RISS 검색 - 국내학술지논문 상세보기

다국어 초록 (Multilingual Abstract)

In this study, we looked into the levels and distribution characteristics of harmful substances found in imported coal ash to identify their possible impacts on the environment and human body in the process of recycling and to develop plans for their proper management. To this end, organic pollutants including heavy metals were analyzed from 19 samples of imported coal ash, and their potential impact on the environment was evaluated. To investigate the characteristics of the heavy metal content in the coal ash, a leaching test was conducted, and the result showed that the heavy metal concentrations in the coal ash were far lower than the permitted levels of hazardous substances in designated waste in Korea. In addition, a content analysis showed that the heavy metal content was lower than the level prescribed in the standards for area II levels of soil contamination. Since coal ash is recycled in cement kilns, levels of Pb, Cu, and Cd in the cement kilns were reviewed and compared against permitted levels of those heavy metals in other alternative fuels. Levels of Pb, Cu, and Cd in the coal ash were comfortably within the acceptable limits by Korean standards, but the level of arsenic was close to the limit. Given the fact that arsenic leached from the coal ash recycling process could have an adverse impact on both the environment and the human body, it is therefore necessary to monitor arsenic leaching from coal ash continuously . Levels of other substances that could be contained in coal ash, such as dioxin, PCBs , and PAHs, were also measured. The measurements showed that the levels of these substances were generally low or undetectable; therefore, the environmental impact of organic pollutants from coal ash recycling was considered insignificant.

목차 (Table of Contents)

I. 서 론
II. 연구방법
1. 시료채취
2. 분석항목 및 시험방법
III. 결과 및 고찰

I. 서 론
II. 연구방법
1. 시료채취
2. 분석항목 및 시험방법
III. 결과 및 고찰
1. 석탄재 중 중금속 농도특성
2. 석탄재 중 유기오염물질 함유특성
IV. 결 론
References

참고문헌 (Reference)

1 정다위, "석탄재 중 다이옥신, PCBs, HCB, PAHs, phenols 함량 특성에 관한 연구" 한국폐기물자원순환학회 28 (28): 841-848, 2011

2 고태훈, "바텀애쉬의 유해물질 함량 측정 및 용출특성 평가연구" 한국지반환경공학회 11 (11): 77-83, 2010

3 연진모, "국내 사업장 폐기물 중 유기오염물질의 배출특성 연구 - 금속과 플라스틱 제조공정 및 폐수처리시설 중심으로 -" 한국분석과학회 25 (25): 421-428, 2012

4 Llorens, J. F., "The fate of trace elements in a large coal-fired power plant" 40 (40): 409-416, 2001

5 Wadge, A., "The concentrations and particle size relationships of selected trace elements in fly ashes from UK coalfired power plants and a refuse incinerator" 54 : 13-27, 1986

6 Fytianos, K., "Leachability of heavy metals in Greek fly ash from coal combustion" 24 (24): 477-486, 1998

7 Liao, H. C., "Determination of cadmium, mercury and lead in coal fly ash by slurry sampling electrothermal vaporization inductively coupled plasma mass spectrometry" 54 (54): 1233-1242, 1999

8 Sivakumar, D. S., "Ash ponds and ash disposal systems" Narosa Publishing House 311-325, 1996

9 Snigdha, S., "Analysis of fly ash heavy metal content and disposal in three thermal power plants in India" 85 : 2676-2679, 2006

10 Kim, S. K., "Analyses of Chemical compositions and water leaching tests for bottom ash obtained from thermal power plant" 348-352, 2009