Disinfection of „Sensitive” Surfaces

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Disinfection of „Sensitive” Surfaces

Journal Title: Safety & Fire Technology - Year 2017, Vol 47, Issue 47

Abstract

Objective: The objective of this paper is to present the methods of disinfection of so-called “sensitive” surfaces, non-susceptible to decontamination processes, using gaseous hydrogen peroxide. Introduction: Technically and technologically, decontamination is a very difficult process, as decontaminated surfaces should be safe for use by people and environment after the process is completed. This concerns mainly rooms, devices, documentation and specialised equipment. Nowadays, rescue teams or military groups face a very high risk of contamination. The system of crisis response in our country has the means and technologies for decontamination using so-called wet methods (the active substance exists in the form of an aqueous solution or an organic mixture) which, however, are unfit for the decontamination of documents (paper materials), specialist equipment and electronics. Irrespective of the aid provided to those injured, the effective decontamination of materials, devices and clothing should also be carried out. This process has to be effective so that secondary contamination is prevented, and should also be able to restore the affected equipment and materials to their original state. One of the practical methods for dealing with this problem involves the application of gaseous (vaporised) hydrogen peroxide and the construction of a mobile decontamination device. Methodology: The methodology for the determination of the biocidal effect of gaseous hydrogen peroxide is based on the following standards: PN-EN 13697, PN-EN 14561, PN-EN 14562. Yeast-like fungi (Candida albicans) and mould (Aspergillus niger) were used as test substances. The impact of the decontamination process on stationery was assessed through the visual inspection of the materials and the quality of their handwriting quality or print. Document scans were compared. Conclusions: Advancements in biotechnology stimulate processes which may replace the technologies currently used as less effective and more harmful to the natural environment. Along with the increase in the number of “users” of biotechnology, genetic engineering, microbiology, molecular biology, etc., there is a greater probability that an uncontrolled release to the environment occurs or biomaterials are used for terrorist or criminal purposes. An urgent need is therefore apparent for the effective and fast eradication of bio-contaminations. The use of vaporous hydrogen peroxide appears to be a viable decontamination method for surfaces which are otherwise resistant to such processes if delivered with traditional methods. The studies revealed inter-material compatibility between stationery, varnish coatings, plastics, and electronic, optical, and optoelectronic components.

Authors and Affiliations

Władysław Harmata, Anna Markowska, Jacek Pirszel

Keywords

disinfection gaseous hydrogen peroxide

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EP ID EP265185
DOI 10.12845/bitp.47.3.2017.2
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