Removal of dissolved oxygen from water: A comparison of four common techniques

Butler, Ian.B., Schoonen, Martin A.A. and Rickard, David T. ORCID: https://orcid.org/0000-0002-4632-5711 1994. Removal of dissolved oxygen from water: A comparison of four common techniques. Talanta 41 (2) , pp. 211-215. 10.1016/0039-9140(94)80110-X

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Abstract

Four common techniques for the removal of dissolved oxygen from water have been examined: boiling at 1 atm, boiling under reduced pressure, purging with N2 and sonication under reduced pressure. After treatment, the residual oxygen in solution was analysed by the Winkler method. Nitrogen purging for 20–40 min at flow rate of 25 mL/s was found to be the most effective oxygen removal method. Boiling at 1 atm was found to be the least effective. None of the techniques evaluated here lead to complete removal of oxygen. The concentration of residual dissolved oxygen after purging for 20–40 minutes with nitrogen is 0.2–0.4 ppm.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Earth and Environmental Sciences
Publisher:	Elsevier
ISSN:	0039-9140
Last Modified:	25 Oct 2022 13:30
URI:	https://orca.cardiff.ac.uk/id/eprint/120019

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