Documents disponibles écrits par cet auteur

Fragment-based approach for estimating thermophysical properties of fats and vegetable oils for modeling biodiesel production processes / Ramanathan, Sundaram in Industrial & engineering chemistry research, Vol. 49 N° 2 (Janvier 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 2 (Janvier 2010) . - pp 876–886 Titre : Fragment-based approach for estimating thermophysical properties of fats and vegetable oils for modeling biodiesel production processes Type de document : texte imprimé Auteurs : Ramanathan, Sundaram, Auteur ; Chau-Chyun Chen, Auteur Année de publication : 2010 Article en page(s) : pp 876–886 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Estimating  thermophysical  Vegetable  Oils  Biodiesel  production. Résumé : A fragment-based methodology for estimating the thermophysical properties of triglycerides is presented. In contrast to the commonly practiced functional group estimation approach, the proposed methodology adopts a chemical constituent fragment-based approach to estimate the triglyceride pure component properties from fragment composition and parameters of the fragments. The fragment-specific parameters are obtained from regressing against very limited experimental data for triglycerides available in the literature. The methodology further explores the relationships between carbon atom numbers of fatty acid constituent fragments and the values of these fragment-specific parameters. Additionally, the effect of the double bonds on the values of these fragment-specific parameters is investigated. Based on this methodology, we develop the first-ever pure component thermophysical property databank of triglycerides. We show satisfactory predictions on the properties of triglycerides, fats, and oils. We further show the superiority of this methodology over the traditional functional group approach. The methodology, the derived databank, together with the currently available databanks for fatty acids and corresponding esters, enable efficient and reliable thermophysical property calculations in support of process modeling, simulation, design, and optimization of biodiesel production processes. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900513k [article] Fragment-based approach for estimating thermophysical properties of fats and vegetable oils for modeling biodiesel production processes [texte imprimé] / Ramanathan, Sundaram, Auteur ; Chau-Chyun Chen, Auteur . - 2010 . - pp 876–886. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 2 (Janvier 2010) . - pp 876–886 Mots-clés : Estimating  thermophysical  Vegetable  Oils  Biodiesel  production. Résumé : A fragment-based methodology for estimating the thermophysical properties of triglycerides is presented. In contrast to the commonly practiced functional group estimation approach, the proposed methodology adopts a chemical constituent fragment-based approach to estimate the triglyceride pure component properties from fragment composition and parameters of the fragments. The fragment-specific parameters are obtained from regressing against very limited experimental data for triglycerides available in the literature. The methodology further explores the relationships between carbon atom numbers of fatty acid constituent fragments and the values of these fragment-specific parameters. Additionally, the effect of the double bonds on the values of these fragment-specific parameters is investigated. Based on this methodology, we develop the first-ever pure component thermophysical property databank of triglycerides. We show satisfactory predictions on the properties of triglycerides, fats, and oils. We further show the superiority of this methodology over the traditional functional group approach. The methodology, the derived databank, together with the currently available databanks for fatty acids and corresponding esters, enable efficient and reliable thermophysical property calculations in support of process modeling, simulation, design, and optimization of biodiesel production processes. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900513k

Fragment-based approach for estimating thermophysical properties of fats and vegetable oils for modeling biodiesel production processes / Li Zong in Industrial & engineering chemistry research, Vol. 49 N° 6 (Mars 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 6 (Mars 2010) . - pp. 3022–3023 Titre : Fragment-based approach for estimating thermophysical properties of fats and vegetable oils for modeling biodiesel production processes Type de document : texte imprimé Auteurs : Li Zong, Auteur ; Ramanathan, Sundaram, Auteur ; Chau-Chyun Chen, Auteur Année de publication : 2010 Article en page(s) : pp. 3022–3023 Note générale : Industrial Chemistry Langues : Anglais (eng) Mots-clés : Fragment--Based--Approach--Estimating--Thermophysical--  Fats--Vegetable--Oils--Modeling--Biodiesel--Production--Processes ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100160v [article] Fragment-based approach for estimating thermophysical properties of fats and vegetable oils for modeling biodiesel production processes [texte imprimé] / Li Zong, Auteur ; Ramanathan, Sundaram, Auteur ; Chau-Chyun Chen, Auteur . - 2010 . - pp. 3022–3023. Industrial Chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 6 (Mars 2010) . - pp. 3022–3023 Mots-clés : Fragment--Based--Approach--Estimating--Thermophysical--  Fats--Vegetable--Oils--Modeling--Biodiesel--Production--Processes ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100160v

Predicting thermophysical properties of mono - and diglycerides with the chemical constituent fragment approach / Li Zong in Industrial & engineering chemistry research, Vol. 49 N° 11 (Juin 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 11 (Juin 2010) . - pp. 5479–5484 Titre : Predicting thermophysical properties of mono - and diglycerides with the chemical constituent fragment approach Type de document : texte imprimé Auteurs : Li Zong, Auteur ; Ramanathan, Sundaram, Auteur ; Chau-Chyun Chen, Auteur Année de publication : 2010 Article en page(s) : pp. 5479–5484 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Thermophysical  properties Résumé : A novel chemical constituent fragment approach is used to estimate thermophysical properties for mono- and diglycerides from fragment composition and fragment-specific parameters. The monoglycerol and diglycerol fragment parameters are obtained from regressing against very limited available experimental data for mono- and diglycerides in the literature while fatty acid fragment parameters are obtained from an earlier investigation for estimating thermophysical properties of triglycerides [Zong et al. Ind. Eng. Chem. Res. 2010, 49, 876−886; Zong et al. Ind. Eng. Chem. Res. 2010, 49, 3022−3023]. Built on this methodology, we develop mono- and diglyceride thermophysical property parameters for vapor pressure, enthalpy and Gibbs free energy of vaporization, liquid heat capacity, heat of fusion, enthalpy of formation, and liquid molar volume. Combined with the results of the earlier investigation on triglycerides [Zong et al. Ind. Eng. Chem. Res. 2010, 49, 876−886; Zong et al. Ind. Eng. Chem. Res. 2010, 49, 3022−3023], the derived parameters and the corresponding databank enable reliable and efficient thermophysical property calculations in support of process modeling, simulation, design, and optimization of biodiesel production processes. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901948v [article] Predicting thermophysical properties of mono - and diglycerides with the chemical constituent fragment approach [texte imprimé] / Li Zong, Auteur ; Ramanathan, Sundaram, Auteur ; Chau-Chyun Chen, Auteur . - 2010 . - pp. 5479–5484. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 11 (Juin 2010) . - pp. 5479–5484 Mots-clés : Thermophysical  properties Résumé : A novel chemical constituent fragment approach is used to estimate thermophysical properties for mono- and diglycerides from fragment composition and fragment-specific parameters. The monoglycerol and diglycerol fragment parameters are obtained from regressing against very limited available experimental data for mono- and diglycerides in the literature while fatty acid fragment parameters are obtained from an earlier investigation for estimating thermophysical properties of triglycerides [Zong et al. Ind. Eng. Chem. Res. 2010, 49, 876−886; Zong et al. Ind. Eng. Chem. Res. 2010, 49, 3022−3023]. Built on this methodology, we develop mono- and diglyceride thermophysical property parameters for vapor pressure, enthalpy and Gibbs free energy of vaporization, liquid heat capacity, heat of fusion, enthalpy of formation, and liquid molar volume. Combined with the results of the earlier investigation on triglycerides [Zong et al. Ind. Eng. Chem. Res. 2010, 49, 876−886; Zong et al. Ind. Eng. Chem. Res. 2010, 49, 3022−3023], the derived parameters and the corresponding databank enable reliable and efficient thermophysical property calculations in support of process modeling, simulation, design, and optimization of biodiesel production processes. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901948v