Modeling the kinetics of microbial degradation of deicing chemicals in porous media under flow conditions

2012 ◽  
Vol 168 ◽  
pp. 96-106 ◽  
Author(s):  
Markus Wehrer ◽  
Philipp Jaesche ◽  
Kai Uwe Totsche
Keyword(s):  
Porous Media ◽  
Microbial Degradation ◽  
Flow Conditions ◽  
Deicing Chemicals ◽  
Kinetics Of

Analysis of process of emulsions transport in hydrophilic/oleophilic granular porous media driven by capillary force

2018 ◽  
Vol 2 (21) ◽  
pp. 85-101
Author(s):  
Olga Shtyka ◽  
Łukasz Przybysz ◽  
Mariola Błaszczyk ◽  
Jerzy P. Sęk
Keyword(s):  
Porous Media ◽  
Experimental Research ◽  
Granular Media ◽  
Single Phase ◽  
Influential Factor ◽  
Dispersed Phase ◽  
Porous Structures ◽  
Phase Concentration ◽  
Granular Porous Media ◽  
Kinetics Of

The research focuses on the issues concerning a process of multiphase liquids transport in granular porous media driven by the capillary pressure. The current publication is meant to introduce the results of experimental research conducted to evaluate the kinetics of the imbibition and emulsions behavior inside the porous structures. Moreover, the influence of the dispersed phase concentration and granular media structure on the mentioned process was considered. The medium imbibition with emulsifier-stabilized emulsions composed of oil as the dispersed phase in concentrations of 10 vol%, 30 vol%, and 50 vol%, was investigated. The porous media consisted of oleophilic/hydrophilic beads with a fraction of 200–300 and 600–800 μm. The experimental results provided that the emulsions imbibition in such media depended stronger on its structure compare to single-phase liquids. The increase of the dispersed phase concentration caused an insignificant mass decreasing of the imbibed emulsions and height of its penetration in a sorptive medium. The concentrations of the imbibed dispersions exceeded their initial values, but reduced with permeants front raise in the granular structures that can be defined as the influential factor for wicking process kinetics.

Particle Destabilization in Turbulent Pipe Flow

1989 ◽  
Vol 21 (6-7) ◽  
pp. 435-442 ◽  
Author(s):  
B. Döll
Keyword(s):  
Pipe Flow ◽  
Reaction Rate ◽  
Turbulent Pipe Flow ◽  
Cationic Polymers ◽  
Flow Conditions ◽  
Polyelectrolyte Adsorption ◽  
Charge Neutralization ◽  
Silica Suspensions ◽  
Kinetics Of ◽  
Turbulent Flow Conditions

Silica suspensions (pH = 6.8) and three different cationic polymers were used to study the kinetics of charge neutralization by polyelectrolyte adsorption. The experiments were performed in a continuous flow pipe reactor under steady state turbulent flow conditions. The charge neutralization was monitored by electrophoretic mobility (EPM) measurements of the suspended particles as a function of time after polyelectrolyte audition. The results show the dependency of the destabilization reaction rate on flow and polymer characteristics.

Examination by filming of the kinetics of saturation of porous media of diamond and graphite with metallic melts

1988 ◽  
Vol 27 (6) ◽  
pp. 479-482
Author(s):  
Yu. V. Naidich ◽  
G. P. Volk ◽  
L. Yu. Ostrovskaya ◽  
V. M. Chashnik ◽  
I. A. Lavrinenko
Keyword(s):  
Porous Media ◽  
Metallic Melts ◽  
Kinetics Of

scholarly journals Kinetics of electrochemical dissolution of metals in porous media

2019 ◽  
Vol 18 (9) ◽  
pp. 942-947 ◽  
Author(s):  
Matteo Stefanoni ◽  
Ueli M. Angst ◽  
Bernhard Elsener
Keyword(s):  
Porous Media ◽  
Electrochemical Dissolution ◽  
Kinetics Of

A Stirred-Flow Reactor for Investigating the Kinetics of Gaseous Reactions: Application to the Decomposition of Di-t-butyl Peroxide

1961 ◽  
Vol 14 (4) ◽  
pp. 534 ◽  
Author(s):  
MFR Mulcahy ◽  
DJ Williams
Keyword(s):  
Excellent Agreement ◽  
Rate Constant ◽  
Flow Reactor ◽  
Reaction Times ◽  
Static Method ◽  
Flow Conditions ◽  
Gaseous Reaction ◽  
Flow Method ◽  
Butyl Peroxide ◽  
Kinetics Of

The uncertainty regarding temperature and flow conditions which attaches to the conventional flow method of determining the rate of a gaseous reaction can be substantially reduced by using a stirred-flow reactor. The reagents, products, and carrier-gas (if any) are mixed sufficiently vigorously for the composition of the gas in the reactor to be virtually uniform. A reactor designed to achieve the required degree of mixing at pressures of about 1 cmHg and reaction times of the order of 1 sec to 1 min is described. The rate constant of the decomposition of di-t-butyl peroxide was determined over the temperature range 430-550 �K. The values derived on the assumption of complete mixing in the reactor were independent of the degree of conversion and in excellent agreement with those obtained by previous authors using the static method.

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