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Carbon Dioxide Absorption into Stirred Emulsions of n‐Alkanes
Author(s) -
Mohsenzadeh Elmira,
Schumpe Adrian
Publication year - 2019
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201800439
Subject(s) - heptane , chemistry , pulmonary surfactant , hexadecane , absorption (acoustics) , emulsion , viscosity , mass transfer coefficient , volume (thermodynamics) , alkane , mass transfer , dodecane , volume fraction , bubble , chemical engineering , chromatography , analytical chemistry (journal) , hydrocarbon , materials science , organic chemistry , thermodynamics , biochemistry , physics , parallel computing , computer science , engineering , composite material
Volumetric mass transfer coefficients k L a for CO 2 absorption into n ‐alkane/water emulsions were determined at oil volume fractions of 0–100 % in a stirred tank at a stirring speed of 1000 min −1 . The oil was n ‐heptane, n ‐hexadecane, or n ‐dodecane. The decrease of k L a with increasing volume fraction of dispersed oil can be uniformly correlated to the emulsion viscosity with the power of −0.72. Only the addition of n ‐heptane caused a strong increase of the mass transfer coefficient. Upon addition of the surfactant sodium dodecyl sulfate to n ‐heptane emulsions, k L a decreased as for the other oils. The increase can therefore be attributed to the spreading of n ‐heptane on the bubble surface enabling gas‐oil contact, whereas spreading is inhibited by the ionic surfactant.