Hydrodynamic and mass transfer parameter correlations for the rotating disc contactor

2007 ◽  
Vol 50 (2) ◽  
pp. 239-256 ◽  
Author(s):  
W. J. Korchinsky
Keyword(s):  
Mass Transfer ◽  
Rotating Disc ◽  
Transfer Parameter ◽  
Mass Transfer Parameter ◽  
Rotating Disc Contactor

A new model of mass transfer in a rotating disc contactor

1984 ◽  
Vol 39 (4) ◽  
pp. 767-773 ◽  
Author(s):  
Kenichi Suga ◽  
Arunwon Boongorsrang
Keyword(s):  
Mass Transfer ◽  
Rotating Disc ◽  
New Model ◽  
Rotating Disc Contactor

scholarly journals Supercritical CO2 Extraction of Extracted Oil from Pistacia lentiscus L.: Mathematical Modeling, Economic Evaluation and Scale-Up

Molecules ◽  
2020 ◽  
Vol 25 (1) ◽  
pp. 199 ◽  
Author(s):  
Abdelkarim Aydi ◽  
André Wüst Zibetti ◽  
Abdulaal Z. Al-Khazaal ◽  
Aboulbaba ELADEB ◽  
Manef ADBERRABA ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Intact Cell ◽  
Scale Up ◽  
Extraction Yield ◽  
Point Of View ◽  
Significant Variable ◽  
Pistacia Lentiscus ◽  
Economic Point ◽  
Transfer Parameter ◽  
Mass Transfer Parameter

In this study, the extracted oil of Pistacia lentiscus L. the Tunis region was extracted using supercritical carbon dioxide (SC-CO2) extraction containing different major components in the oil such as α-pinene (32%) and terpinene-4-ol (13%). The investigation of the effect of different variables on the extraction yield with 5% level of confidence interval showed that the CO2 pressure was the main significant variable to influence the oil yield. In order to better understand the phenomena, three parameters were considered to adjust all parameters of broken and intact cell (BIC) model: grinding efficiency (G), the internal mass transfer parameter ( k S a 0 ), and the external mass transfer parameter ( k f a 0 ), which were estimated by experimental extraction curves to calculate the diffusion coefficient. From an economic point of view, we found out that the high cost of production of the extracted oil was due to the low mass of extracted oil obtained from this type of plant.

scholarly journals Recovery of ascorbic oxidoreductase from crude extract with an aqueous two-phase system in a perforated rotating disc contactor

2004 ◽  
Vol 47 (5) ◽  
pp. 821-826 ◽  
Author(s):  
Ana Lúcia Figueiredo Porto ◽  
Leonie Asfora Sarubbo ◽  
Keila Aparecida Moreira ◽  
Homero José Farias de Melo ◽  
José Luís Lima-Filho ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Phase Velocity ◽  
Crude Extract ◽  
Separation Efficiency ◽  
Dispersed Phase ◽  
Phase System ◽  
Transfer Coefficients ◽  
Rotating Disc ◽  
Two Phase ◽  
Rotating Disc Contactor

A continuous perforated rotating disc contactor was used to extract the enzyme ascorbic oxidoreductase (E.C.1.10.3.3) from crude extract of Curcubita maxima with an aqueous two-phase system of poly (ethylene glycol) and phosphate salts. The effect of dispersed phase velocity on either protein mass transfer coefficients or separation efficiency at 1, 2 and 3 mL/min was studied. An increase of the mass transfer coefficients was observed with the dispersed phase velocity, while the separation efficiency showed a small decrease with the increase of this parameter. The experimental results obtained during continuous extraction showed that the ascorbic oxidoreductase activity was partitioned preferentially into the salt-rich phase in all conditions studied. The best recovery of enzyme activity was 236%, with a purification factor of 34 in flow rates of 1 mL/min for dispersed phase.

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