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    Comparison of natural radioactivitiy removal methods for drinking water supplies
    (2007) Esmeray E.; Aydin M.E.
    In this study, natural radioactivity removal methods have been compared for present drinking water supplies (privately owned wells or small water works) which have radioactivity values higher than determined standards (WHO & EPA standards). There are several methods known to remove radioactivity from water such as aeration to remove "Rn222", adsorption by granular activated carbon (GAC) to remove "Uranium", ion exchange methods (IX) to remove "Ra266 and Ras", reverse osmosis (RO) to remove "Gross alpha and Gross Beta, Uranium" and various adsorption methods to remove other radionuclides. Main factor of preferring a removal method depends on radioactive material's physical and chemical features. However, the methods have to be tested for different types of water qualities. In this aspect method's designation, setup, cost, advantage/disadvantage, yield ratio, waste, equipment, source water quality has been considered.
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    An investigation on natural radioactivity from mining industry -- 2
    (2006) Esmeray E.; Aydin M.E.
    The environmental problem of natural occurring radioactive materials (NORM) is omnipresent on Earth, and their radioactivity may become concentrated as a result of human activities. Various industries produce concentrated radioactivity in their byproducts: Mining originating industries such as the coal industries, petroleum extraction and processing and natural gas, mining enrichment waste, phosphate, etc. They have been well known and widely investigated. The EPA describes NORM wastes from the mining and processing of three categories of metals: rare earth metals, special application metals and metals produced in bulk quantities by industrial extraction processes. In addition, NORM has a lot of negative effects on the natural resources (water supplies, soils, air, etc.) and living organisms (human, animals, plants, microorganisms etc.). In this study, we investigated NORM levels that originated from mining industry and their effect on drinking water supplies. NORM parameter of gross alpha and gross beta were measured that only a few of them were over the standard levels. © 2006. International Scientific Conference SGEM.