Liquid dosimeter with sensitivity in low-kGy range for the characterization of a new module for EB wastewater treatment
Author:
Schaap Lotte Ligaya1ORCID, Teichmann Tobias1ORCID, Poremba Andre1, Besecke Joana Kira1ORCID, Schopf Simone1ORCID, Mattausch Gösta1, von Hauff Elizabeth1ORCID
Affiliation:
1. Fraunhofer Institute for Electron Beam and Plasma Technology FEP , Dresden , Germany
Abstract
Abstract
In recent years, the use of low-energy electrons in various ecological and biotechnological applications has become increasingly relevant. One important application is the treatment of wastewater, wherein highly reactive species produced by water irradiation are used to oxidize pollutants. Low-energy electron irradiation has several advantages, such as minimal demands on radiation protection and electron beam (EB) source dimensions. However, to play into the main advantages of this technology and keep it economically viable, it is necessary to keep the absorbed dose as low as possible. This calls for a liquid dosimeter with sensitivity in the single digit kGy range. An extract from natural Hibiscus sabdariffa (Roselle) has been reported to show a radiochromic effect in this dose range. In the present work, Roselle dosimeter solutions were closely investigated and optimized to characterize a new module for EB wastewater treatment. Upon EB irradiation, the dosimeter solution demonstrated a dose-dependent fading in color, making it useful in the 0.3–7.5 kGy dose range.
Publisher
Walter de Gruyter GmbH
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