Study on mass transfer during heterogeneous reaction of acid liquids and natural carbonate cores Badania transportu masy podczas heterogenicznej reakcji cieczy kwasujących i naturalnych rdzeni węglanowych

2016 ◽  
Vol 1 (5) ◽  
pp. 64-68
Author(s):  
Marek Czupski
Keyword(s):  
Mass Transfer ◽  
Heterogeneous Reaction ◽  
Carbonate Cores

scholarly journals Lattice Boltzmann Simulation of Multicomponent Porous Media Flows With Chemical Reaction

2021 ◽  
Vol 9 ◽  
Author(s):  
Timan Lei ◽  
Kai H. Luo
Keyword(s):  
Mass Transfer ◽  
Porous Media ◽  
Heat And Mass Transfer ◽  
Lattice Boltzmann ◽  
Heterogeneous Reaction ◽  
Fluid Viscosity ◽  
Pore Scale ◽  
Homogeneous Reaction ◽  
Multicomponent Flows ◽  
Coke Combustion

Flows with chemical reactions in porous media are fundamental phenomena encountered in many natural, industrial, and scientific areas. For such flows, most existing studies use continuum assumptions and focus on volume-averaged properties on macroscopic scales. Considering the complex porous structures and fluid–solid interactions in realistic situations, this study develops a sophisticated lattice Boltzmann (LB) model for simulating reactive flows in porous media on the pore scale. In the present model, separate LB equations are built for multicomponent flows and chemical species evolutions, source terms are derived for heat and mass transfer, boundary schemes are formulated for surface reaction, and correction terms are introduced for temperature-dependent density. Thus, the present LB model offers a capability to capture pore-scale information of compressible/incompressible fluid motions, homogeneous reaction between miscible fluids, and heterogeneous reaction at the fluid–solid interface in porous media. Different scenarios of density fingering with homogeneous reaction are investigated, with effects of viscosity contrast being clarified. Furthermore, by introducing thermal flows, the solid coke combustion is modeled in porous media. During coke combustion, fluid viscosity is affected by heat and mass transfer, which results in unstable combustion fronts.

Kinetics for De-Extracellular Matrix(ECM)

MRS Advances ◽  
2018 ◽  
Vol 3 (40) ◽  
pp. 2379-2384 ◽  
Author(s):  
Namsoo P. Kim ◽  
Jihye Kim ◽  
Guikuan Yue ◽  
Diana Cho
Keyword(s):  
Mass Transfer ◽  
Extracellular Matrix ◽  
Deoxyribonucleic Acid ◽  
Deoxycholic Acid ◽  
Reaction Order ◽  
Heterogeneous Reaction ◽  
Transfer Coefficients ◽  
Batch System ◽  
Solid Liquid Interface ◽  
Solid Liquid

ABSTRACTA kinetic model for ECM decellularization with Trypsin and Deoxycholic Acid as reactants in a batch system has been developed. The decellularization mechanism has been analysed by solving a series of ordinary differential equations relating heterogeneous reaction kinetics at the solid/liquid interface to mass transfer of reactant and products. In order to remove the Deoxyribonucleic acid (DNA) of porcine, special emphasis has been given to the surface area for regulating the depth and amount of the penetration of the reagent, the numerical analysis thereof, and the corresponding experiment were carried out. The effect of chemical reaction order, rate constants and mass transfer coefficients on the overall decellularization rate has been analysed and discussed.

Sign in / Sign up

Export Citation Format

Share Document