Mass Transfer and Solubility of Hibiscus cannabinus L. Seed Oil in Supercritical Carbon Dioxide

Idris, Sarada; Norhuda, I.; Roslina, R. N.; Ruzitah, M. S.

doi:10.3923/jas.2010.1140.1145

Cited by 8 publications

(2 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At the solid-liquid interface, mass flow by diffusion is equal to mass flow by convection. For these reasons, the model of mass transfer by convection has been used to represent kinetics of the vegetable oil extraction process [9,[13][14][15].…”

Section: Kinetic Modelmentioning

confidence: 99%

Kinetics and Thermodynamics of Oil Extraction fromJatropha curcasL. Using Ethanol as a Solvent

Santos

Martins

Caneschi³

et al. 2015

International Journal of Chemical Engineering

View full text Add to dashboard Cite

In the study the yield and kinetic and thermodynamic parameters of the oil extraction process fromJatropha curcasL. using ethanol as a solvent were evaluated for different temperatures, moisture contents of the solid phase, and particle sizes. The extraction process yield increased with contact time of solid particles with the solvent until reaching equilibrium (saturation of the solvent), for all the temperatures, moisture contents, and average particle sizes. These parameters significantly influenced (95% confidence) the extracted oil yield. A convective mass transfer model was used to simulate the extraction process and estimate the kinetic and thermodynamic parameters. For all conditions evaluated, values of oil yield in the liquid phase close to equilibrium were obtained in approximately 20 min. The variations of enthalpy and entropy were positive, indicating that the process is endothermic and irreversible. Values obtained for the variation in Gibbs free energy showed that the extraction process using ethanol as a solvent is spontaneous and thermodynamically favorable for the moisture content of 0%, where the smaller the average particle size the greater the spontaneity of the process.

show abstract

Section: Kinetic Modelmentioning

confidence: 99%

Kinetics and Thermodynamics of Oil Extraction fromJatropha curcasL. Using Ethanol as a Solvent

Santos

Martins

Caneschi³

et al. 2015

International Journal of Chemical Engineering

View full text Add to dashboard Cite

show abstract

“…The diffusion model based on the mass transfer can be used to explain the effect of ultrasound on the enhancement of the extraction rate. Estimation of diffusion coefficients is important for the determination of mass transfer rates, which can be calculated by fitting the experimental data. − Plots of ln[ C s / ( C s – C t )] versus extraction time for compounds 1 – 3 are shown in Figure , where C s is the equilibrium concentration in mg/L and C t is the concentration at time t (s) in mg/L. The linear regression with the correlation coefficient ( R 2 = 0.95–0.99) was obtained for the extraction of the three compounds.…”

mentioning

confidence: 99%

Ultrasonic-Assisted Extraction of the Botanical Dietary Supplement Resveratrol and Other Constituents of Polygonum cuspidatum

et al. 2012

View full text Add to dashboard Cite

The roots of Polygonum cuspidatum produce several phenolic compounds, including trans-resveratrol (1), trans-piceid (2), and emodin (3), and are a commercial source of the botanical dietary supplement 1. Ultrasonic-assisted extraction technology and conventional shaking extraction procedures were compared for the extraction of 1-3 from P. cuspidatum roots, using 50% ethanol as a food grade solvent. These compounds were extracted successfully, and their mass transfer coefficients were calculated by fitting the experimental results to a model derived from Fick's second law. The results indicated that ultrasonic-assisted extraction had higher mass transfer efficacies and extraction yields for 1-3 as compared with conventional shaking extraction. Under the extraction conditions used (extraction temperature 50 °C; ultrasonic power 150 W), yields of 3.5, 9.2, and 7.8 mg/g were obtained for 1-3, respectively.

show abstract

Oil produced from Ghana cocoa bean for potential industrial applications

Tulashie

Dodoo

Appiah

et al. 2022

Industrial Crops and Products

View full text Add to dashboard Cite

Mass Transfer and Solubility of Hibiscus cannabinus L. Seed Oil in Supercritical Carbon Dioxide

Cited by 8 publications

References 9 publications

Kinetics and Thermodynamics of Oil Extraction fromJatropha curcasL. Using Ethanol as a Solvent

Kinetics and Thermodynamics of Oil Extraction fromJatropha curcasL. Using Ethanol as a Solvent

Ultrasonic-Assisted Extraction of the Botanical Dietary Supplement Resveratrol and Other Constituents of Polygonum cuspidatum

Oil produced from Ghana cocoa bean for potential industrial applications

Contact Info

Product

Resources

About