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Absorption of hydrophobic volatile organic compounds by a rotating packed bed / Chia-Ying Chiang in Industrial & engineering chemistry research, Vol. 51 N° 27 (Juillet 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 27 (Juillet 2012) . - pp. 9441-9445 Titre : Absorption of hydrophobic volatile organic compounds by a rotating packed bed Type de document : texte imprimé Auteurs : Chia-Ying Chiang, Auteur ; Yi-Ying Liu, Auteur ; Yu-Shao Chen, Auteur Année de publication : 2012 Article en page(s) : pp. 9441-9445 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Packed  bed  Volatile  organic  compound Résumé : The high development of industries leads to significant amount of waste hydrophobic volatile organic compounds (VOCs), and these have caused serious environmental concerns. Because of the physical properties of the hydrophobic VOCs, a hydrophobic absorbent is needed in order to make the process more efficient if absorption is considered. However, most of these absorbents have high viscosities which leads to a low mass transfer coefficient. Thus, a cross-flow rotating packed bed (RPB) was evaluated for the feasibility of absorbing the hydrophobic VOCs, xylene, and toluene, by silicon oil, a model hydrophobic absorbent. The result shows that the absorption percentage could be up to 98% within a second contact of liquid and gas. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26132281 [article] Absorption of hydrophobic volatile organic compounds by a rotating packed bed [texte imprimé] / Chia-Ying Chiang, Auteur ; Yi-Ying Liu, Auteur ; Yu-Shao Chen, Auteur . - 2012 . - pp. 9441-9445. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 27 (Juillet 2012) . - pp. 9441-9445 Mots-clés : Packed  bed  Volatile  organic  compound Résumé : The high development of industries leads to significant amount of waste hydrophobic volatile organic compounds (VOCs), and these have caused serious environmental concerns. Because of the physical properties of the hydrophobic VOCs, a hydrophobic absorbent is needed in order to make the process more efficient if absorption is considered. However, most of these absorbents have high viscosities which leads to a low mass transfer coefficient. Thus, a cross-flow rotating packed bed (RPB) was evaluated for the feasibility of absorbing the hydrophobic VOCs, xylene, and toluene, by silicon oil, a model hydrophobic absorbent. The result shows that the absorption percentage could be up to 98% within a second contact of liquid and gas. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26132281

Process intensification in the production of photocatalysts for solar hydrogen generation / Chia-Ying Chiang in Industrial & engineering chemistry research, Vol. 51 N° 14 (Avril 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 14 (Avril 2012) . - pp. 5207-5215 Titre : Process intensification in the production of photocatalysts for solar hydrogen generation Type de document : texte imprimé Auteurs : Chia-Ying Chiang, Auteur ; Ming-Hui Chang, Auteur ; Hwai-Shen Liu, Auteur Année de publication : 2012 Article en page(s) : pp. 5207-5215 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Photocatalysis  Catalyst  Hydrogen  production Résumé : CuO nanoparticles with diameter in the 20-30 nm range were prepared by a spinning disk reactor at the rate of 16.9 kg/day based on the process intensification concept The intense environment, that is, vigorous mixing and fast reaction at the same time, created within an initially crystal-free liquid film moving over the disk, generated very high supersaturation, and consequently small and fairly uniform crystals were formed via precipitation. These CuO nanoparticles were spin coated and sintered at 450 °C for 1 h to form a thin film electrode for use in a photoelectrochemical cell. The cell had a 1.20% solar to hydrogen conversion efficiency which is the highest among intrinsic CuO photoelectrochemical (PEC) cells reported to date in the literature. The bandgap of CuO films sintered at 450 °C for 1 h was 1.68 eV. The charge carrier density was 9.0 × 1020 cm―3 and the conduction and valence band edges were located at ―3.54 and -5.22 eV, respectively. Furthermore, a detailed comparison based on the preparation method, particle size, bandgap, porosity, and conductivity of the films in the CuO PEC cell literature is also reported in this study. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25783429 [article] Process intensification in the production of photocatalysts for solar hydrogen generation [texte imprimé] / Chia-Ying Chiang, Auteur ; Ming-Hui Chang, Auteur ; Hwai-Shen Liu, Auteur . - 2012 . - pp. 5207-5215. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 14 (Avril 2012) . - pp. 5207-5215 Mots-clés : Photocatalysis  Catalyst  Hydrogen  production Résumé : CuO nanoparticles with diameter in the 20-30 nm range were prepared by a spinning disk reactor at the rate of 16.9 kg/day based on the process intensification concept The intense environment, that is, vigorous mixing and fast reaction at the same time, created within an initially crystal-free liquid film moving over the disk, generated very high supersaturation, and consequently small and fairly uniform crystals were formed via precipitation. These CuO nanoparticles were spin coated and sintered at 450 °C for 1 h to form a thin film electrode for use in a photoelectrochemical cell. The cell had a 1.20% solar to hydrogen conversion efficiency which is the highest among intrinsic CuO photoelectrochemical (PEC) cells reported to date in the literature. The bandgap of CuO films sintered at 450 °C for 1 h was 1.68 eV. The charge carrier density was 9.0 × 1020 cm―3 and the conduction and valence band edges were located at ―3.54 and -5.22 eV, respectively. Furthermore, a detailed comparison based on the preparation method, particle size, bandgap, porosity, and conductivity of the films in the CuO PEC cell literature is also reported in this study. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25783429