지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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The recycling of coal bottom ash generated from coal power plants in Korea has been limited due to heterogenous characteristics of the materials. The most common management option for the ash is disposal in landfills (i.e. ash pond) near ocean. The presence of large coarse and fine materials in the ash has prompted the desire to beneficially use it in an application such as fill materials. Prior to reuse application as fill materials, the potential risks to the environment must be assessed with regard to the impacts. In this study, a total of nine test cells with bottom ash samples collected from pretreated bottom ash piles and coal ash pond in a coal-fired power plant were constructed and operated under the field conditions to evaluate the leachability over a period of 210 days. Leachate samples from the test cells were analyzed for a number of chemical parameters (e.g., pH, salinity, electrical conductance, anions, and metals). The concentrations of chemicals detected in the leachate were compared to appropriate standards (drinking water standard) with dilution attenuation factor, if possible, to assess potential leaching risks to the surrounding area. Based on the leachate analysis, most of the samples showed slightly high pH values for the coal ash contained test cells, and contained several ions such as sodium, potassium, calcium, magnesium, chloride, sulfate, and nitrate in relatively large quantities. Three elements aluminum, boron, and barium) were commonly detected above their respective detection limits in a number of leachate samples, especially in the early leaching period of time. The results of the test cell study indicate that the pollutants in the leachate from the coal ash test cells were not of a major concern in terms of leaching risk to surface water and groundwater under field conditions as fill materials. However, care must be taken in extending these results to actual applications because the results presented in this study are based on the limited field test settings and time frame. Structural characteristics and analysis for coal bottom ash may be warranted to apply the materials to actual field conditions.
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참고문헌 (31)
참고문헌 신청
Andrade L.B. / 2007 / Aspects of moisture kinetics of coal bottom ash in concrete / Cement and Concrete Research 37 (2) : 231 ~ 241
Canpolat, F. / 2004 / Use of zeolite, coal bottom ash and fly ash as replacement materials in cement production / Cement and Concrete Research 34 : 731 ~ 735
Flaten, TP. / 1987 / Geographical associations between aluminum in drinking water and dementia, Parkinsons disease and amyotrophic lateral scoliosis in Norway / Trace Elemen
Flaten, TP. / 2001 / Aluminium as a risk factor in Alzheimer’s disease, with emphasis on drinking water / Brain Research Bulletin 55 (2) : 187 ~ 196
Izquierdo Maria / 2008 / Comparison between laboratory and field leachability of MSWI bottom ash as a road material / Science of The Total Environment 389 (1) : 10 ~ 19
Canpolat, F. / 2004 / Use of zeolite, coal bottom ash and fly ash as replacement materials in cement production / Cement and Concrete Research 34 : 731 ~ 735
Flaten, TP. / 1987 / Geographical associations between aluminum in drinking water and dementia, Parkinsons disease and amyotrophic lateral scoliosis in Norway / Trace Elemen
Flaten, TP. / 2001 / Aluminium as a risk factor in Alzheimer’s disease, with emphasis on drinking water / Brain Research Bulletin 55 (2) : 187 ~ 196
Izquierdo Maria / 2008 / Comparison between laboratory and field leachability of MSWI bottom ash as a road material / Science of The Total Environment 389 (1) : 10 ~ 19
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