I.E. Makarov

Electron-beam treatment of highly-coloured river water

Abstract The possibility of the application of electron beam for the purification of highly-coloured (40–150 degrees) water was studied. The object of the study was water from the Segezha River (Karelia, Russia) used for the supply of a small town of the same name. It was found that irradiation of this water by electron beam to the dose of 1–3 kGy led to the decrease in its colour to 20 degrees and even less. The required dose depends on the season when the water was taken for irradiation; it is higher for autumn and (partially) spring seasons than for winter and (partially) summer periods. It was also found that irradiation considerably accelerates the sedimentation of suspended particles and ensures the necessary disinfection of the water together with the conservation and even the improvement of its other parameters.

Combined electron-beam and adsorption purification of water from mercury and chromium using materials of vegetable origin as sorbents

Abstract Combined electron-beam and adsorption method of purification of water from Hg(II) and Cr(VI) using materials of vegetable origin as sorbents was developed. It consists in the addition of materials of vegetable origin (e.g. cellulose, carboxymethyl cellulose, starch, and wheat flour) into water, subsequent electron-beam irradiation, sedimentation and filtration of additives with captured Hg(II) or Cr(VI). The method is based on the synergistic effect of the combined action of irradiation and sorbent. The best results were obtained with the wheat flour. For example, the addition of 25 mg/I of the flour to the water containing 1 mg/I Hg(II) and irradiation with dose 1.1 kGy upon bubbling inert gas through the system led to the 98% removal of the pollutant. The possible mechanism of the processes causing the purification of water is discussed.

Structure - Properties Interrelationships in Multicomponent Solutions Based on Cellulose and Fibers Spun Therefrom

© 2013 Golova et al., licensee InTech. This is an open access chapter distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Structure Properties Interrelationships in Multicomponent Solutions Based on Cellulose and Fibers Spun Therefrom

Pulse radiolysis detection of Pb(III) chloride complexes

Abstract Pulse radiolysis method is used for the production and the study of Pb(III) chloride complexes in aqueous solutions at different pH. Optical absorption spectra of these complexes are described.