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Peroxide bleaching using zeolites Part 1: peroxide decomposition

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posted on 2023-05-26, 10:52 authored by Finnegin, D, Stack, KR, L Dunn
Addition of certain levels of zeolite and sodium citrate to hydrogen peroxide solutions containing manganese decreased the rate of peroxide decomposition. there were differences in the ability of commercially available zeolites to reduce decomposition of peroxide. Addition of small amounts of sodium citrate to a particular zeolite system improved its ability to chelate metal ions. Sodium citrate appears to act as a transfer agent, facilitating the migration of metal ions to the zeolite. However addition of excess zeolite and citrate increase manganese induced peroxide decomposition. If the manganese-oxygen complex that decomposesperoxide under alkaline conditions was allowed to form prior to the addition of eith the zeolite or citrate then the two chelating agents were unable to interact with the complex and prevent decomposition.

History

Publication title

Appita Journal

Volume

51

Article number

3

Number

3

Pagination

219-223

ISSN

1038-6807

Publication status

  • Published

Rights statement

Copyright Copyright 1998 Appita

Repository Status

  • Open

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