Peracetate Singlet Oxygen Chemistry as a Safe, Simple and Effective  Alternative for Peracetic Acid, 19PEERS

he use of singlet oxygen chemistry for a variety of applications in pulp and paper production shows exciting potential for technical performance, supply logistics, safety and cost. Recently developed technology to provide singlet oxygen chemistry in a liquid peracetate concentrate has shown many performance similarities to peracetic acid (PAA), which has been extensively studied and used in pulp and paper mills. Distilled PAA (dPAA) was developed to provide an industrially practical formulation of PAA at mill scale. Its use was originally motivated by TCF bleaching and then developed to enhance ECF bleaching and papermaking as the industry shifted focus. However, the use of dPAA has been severely challenged by logistical and capex hurdles associated with supplying mills.

The singlet oxygen chemical technology, with a similar chemical profile, shows potential to provide comparable or better technical performance to PAA while eliminating the logistics, safety and cost hurdles of providing dPAA.  The singlet oxygen chemistry, like dPAA, has the potential to, provide post-bleach brightening/whitening and increase color stability. The singlet oxygen chemistry can also provide a variety of benefits in the paper mill such as microbial control, odor control and enhanced OBA response. Laboratory studies presented demonstrate how the proven mill-scale benefits of dPAA can be realized by a similar yet more easily deployable chemistry. 

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