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Mass transfer from a single gas bubble
Author(s) -
Weller K. R.
Publication year - 1972
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450500110
Subject(s) - solubility , bubble , absorption (acoustics) , allowance (engineering) , diffusion , mass transfer , thermodynamics , chemistry , inert gas , gaseous diffusion , mass transfer coefficient , analytical chemistry (journal) , materials science , chromatography , organic chemistry , mechanics , physics , composite material , mechanical engineering , electrode , engineering
Gases covering a wide solubility range were used to measure absorption rates from single bubbles rising freely in water. Absorption rates were not sensitive to any power of the diffusion coefficient and solubility alone proved to be an adequate correlating parameter. Experiments with bubbles containing inert and soluble gas mixtures yielded no evidence for a gas‐film resistance, confirming published theory. Results for the absorption of CO 2 by NaOH solutions correlated well with the theory for pseudo‐first‐order fast reactions, provided allowance was made for a decreasing “physical” solubility of CO 2 with increasing ionic strength of the solutions.