Simulation of the radiation-chemical yields of hydrogen and hydrogen peroxide in concentrated solutions

Abstract

A method based on the use of descriptive kinetics of elementary reactions has been proposed for calculating the yields of H 2 and H 2 O 2 in concentrated solutions. The influence of scavengers on the primary yields was taken into account by introducing into the scheme of radiation chemical transformations addi tional reactions with the radical ion products of water radiolysis that compete with the H 2 and H 2 O 2 forma tion reactions in "spurs." The proposed calculation scheme allows the change in the initial yields in the pres ence of scavengers to be directly included in the general scheme of radiation chemical transformations. The scheme satisfactorily describes the observed yields in concentrated nitrate and nitrite solutions, which form the base medium of liquid radioactive waste to be disposed in geological repositories.

The Green Method in Water Management: Electron Beam Treatment

“…Radiolytic processes, especially those associated with the formation of excited molecules, dissociative capture of radicals, and oxidation, can lead to the formation of cleavage products of C–C bonds as well as bonds between a carbon and a heteroatom. Under anaerobic conditions, radiolysis eliminates gaseous fragmentation products such as H 2 , CO 2 , CH 4 , N 2 , etc. ,− Under aerobic conditions, organic pollutants can undergo sequential cleavages, leading to their complete conversion to CO 2 and H 2 O or, in the presence of heteroatoms, to oxides of the corresponding elements (SI, section S1). Such a process is called mineralization.…”