C - Chemistry – Metallurgy – 12 – N
Patent
C - Chemistry, Metallurgy
12
N
C12N 5/00 (2006.01) C02F 3/00 (2006.01) C02F 3/02 (2006.01) C12M 1/04 (2006.01) C12M 3/02 (2006.01) C12N 1/20 (2006.01) C22B 3/18 (2006.01)
Patent
CA 2139762
2139762 9401530 PCTABS00030 A process is provided for modulating the concentration of dissolved gases in liquid media, especially liquid media which are associated with biological materials e.g. aqueous culture media for cells, and waste products such as polluted water and sewage which are characterised by the presence of microorganisms. The process utilises a liquid transfer medium to effect the desired modulation and selecting physical properties of the liquid transfer medium and the manner in which the transfer medium is manipulated to facilitate the transfer of gases. The transfer medium (132) is transferred between zones (112, 114) operated at different temperatures in which the transfer medium exists respectively in the liquid and the gaseous states, gas dissolves in the transfer medium in a zone (114) where the transfer medium is in the liquid state and separation of gas from the transfer medium takes place in a separate zone (112).
Carr Robert Jeffrey Geddes
Tinsley Anne
Fetherstonhaugh & Co.
Public Health Laboratory Service Board Limited
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