Thermophysical Properties of Pure Substances in the Context of Sustainable High Pressure Food Processes Modelling

Fornari, Tiziana; Stateva, Roumiana P.

doi:10.1007/978-3-319-10611-3_4

Cited by 7 publications

(9 citation statements)

References 78 publications

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“…Such differences in solubilities and nonconsistency of data are generally caused by impurities in solute and/or solvent; improper calibrations of pressure, temperature, and analytical equipment; use of sampling techniques with different precisions; , and technical variations in experimental setups . Minimization of potential sources of errors and standardization of experimental and sampling procedures will greatly help in generating consistent, accurate, and reliable solubility and phase equilibrium data.…”

Section: Discussionmentioning

confidence: 99%

Supercritical Carbon Dioxide Separation of Carboxylic Acids and Phenolics from Bio-Oil of Lignocellulosic Origin: Understanding Bio-Oil Compositions, Compound Solubilities, and Their Fractionation

Maqbool

Hobson

Dunn

et al. 2017

Ind. Eng. Chem. Res.

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Bio-oil produced from the thermochemical treatment of lignocellulosic biomass is increasingly recognized as a potentially abundant source of renewable chemicals and fuels. Single ring phenolics and low molecular weight carboxylic acids are significant constituent compound groups found in bio-oil and are important end products or intermediate commodity chemicals. Fractionation of bio-oil using supercritical fluids (usually with CO2 as a solvent) is a relatively new process being investigated worldwide at both laboratory and pilot scales. Solubility data associated with supercritical carbon dioxide (scCO2) and the many chemical compounds in the complex bio-oil mixture are required to predict the extraction behavior of different bio-oil compounds. This article starts with a review of the composition of bio-oil in terms of the phenolic and low molecular weight carboxylic acid fractions which are potentially of commercial interest. Binary solubility data of major compounds in these bio-oil fractions with supercritical CO2 are summarized and discussed. Results from previously reported studies in which scCO2 is used as a solvent to recover bio-oil fractions are reviewed and collated. Density and temperature-based Chrastil type models are developed using available data for the solubility in scCO2 of some of the major bio-oil compounds. Finally, extraction of compounds from the complex bio-oil mixture is discussed in terms of the trends predicted by the respective individual binary solubility models.

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Section: Discussionmentioning

confidence: 99%

Supercritical Carbon Dioxide Separation of Carboxylic Acids and Phenolics from Bio-Oil of Lignocellulosic Origin: Understanding Bio-Oil Compositions, Compound Solubilities, and Their Fractionation

Maqbool

Hobson

Dunn

et al. 2017

Ind. Eng. Chem. Res.

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“…As shown in Figure , the extraction yields of kaempferol, ferulic acid, ligustilide, Z -butylidenephthalide, and E -butylidenephthalide increased as the extraction time increased from 15 to 120 min under each operating condition. In supercritical fluid extraction technology, extraction time is one of the most important parameters because the analysis of the extraction process is conducted based on the whole extraction curve (yield vs extraction time), which provides information for the time needed to realize the advantageous and economical extraction process. , The target substance recovery at the highest rate with the shortest time can be observed, and thus the recovery yield efficiency information of target substances was obtained. Figure shows that the amounts of kaempferol, ferulic acid, ligustilide, Z -butylidenephthalide, and E -butylidenephthalide increased significantly until 60 min.…”

Section: Resultsmentioning

confidence: 99%

Extraction of Functional Components from Freeze-Dried Angelica furcijuga Leaves Using Supercritical Carbon Dioxide

et al. 2022

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Angelica furcijuga (A. furcijuga), as a material for traditional Chinese medicine, has been widely used in Asian countries, such as China, Korea, and Japan, for several centuries owing to its therapeutic effects. In this study, A. furcijuga leaves were used as starting materials to extract functional substances using supercritical carbon dioxide (SC-CO2) at pressure and temperature ranges of 20–40 MPa and 40–80 °C, respectively. The extraction process was performed in a semibatch-type system with extraction times of 15–120 min. The high-performance liquid chromatography analysis indicated that kaempferol, ferulic acid, ligustilide, and butylidenephthalide as selected functional substances were successfully extracted under these operating conditions. An operating pressure of 30 MPa with an extraction time of 60 min seems to be an appropriate pressure to extract functional components from A. furcijuga leaves. The Hansen solubility parameter values and statistical analysis showed that SC-CO2 with 10% ethanol addition is a feasible tool to isolate these selected functional substances from the A. furcijuga matrix.

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“…The perfect thermodynamic model would be the one that employs easily measured physical properties to predict phase equilibria at all conditions and is, in addition, theoretically based. Nevertheless, till present no current model satisfies completely those requirements, as discussed by Fornari and Stateva (2015).…”

Section: 32thermodynamic Modelsmentioning

confidence: 99%

“…The data produced by the TMF is used as a basis for developing flowsheets of biofuel processes, and is an essential component of the consequent economic evaluation, sustainability and environmental analysis of the latter that can save time and money, because it will advise which alternative solutions are promising and are worth investing in (Fornari and Stateva, 2015).…”

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confidence: 99%

Challenges in the Modeling of Thermodynamic Properties and Phase Equilibrium Calculations for Biofuels Process Design

Stateva

Cholakov

2020

Process Systems Engineering for Biofuels Development

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Modeling phase equilibria of biofuel mixtures requires reliable thermodynamic models and knowledge of the thermophysical properties of the pure compounds involved.The Chapter outlines specific challenges of biofuels process design within the circular transformation of alternative blended feed stocks (increasingly including biowastes),which has to produce also a variety of high added value products by flexible production schemes.Experimental phase equilibria and property data of biofuels components are scarce and often cannot be measured. Prediction methods for the latter, if they exist, have to be expertly selected. When they are not available, new methods, taking into account the influence of the uncertainties in the estimated thermodynamic properties required on the quality of the phase equilibria calculations, have to be developed. In this context the Chapter discusses thermodynamic modeling, property data, chemical structureproperty relationships, molecular modeling, etc., as relevant to integrated process and product design of future smart biorefineries.

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Thermophysical Properties of Pure Substances in the Context of Sustainable High Pressure Food Processes Modelling

Cited by 7 publications

References 78 publications

Supercritical Carbon Dioxide Separation of Carboxylic Acids and Phenolics from Bio-Oil of Lignocellulosic Origin: Understanding Bio-Oil Compositions, Compound Solubilities, and Their Fractionation

Supercritical Carbon Dioxide Separation of Carboxylic Acids and Phenolics from Bio-Oil of Lignocellulosic Origin: Understanding Bio-Oil Compositions, Compound Solubilities, and Their Fractionation

Extraction of Functional Components from Freeze-Dried Angelica furcijuga Leaves Using Supercritical Carbon Dioxide

Challenges in the Modeling of Thermodynamic Properties and Phase Equilibrium Calculations for Biofuels Process Design

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