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논문 기본 정보

자료유형
학술저널
저자정보
양원석 (국립환경과학원) 박호연 (국립환경과학원) 강준구 (국립환경과학원) 이영진 (국립환경과학원) 이영기 (국립환경과학원) 윤영욱 (경남과학기술대학교) 전태완 (국립환경과학원)
저널정보
한국폐기물자원순환학회 한국폐기물자원순환학회지 한국폐기물자원순환학회지 제35권 제7호
발행연도
2018.1
수록면
616 - 626 (11page)

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초록· 키워드

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The quality standards of solid refuse fuel (SRF) define the values for 12 physico-chemical properties, including moisture,lower heating value, and metal compounds, according to Article 20 of the Enforcement Rules of the Act on ResourceSaving and Recycling Promotion. These parameters are evaluated via various SRF Quality Test Methods, but problemsrelated to the heavy metal content have been observed in the microwave acid digestion method. Therefore, these methodsand their applicability need improvement. In this study, the appropriate testing conditions were derived by varying theparameters of microwave acid digestion, such as microwave power and pre-treatment time. The pre-treatment of SRF asa function of the microwave power revealed an incomplete decomposition of the sample at 600 W, and the heavy metalcontent analysis was difficult to perform under 9 mL of nitric acid and 3 mL of hydrochloric acid. The experiments withthe reference materials under nitric acid at 600 W lasted 30 minutes, and 1,000 W for 20 or 30 minutes were consideredoptimal conditions. The results confirmed that a mixture of SRF and an acid would take about 20 minutes to reach 180oC, requiring at least 30 minutes of pre-treatment. The accuracy was within 30% of the standard deviation, with a precisionof 70 ~ 130% of the heavy metal recovery rate. By applying these conditions to SRF, the results for each condition werenot significantly different and the heavy metal standards for As, Pb, Cd, and Cr were satisfied.

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