Dispersed Organic Solvent To Enhance the Overall Gas/Water Mass Transfer Coefficient of Apolar Compounds in the Biological Waste-Gas Treatment. Modeling and Evaluation

1997 ◽  
Vol 13 (4) ◽  
pp. 399-407 ◽  
Author(s):  
M.T. Cesario ◽  
H.L. de Wit ◽  
J. Tramper ◽  
H.H. Beeftink
Keyword(s):  
Mass Transfer ◽  
Organic Solvent ◽  
Transfer Coefficient ◽  
Mass Transfer Coefficient ◽  
Water Mass ◽  
Gas Treatment ◽  
Waste Gas ◽  
Waste Gas Treatment

Mass transfer coefficient of slug flow for organic solvent-aqueous system in a microreactor

2015 ◽  
Vol 32 (6) ◽  
pp. 1037-1045 ◽  
Author(s):  
Ana Jurinjak Tušek ◽  
Iva Anić ◽  
Želimir Kurtanjek ◽  
Bruno Zelić
Keyword(s):  
Mass Transfer ◽  
Organic Solvent ◽  
Transfer Coefficient ◽  
Mass Transfer Coefficient ◽  
Slug Flow ◽  
Aqueous System

Air–water mass transfer and tracer gases in stormwater systems

2007 ◽  
Vol 56 (1) ◽  
pp. 267-275 ◽  
Author(s):  
H.I. Madsen ◽  
J. Vollertsen ◽  
T. Hvitved-Jacobsen
Keyword(s):  
Mass Transfer ◽  
Transfer Coefficient ◽  
Mass Transfer Coefficient ◽  
Water Mass ◽  
Quality Parameter ◽  
Constant Ratio ◽  
Transfer Coefficients ◽  
Tracer Gas ◽  
Reliable Determination ◽  
Transfer Rates

Reaeration is a central quality parameter for the performance of environmental systems such as ponds receiving urban and road runoff. Tracer gases can be used to measure reaeration rates in these systems. The methods comprise injection of a volatile tracer into an environmental system and subsequently measurement of the emission of the volatile tracer. The physical basis of such methods is the existence of a constant ratio between the air–water mass transfer coefficient for oxygen and the corresponding mass transfer coefficient for the volatile tracer gas. This constant ratio is often not clearly defined in the literature due to difficulties in both experimental procedures and handling of data. In this study such methods are evaluated and an experimental procedure and a corresponding data processing procedure for a general and reliable determination of mass transfer rates are presented. Propane is selected as an example of an appropriate tracer gas and the ratio between the mass transfer coefficients of oxygen and propane is determined.

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