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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.8
- 수록면
- 470 - 478 (11page)
이용수
초록· 키워드
오류제보하기
Spent coffee grounds (SCG), the residue after brewing coffee beverage, is a promising biodiesel feedstock due to its high oil contents (15‒20%). However, SCG should be pretreated to reduce the high free fatty acid content, which hampers transesterification reaction. To overcome this, we explored a direct transesterification reaction of SCG using ultrasound irradiation and identified the optimal sonication parameters. A high fatty acid methyl ester (FAME) content, up to 97.2%, could be achieved with ultrasound amplitude of 99.2 μm, irradiation time of 10 min, and methanol to oil ratio of 7:1 in the presence of potassium hydroxide concentration of 1.25 wt.%. In addition, we demonstrated that ultrasound irradiation is an efficient method to produce biodiesel from untreated SCG in a short time with less energy than the conventional mechanical stirring method. The physical and chemical properties of the SCG biodiesel met the requirements for an alternative fuel to the current commercial biodiesel.
목차
ABSTRACT
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusions
References
참고문헌 (61)
참고문헌 신청
Ataya F, Dude MA, Ternan M. Acid-catalyzed transesterification of canola oil to biodiesel under single- and two-phase reaction conditions. Energ. Fuels 2007;21:2450-2459.
Thanh LT, Okitsu K, Sadanaga Y, Takenaka N, Maeda Y, Bandow H. Ultrasound-assisted production of biodiesel fuel from vegetable oils in a small scale circulation process. Bioresour. Technol. 2010;101:639-645.
International coffee organization. Coffee market report- November 2018. [Internet]. c 2018 [cited 20 December 2018]. Available from: http://www.ico.org/Market-Report-18-19-e.asp.
Murthy PS, Naidu MM. Sustainable management of coffee industry by-products and value addition- A review. Resour. Conserv. Recycl. 2012;66:45-58.
Martinez-Saez N, Garcia AT, Perez ID, et al. Use of spent coffee grounds as food ingredient in bakery products. Food Chem. 2017;216:114-122.
Thanh LT, Okitsu K, Sadanaga Y, Takenaka N, Maeda Y, Bandow H. Ultrasound-assisted production of biodiesel fuel from vegetable oils in a small scale circulation process. Bioresour. Technol. 2010;101:639-645.
International coffee organization. Coffee market report- November 2018. [Internet]. c 2018 [cited 20 December 2018]. Available from: http://www.ico.org/Market-Report-18-19-e.asp.
Murthy PS, Naidu MM. Sustainable management of coffee industry by-products and value addition- A review. Resour. Conserv. Recycl. 2012;66:45-58.
Martinez-Saez N, Garcia AT, Perez ID, et al. Use of spent coffee grounds as food ingredient in bakery products. Food Chem. 2017;216:114-122.
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UCI(KEPA) : I410-ECN-0101-2020-539-000378869