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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국폐기물자원순환학회 한국폐기물자원순환학회지 한국폐기물자원순환학회지 제27권 제8호
발행연도
2010.1
수록면
694 - 699 (6page)

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초록· 키워드

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In this study, biodiesel was produced with oils (fats) extracted from spent coffee grounds by alkaline transesterification reactions using sodium hydroxide as catalyst. For comparison, Jatropha seed (Jatropha curcus), which is typical raw material for biodiesel, was also subjected to the same experimental procedure. As intermediate for biodiesel production the oils were extracted from the two materials by two methods; soxhlet extraction and stirring extraction. In two ways of extraction, 13.4% and 10.7% of oils based on dry weight of material were obtained from spent coffee ground, respectively, and 33.1% of oil was obtained from Jatropha seed by stirring extraction. Although the oils extracted from Jatropha seed were totally converted to biodiesel by alkaline transesterification, the conversion rate to biodiesel was ca. 50% for the oils extracted by soxhlet method and 75% for the oil extracted by stirring method. Irrespective of extraction methods the biodiesel derived from the coffee grounds was mainly composed of palmitic acid (C16 : 0; 40.9%) and stearic acid (C18 : 0; 8.5%) as saturated fatty acid as well as oleic acid (C18 : 1; 14.7%) and linoleic acid (C18 : 2; 32.9%) as unsaturated fatty acid. Compared with biodiesel from Jatropha seed, the feature of the biodiesel from spent coffee ground was relatively high portion of saturated fatty acid (over 50%).

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