, respectively.

DEWEY : 660
ISSN : 1385-8947
En ligne : http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TFJ-4X8CD4K-3&_user=6 [...]

Assessment of the leaching characteristics of incineration ashes in cement matrix / R.O. Abdel Rahman in Chemical engineering journal, Vol. 155 N° 3 (Decembre 2009)

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Atomistic SPH and a link between diffusion and interfacial tension / Nitsche, Ludwig C. in Aiche journal, Vol. 48 N°2 (Fevrier 2002)

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Atrazine degradation by in situ electrochemically generated ozone / Ysrael Marrero Vera in Chemical engineering journal, Vol. 155 N° 3 (Decembre 2009)

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Biosorption of hexavalent chromium from aqueous solutions by Catla catla scales / Kondapalli Srividya in Chemical engineering journal, Vol. 155 N° 3 (Decembre 2009)

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Characterization of membrane foulants in an anaerobic non-woven fabric membrane bioreactor for municipal wastewater treatment / Ying An in Chemical engineering journal, Vol. 155 N° 3 (Decembre 2009)

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Characterization of nanofibrous carbon produced at pilot-scale in a fluidized bed reactor by methane decomposition / J.L. Pinilla in Chemical engineering journal, Vol. 156 N° 1 (Janvier 2010)

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Characterization of silica-coated silver nanoparticles prepared by a reverse micelle and hydrolysis–condensation process / Nobuhiro Hagura in Chemical engineering journal, Vol. 156 N° 1 (Janvier 2010)

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Chitosan flocculation of cardboard-mill secondary biological wastewater / François Renault in Chemical engineering journal, Vol. 155 N° 3 (Decembre 2009)

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CO2 capture from air via CaO-carbonation using a solar-driven fluidized bed reactor / V. Nikulshina in Chemical engineering journal, Vol. 155 N° 3 (Decembre 2009)

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Coagulation of bentonite suspension by polyelectrolytes or ferric chloride / E. Barbot in Chemical engineering journal, Vol. 156 N° 1 (Janvier 2010)

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