Mass Transfer Coefficients for CO2Absorption into Aqueous Ammonia Solution Using a Packed Column

2011 ◽  
Vol 50 (17) ◽  
pp. 10168-10175 ◽  
Author(s):  
Qing Zeng ◽  
Yincheng Guo ◽  
Zhenqi Niu ◽  
Wenyi Lin
Keyword(s):  
Mass Transfer ◽  
Aqueous Ammonia ◽  
Packed Column ◽  
Ammonia Solution ◽  
Aqueous Ammonia Solution ◽  
Transfer Coefficients ◽  
Mass Transfer Coefficients

Henry's constants and mass transfer coefficients of halogenated organic pollutants in an air stripping packed column

1998 ◽  
Vol 38 (6) ◽  
pp. 287-294 ◽  
Author(s):  
Pen-C. Chiang ◽  
Chung-H. Hung ◽  
J. C. Mar ◽  
E. E. Chang
Keyword(s):  
Mass Transfer ◽  
Methylene Chloride ◽  
Packed Column ◽  
Transfer Coefficients ◽  
Chlorinated Organic Compounds ◽  
Air Stripping ◽  
Mass Transfer Coefficients ◽  
Equilibrium Partition ◽  
Henry's Constants ◽  
Chlorinated Organic

Both Henry's constants and volumetric mass transfer coefficients (KLa) of eight priority chlorinated organic compounds including 1,1-dichloroethene, methylene chloride, chloroform, carbon tetrachloride, 1,1,1-trichloroethane, trichloroethylene, tetrachloroethylene, and 1,4-dichlorobenzene in an air stripping packed column were investigated in this study. The liquid and gas phase EPICS (Equilibrium Partition in Closed System) and direct calculating methods were applied to determine the Henry's constants of VOCs. The interference of co-solute on Henry's constants was also investigated. Experimental results indicated that decrease in Henry's constants of VOCs was observed in the presence of humic acid but no apparent effect on Henry's constants was detected when there was NaCl and surfactant in solution. Four different configurations of packing media including Intalox Saddle, Super Intalox Saddle, Telleret, and Hedgehog made of polypropylene were respectively packed in the air stripping tower and investigated in the study. The dependence of hydraulic loading, air-water ratio, and configurations of packing media on mass transfer coefficients of VOCs was discussed.

A Method for Estimating Mass Transfer Coefficients in a Packed Column Using Reactive Absorption Data

2005 ◽  
Vol 70 (3) ◽  
pp. 383-402
Author(s):  
Valery A. Danilov ◽  
Il Moon
Keyword(s):  
Experimental Data ◽  
Mass Transfer ◽  
Optimization Technique ◽  
Packed Column ◽  
Effective Area ◽  
Transfer Coefficients ◽  
Mass Transfer Coefficients ◽  
Model Calculations ◽  
Unit Model ◽  
Reactive Absorption

This paper is devoted to the development of a new method for estimating mass transfer coefficients and effective area in packed columns in the case of reactive absorption. The method is based on a plug-flow model of reactive absorption of carbon dioxide with sodium hydroxide solution. The parameter estimation problem is solved using an optimization technique. Some mass transfer parameters are found to be correlated. Global sensitivity analysis by Sobol's technique showed that the unit model with the defined objective function is sensitive to the estimated parameter. Case studies of reactive absorption with different packings illustrate application of the proposed method for estimating mass transfer coefficients and effective area from column operation data. The model calculations are compared with experimental data obtained by other authors. The concentration profiles calculated by the unit model with the estimated parameters are shown to match well with experimental profiles from literature. A good agreement between estimated values and experimental data from literature confirms the applicability of this method.

Mass Transfer Coefficients for CO2Absorption into Aqueous Ammonia Using Structured Packing

2014 ◽  
Vol 53 (14) ◽  
pp. 6185-6196 ◽  
Author(s):  
Wenbin Li ◽  
Xingjian Zhao ◽  
Botan Liu ◽  
Zhongli Tang
Keyword(s):  
Mass Transfer ◽  
Aqueous Ammonia ◽  
Transfer Coefficients ◽  
Mass Transfer Coefficients ◽  
Structured Packing

Hydrodynamics and mass transfer coefficients for a modified Raschig ring packed column

2014 ◽  
Vol 50 (10) ◽  
pp. 1385-1392 ◽  
Author(s):  
I. Mamaliga ◽  
D. Sidor ◽  
C. Condurat ◽  
E. T. Iacob Tudose
Keyword(s):  
Mass Transfer ◽  
Packed Column ◽  
Transfer Coefficients ◽  
Mass Transfer Coefficients ◽  
Raschig Ring

The investigation of mass transfer coefficients in a pulsed regular packed column applying SiO2 nanoparticles

2017 ◽  
Vol 176 ◽  
pp. 15-22 ◽  
Author(s):  
Ensiyeh Hosseini Moghadam ◽  
Hossein Bahmanyar ◽  
Fatemeh Heshmatifar ◽  
Maryam kasaie ◽  
Hessam Ziaei-Azad
Keyword(s):  
Mass Transfer ◽  
Packed Column ◽  
Sio2 Nanoparticles ◽  
Transfer Coefficients ◽  
Mass Transfer Coefficients
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