Mass transfer kinetics and diffusion coefficient estimation of bioinsecticide terpene ketones in LDPE films obtained by supercritical CO2-assisted impregnation

2017 ◽  
Vol 134 (48) ◽  
pp. 45558 ◽  
Author(s):  
María Laura Goñi ◽  
Nicolás Alberto Gañán ◽  
Raquel Evangelina Martini ◽  
Miriam Cristina Strumia
Keyword(s):  
Mass Transfer ◽  
Diffusion Coefficient ◽  
Supercritical Co2 ◽  
Coefficient Estimation ◽  
Mass Transfer Kinetics ◽  
And Diffusion

scholarly journals Mass Transfer and Diffusion Coefficient of ᴅ-Allulose during Osmotic Dehydration

2017 ◽  
Vol 3 (2) ◽  
Author(s):  
Mulyana Hadipernata ◽  
Masahiro Ogawa
Keyword(s):  
Mass Transfer ◽  
Diffusion Coefficient ◽  
Room Temperature ◽  
Sucrose Solution ◽  
Osmotic Dehydration ◽  
Potential Effect ◽  
Sugar Solution ◽  
Mass Transfer Kinetics ◽  
Osmotic Solution ◽  
And Diffusion

This study was undertaken to identify the effect of ᴅ-allulose and sucrose solution on mass transport phenomena and diffusion coefficient of sugar solution. Potato samples were immersed in sugar osmotic solution (20% w/v) at room temperature (20°C). The mass transfer kinetics was measured at 30 min, 1 h, 2 h, 4 h, 6 h, 8 h and 16 h. The optimum value of ᴅ-allulose content in sample after immersion with ᴅ-allulose solution was higher compared with sucrose content in sample after immersion with sucrose solution. Also, ᴅ-allulose has higher diffusion coefficient compared with sucrose. Diffusion coefficient of ᴅ-allulose and sucrose were 6.43 x 10-10m2s-1 and 2.83 x 10-10m2s-1, respectively. ᴅ-Allulose has potential effect to accelerate an ingredient movement into the food materials. The acceleration movement of ingredients such as ᴅ-allulose into the food materials may be useful in food processing and preservation such as curing process of meat and fish.

scholarly journals Solubility and diffusion coefficient of supercritical CO2 in polystyrene dynamic melt

e-Polymers ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 659-672
Author(s):  
Long Wang ◽  
Xingyuan Huang ◽  
Duyang Wang
Keyword(s):  
Diffusion Coefficient ◽  
Numerical Calculation ◽  
Calculation Method ◽  
Supercritical Co2 ◽  
Constant Pressure ◽  
Experimental Results ◽  
Experimental Device ◽  
Different Temperatures ◽  
Numerical Calculation Method ◽  
And Diffusion

AbstractThe solubility and diffusion coefficient of supercritical CO2 in polystyrene (PS) dynamic melt were studied by using a new constant pressure experimental device. By comparing the experimental results with those of other researchers, the validity of the experimental device and the reliability of the calculated results are verified. The solubility and diffusion coefficient of supercritical CO2 in polystyrene dynamic melts at different temperatures and pressures were obtained. The numerical calculation method, dissolution process, and experimental results are analyzed and compared with that of the static melt. Finally, the effects of stirring speed, pressure, and temperature fluctuation on the solubility and diffusion coefficient are also analyzed.

Supercritical CO2 extraction of oil from seeds of six grape cultivars: Modeling of mass transfer kinetics and evaluation of lipid profiles and tocol contents

2014 ◽  
Vol 94 ◽  
pp. 71-80 ◽  
Author(s):  
Luca Fiori ◽  
Vera Lavelli ◽  
Kurabachew Simon Duba ◽  
Pedapati Siva Charan Sri Harsha ◽  
Hatem Ben Mohamed ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Supercritical Co2 ◽  
Lipid Profiles ◽  
Supercritical Co2 Extraction ◽  
Mass Transfer Kinetics ◽  
Grape Cultivars

scholarly journals The Effect of Particle Drag and Wall Absorption on Mass Transfer in Concentric Annulus Flows

2011 ◽  
Vol 10 (1) ◽  
pp. 1-13
Author(s):  
B. Umadevi ◽  
Dinesh P.A. ◽  
Indira R. Rao ◽  
Vinay C.V.
Keyword(s):  
Mass Transfer ◽  
Diffusion Coefficient ◽  
Diffusion Coefficients ◽  
Dispersion Model ◽  
Transport Coefficients ◽  
Time Dependent ◽  
Exchange Coefficient ◽  
Concentric Annulus ◽  
Annular Gap ◽  
And Diffusion

The effects of the irreversible boundary reaction and the particle drag on mass transfer are studied analytically in concentric annulus flows. The solution of mathematical model, based on the generalized dispersion model brings out the mass transport following by the insertion of catheter on an artery in terms of the three effective transport coefficients, viz., the exchange, convection and diffusion coefficient. A general expression is derived which shows clearly the time dependent nature of the coefficients in the dispersive model. The complete time dependent expression for the exchange coefficient is obtained explicitly and independent of velocity distribution in the flow; however it does depend on the initial solute distribution. Because of the complexity of the problem only asymptotic large time evaluations are made for the convective and diffusion coefficients, but these are sufficient to give the physical insight into the nature of the problem of the effects of drag and absorption parameters. It is found that as absorption parameter increases exchange and convection coefficients will be enhanced, but diffusion coefficient will be reduced. After certain period of time exchange coefficient will be constant for different values annular gap. As the drag parameter increases convection and diffusion coefficients will be reduced. With the enhancement of catheter radius i.e., the annular gap will be reduced then the convection and diffusion coefficients will be decreased.

MASS TRANSFER AND DIFFUSION COEFFICIENT DETERMINATION IN THE WET AND DRY SALTING OF MEAT

1998 ◽  
Vol 16 (9-10) ◽  
pp. 2095-2115 ◽  
Author(s):  
E. Sabadini ◽  
B. C. Carvalho ◽  
P.J do A. Sobral ◽  
M.D. Hubinger
Keyword(s):  
Mass Transfer ◽  
Diffusion Coefficient ◽  
And Diffusion

Solubility and diffusion coefficient of supercritical-CO2 in polycarbonate and CO2 induced crystallization of polycarbonate

2014 ◽  
Vol 95 ◽  
pp. 35-43 ◽  
Author(s):  
Ying Sun ◽  
Miki Matsumoto ◽  
Kota Kitashima ◽  
Masashi Haruki ◽  
Shin-ichi Kihara ◽  
...  
Keyword(s):  
Diffusion Coefficient ◽  
Supercritical Co2 ◽  
And Diffusion ◽  
Induced Crystallization
Sign in / Sign up

Export Citation Format

Share Document