An algorithm for predicting the hydrodynamic and mass transfer parameters in agitated reactors

2005 ◽  
Vol 114 (1-3) ◽  
pp. 9-31 ◽  
Author(s):  
Romain Lemoine ◽  
Badie I. Morsi
Keyword(s):  
Mass Transfer ◽  
Transfer Parameters

Validity of the Use of the Mass Transfer Parameters Obtained with 1D Column in 3D Systems during Soil Vapor Extraction

2016 ◽  
Vol 142 (6) ◽  
pp. 04016018 ◽  
Author(s):  
Otmane Boudouch ◽  
Daoud Esrael ◽  
Mariem Kacem ◽  
Belkacem Benadda ◽  
Rémy Gourdon
Keyword(s):  
Mass Transfer ◽  
Soil Vapor Extraction ◽  
Vapor Extraction ◽  
Transfer Parameters

scholarly journals Freeze-Drying Kinetics Approach of Soluble Coffee. Mass Transfer Parameters Estimation

2017 ◽  
Vol 62 (1) ◽  
pp. 7-17
Author(s):  
Adina Ghirişan ◽  
◽  
Simion Drăgan ◽  
Vasile Miclăuş ◽  
◽  
...  
Keyword(s):  
Mass Transfer ◽  
Freeze Drying ◽  
Drying Kinetics ◽  
Parameters Estimation ◽  
Transfer Parameters ◽  
Soluble Coffee

The Peculiarities of Mass Transfer in the Surface Layer of Materials under Extreme Heating

2021 ◽  
Vol 1037 ◽  
pp. 449-456
Author(s):  
Andrey V. Brover ◽  
Galina I. Brover ◽  
Olga B. Moysova ◽  
Valeriya E. Yankovskaya
Keyword(s):  
Crystal Structure ◽  
Mass Transfer ◽  
Plastic Deformation ◽  
Laser Heating ◽  
Alloying Elements ◽  
Simultaneous Action ◽  
Surface Layers ◽  
Linear Defects ◽  
Transfer Parameters ◽  
Local Plastic Deformation

Possible causes of mass transfer acceleration of carbon atoms and alloying elements in the surface layers of steels and alloys under extreme heating, under pulsing laser irradiation in particular, are considered. The research shows that the anomaly accelerated mass transfer, including diffusion in particular, in steels and alloys under fast laser heating has a cooperative character and is a result of a simultaneous action of several processes of different physics. It is proved that the carbon atoms mass transfer parameters and alloying elements depend on the scale and the level of emerging tension, relaxation of which goes along with a local plastic deformation, and occurrence of increased number of linear defects in crystal structure.

scholarly journals Comparison of mass transfer parameters inside a USEPA flux hood for two VOCs

2020 ◽  
Vol 81 (7) ◽  
pp. 1445-1451
Author(s):  
Kamila F. Cupertino ◽  
Ademir A. Prata ◽  
Nhat Le-Minh ◽  
Richard M. Stuetz ◽  
Jane M. Santos
Keyword(s):  
Mass Transfer ◽  
Acetic Acid ◽  
Butyric Acid ◽  
Wastewater Treatment Plants ◽  
Direct Methods ◽  
Emission Rates ◽  
Model Compounds ◽  
Transfer Rates ◽  
Area Source ◽  
Transfer Parameters

Abstract Odorous emissions from area sources at wastewater treatment plants have become an environmental issue due to negative impacts on neighboring communities causing annoyance. Enclosure devices (such as dynamic flux chambers) have been used as direct methods to estimate area source emission rates from liquid–gas surfaces. Previously, model compounds have provided information about the internal mass transfer behavior of these sampling devices and the parameters estimated for certain model compounds that can be adapted for other compounds with similar liquid–gas partitioning properties. Acetic acid and butyric acid (both gas-phase-controlled compounds) were compared in order to assess the validity of adapting results from one compound to another. Mass transfer parameters for acetic acid and butyric acid were determined for a USEPA flux hood using a sweep air flow rate of 5 L/min. Mass transfer rates estimated for butyric acid, using the mass transfer parameters of acetic acid, were of the same order of magnitude as the experimental butyric acid mass transfer rates.

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