Enzyme Immobilization on Inorganic Surfaces for Membrane Reactor Applications: Mass Transfer Challenges, Enzyme Leakage and Reuse of Materials

2018 ◽  
Vol 360 (14) ◽  
pp. 2578-2607 ◽  
Author(s):  
Sigyn Björk Sigurdardóttir ◽  
Jonas Lehmann ◽  
Simona Ovtar ◽  
Jean‐Claude Grivel ◽  
Michela Della Negra ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Enzyme Immobilization ◽  
Membrane Reactor ◽  
Enzyme Leakage

scholarly journals NO Separation Characteristics in Integrated Electromigration Membrane Reactor

2020 ◽  
Vol 10 (15) ◽  
pp. 5071
Author(s):  
Zuwu Wang ◽  
Guifen Shen
Keyword(s):  
Mass Transfer ◽  
Transfer Coefficient ◽  
Mass Transfer Coefficient ◽  
Flow Rate ◽  
Total Mass ◽  
Membrane Reactor ◽  
Gas Flow ◽  
Separation Efficiency ◽  
Discharge Voltage ◽  
Gas Flow Rate

An integrated electromigration membrane absorption method has been proposed for the separation of NO from simulated mixed gas. The experiments were conducted to investigate the effect of discharge voltage, gas flow rate, inlet concentrations, and absorbents on the NO separation efficiency and total mass transfer coefficient in the integrated electromigration membrane reactor. The experimental results demonstrated that the NO separation efficiency and total mass transfer coefficient increased with the increase in the applied discharge voltage of the integrated electromigration membrane reactor. Regardless of discharge or not, the separation efficiency of NO continuously decreased with the increase in the gas flow rate and inlet concentration of NO in the experimental process. The total mass transfer coefficient of NO increased first and then decreased with an increase in the gas flow rate, while it decreased with an increase in NO inlet concentration. Compared with the membrane absorption without discharge voltage under the condition tested, at a discharge voltage of 18kV, the NO separation efficiency and the total mass transfer coefficient increased by 48.7% and 9.7 times, respectively.

Understanding the chemical reaction and mass-transfer phenomena in a recirculating enzymatic membrane reactor for green ester synthesis in ionic liquid/supercritical carbon dioxide biphasic systems

2007 ◽  
Vol 43 (2) ◽  
pp. 303-309 ◽  
Author(s):  
Antonia P. de los Ríos ◽  
Francisco J. Hernández-Fernández ◽  
Demetrio Gómez ◽  
Manuel Rubio ◽  
Francisca Tomás-Alonso ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Mass Transfer ◽  
Ionic Liquid ◽  
Supercritical Carbon Dioxide ◽  
Chemical Reaction ◽  
Membrane Reactor ◽  
Ester Synthesis ◽  
Biphasic Systems ◽  
Enzymatic Membrane Reactor ◽  
Enzymatic Membrane

THE EFFECT OF SUBSTRATE MASS TRANSFER LIMITATIONS IN AN IMMOBILIZED ENZYME MEMBRANE REACTOR

1980 ◽  
Vol 7 (1-3) ◽  
pp. 145-157 ◽  
Author(s):  
GUIDO GRECO ◽  
FRANCESCO ALFANI ◽  
MARIA CANTARELLA ◽  
LILIANA GIANFREDA ◽  
ROSARIA PALESCANDOLO ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Membrane Reactor ◽  
Immobilized Enzyme ◽  
Enzyme Membrane Reactor

scholarly journals Jet cutter as tool to immobilize lipase for biodiesel production

2019 ◽  
Author(s):  
Marcelo D'Elia Feliciano ◽  
Ana Silvia Prata Soares ◽  
Marcus Bruno Soares Forte ◽  
Beatriz Travalia
Keyword(s):  
Mass Transfer ◽  
Environmental Impacts ◽  
Enzyme Immobilization ◽  
Contact Area ◽  
Industrial Applications ◽  
Biodiesel Production ◽  
Immobilize Lipase ◽  
Technical Aspects ◽  
Size Of Particles ◽  
Low Rate

The use of lipases as a biocatalyst for industrial applications is an interesting route due to technical aspects but also to reduce environmental impacts caused by the use of chemical catalysts. Gel immobilization of the enzyme allows its reuse and avoids contamination of the product with residual portions of free enzyme. However, a typical technique available for enzyme immobilization is based on dripping driven by gravity which produces big particles and low rate of production. The reduction of size can improve the mass transfer by increasing the contact area. Thus, aiming to increase the rate of particles production and reduce the size of particles, the objective of this work was to encapsulate lipase, using a tool designed to cut the jet produced by pumping, called as Jet Cutter.

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