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Oxidation of sodium sulphide in a foam bed contactor

✍ Scribed by Ashok Bhaskarwar; R. Kumar

Publisher: Elsevier Science
Year: 1984
Tongue: English
Weight: 533 KB
Volume: 39
Category: Article
ISSN: 0009-2509
DOI: 10.1016/0009-2509(84)80072-x

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✦ Synopsis

Oxidation of sodium sulphide to sodium thiosulphate has been experimentally investigated in a foam bed contactor using air as oxidizing medium. The variables studied are supertick air velocity, initial aulphide. wnwntration, height of the foam bed and the nature of the surfactant. The results indicate that the conversion increases with the increase in the superficial air velocity and initial sulphide concentration. The nature of the surfactant has considerable influence on the conversion, even when their surface resistance is negligible. When sodium dodecyl sulphate is used as a surfactant, the conversion decreases as the foam height increases. Opposite trend has heen observed when octyl phenoxy polyethoxyethanol is used. The apparently contradictory results are satisfactorily explained on the basis of a simplified single stage model of a foam bed cootactor.

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