Yazar "Aydin, M. E." seçeneğine göre listele

Listeleniyor 1 - 3 / 3
  • Küçük Resim Yok
    Öğe
    Heavy metal pollution of surface water sources of Konya Basin
    (IWA PUBLISHING, 2012) Aydin, M. E.; Ozcan, S.; Ucar, S.
    Surface water continuously exposed to numerous environmental pollutants among which the most potentially hazardous are toxic chlorinated compounds, heavy metals, residual chemicals and radioactive compounds. Heavy metals can enter waters through natural and anthropogenic sources. Most heavy metal contaminants originate from different natural sources such as magmatic, sedimentary, and metamorphic rocks. The origin of heavy metals in surface and groundwater are also from anthropogenic sources due to human activities such as industrial production and agriculture. Many of heavy metals have been detected in different environmental compartments. Konya (in Turkey) watershed is a closed basin and has 4.52 billion m3 water capacity. Surface water sources are being polluted by anthropogenic sources such as domestic, agricultural and industrial activities. The determination of the water quality of surface water sources in Konya closed basin is very important. Because Konya closed basin is the biggest closed basin in Turkey and larger part of Turkey is in semi-arid climate area. In this work 32 monitoring stations were selected for investigation of heavy metal pollution within the closed basin. Water samples collected from these monitoring stations were analysed for arsenic (As), cadmium (Cd), lead (Pb), copper (Cu), chromium (Cr), cobalt (Co), nickel (Ni), zinc (Zn), iron (Fe), manganese (Mn), aluminum (Al), beryllium (Be), selenium (Se) using Inductively Coupled Plasma - Mass Spectrometry (ICP-MS). The results obtained were compared with drinking and irrigation waters guidance values given by the Turkish Regulations, the European Community Council Directive 98/83/EC, US Environmental Protection Agency and World Health Organization.
  • Küçük Resim Yok
    Öğe
    An investigation on natural radioactivity from mining industry
    (ACADEMIC JOURNALS, 2011) Esmeray, E.; Aydin, M. E.
    The environmental problem of naturally 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 by-products. Mining originating industries such as the coal industries, petroleum extraction and processing and natural gas, mining enrichment waste, phosphate, etc have been well known and widely investigated. The Environmental Protection Agency (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. Moreover, 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 the concentration of NORM in drinking water supplies. NORM parameter of gross alpha and gross beta were also in this study, seasonal changes in gross alpha and gross beta were investigated. The obtained results showed that, natural activity concentrations of alpha- and beta-emitting radionuclides in all water samples did not exceed World Health Organisation (WHO) and Turkish Standards of Drinking Water (TS 266) recommended levels (Table 1). Concentrations ranging from 0.0062 Bq/l to 0.79 Bq/l and from 0.004 to 0.18 Bq/l were observed for the gross alpha and gross beta activities, respectively. For all samples, the gross beta activities were higher than the corresponding gross alpha activities.
  • Küçük Resim Yok
    Öğe
    Prefiltration of Surface Waters with A Short Length Horizontal Flow Gravel Filter
    (1996) Aydin, M. E.
    A 2.1 m long, 150 mm wide and 350 mm high horizontal-flow gravel filter (HFGF) was operated over an eight month period to improve the quality of a local stream water fed to slow sand filters. The media consisted principally of 5 to 6.3 mm gravel and the unit was operated at nominal flow rates of between 0.5 m/h and 5.0 m/h. Removals of suspended solids varied between a mean of 92 % at 1.0 m/h and 79 % at 5.0 m/h. The removal of total coliforms was as high as 91 % at flow rates of 0.50 and 0.65 m/h and reached a minimum of 77 % at 5.0 m/h. The fecal coliform percentage removals were varied between the 58 % and 87 %. Turbidity removals followed closely those of suspended solids. With a four parameters recorded the percentage removal fell from an initial high level at the lower flow rates to a minimum at 5.0 m/h.