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Optimization of Oxygen Transfer through Membrane Diffusers for Biological Sweetening of Biogas
Author(s) -
Rodriguez G.,
Dorado A. D.,
Bonsfills A.,
Gabriel D.,
Gamisans X.
Publication year - 2013
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.201200603
Subject(s) - diffuser (optics) , oxygen , membrane , hydrogen sulfide , chemistry , biogas , chemical engineering , pollutant , waste management , organic chemistry , biochemistry , light source , physics , sulfur , optics , engineering
Biological techniques for the removal of gaseous pollutants such as hydrogen sulfide (H 2 S) have proved to be effective, environmentally friendly, and economically viable. However, when high concentrations of H 2 S are treated, the process is severely restricted by the oxygen deficit in the liquid phase. The oxygen transfer efficiency provided by a membrane diffuser is evaluated under typical pressure and salinity conditions used for the biological treatment of H 2 S in biogas. The optimal operating parameters for enhanced oxygen transfer were determined. The addition of pure oxygen with a membrane diffuser to increase the oxygen transfer rate and the use of a nonaqueous phase to improve oxygen transfer in a bioscrubber system are also evaluated.