Iatsenko A. Protection of groundwater from pollutions of uranium compounds using permeable barriers

The thesis is devoted to development of highly-porous sorption-reduction iron-containing materials in composition of permeable reactive barriers for increasing the protection of groundwater against pollution of suspected uranium compounds in places of storage of waste of hydrometallurgical processing of uranium ores. It was established the type and degree of influence of pH of the aqueous environment, composition of iron-containing materials, man-made and natural complexing agents on the process of sorption-reduction recovery of uranium (VI) from aqueous solutions. New iron-containing sorption-reduction materials using highly-porous inert substrate were developed and proposed technological scheme of their production using waste of foam-glass production. According to investigation of influence of surfactant polyvinyl alcohol on the rheological properties of glass-containing dispersions montmorillonite it was established the possibility of correction of structural and mechanical properties of highly-porous glass-ceramic barrier that can be prepared by duplication structure of polymer matrix method. Optimization of synthesis process of highly-porous glass-ceramic substrate that can be obtained by foaming was carried out. It was selected the model that best describes the process. It was established that use of highly-porous glass-ceramic materials as inert barriers of sorption-reduction iron-containing coating allow significantly increase the duration of the protective effect of load of permeable barriers. Highly-porous iron-containing materials were used for developing of permeable reactive barrier, which was built near the waste storage of enrichment of uranium ore"Shcherbakivsky", city Zhovti Vody.