Absorption of H2S in NaOCl Caustic Aqueous Solution

Document Type

Article

Publication Date

10-1-2001

Abstract

Pilot plant experimental data were collected to study the feasibility of H.S removal from air streams utilizing aqueous solutions. Solutions of NaOCl/NaOH were tested in a packed bed scrubber and found to be effective. An efficiency of 99.2% H.S removal was achieved at a gas flow rate of 790 lb/ft-hr and liquid-gas ratio of 5.06. Sodium hydroxide was found to be the active ingredient in the absorption process. A minimum alkalinity of pH 11 in the scrubbing solution was required for the H.S to be efficiently absorbed in the packed bed scrubber. For gas flow rates up to 2,100 lb/ft hr, the height of a transfer unit (HTU) varied from 1.8 ft to 2 ft with different proportions of NaOCl and NaOH in the solution.

Identifier

0035483123 (Scopus)

Publication Title

Environmental Progress

External Full Text Location

https://doi.org/10.1002/ep.670200313

ISSN

02784491

First Page

175

Last Page

181

Issue

3

Volume

20

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