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Ultrasonic assisted oil extraction and biodiesel synthesis of Spent Coffee Ground

Spent Coffee Ground (SCG) was studied as a potential source of oil feedstock for biodiesel production as an alternative waste utilisation instead of being disposed as municipal waste. This study evaluated the ultrasonic assisted oil extraction from SCG, which was followed by biodiesel conversion via...

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Main Authors:	Goh, Brandon Han Hoe, Ong, Hwai Chyuan, Chong, Cheng Tung, Chen, Wei-Hsin, Leong, Kin Yuen, Tan, Shiou Xuan, Lee, Xin Jiat
Format:	Article
Published:	Elsevier 2020
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://eprints.um.edu.my/15298/ https://doi.org/10.1016/j.fuel.2019.116121
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id	my.um.eprints.15298
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spelling	my.um.eprints.152982019-12-16T03:13:20Z http://eprints.um.edu.my/15298/ Ultrasonic assisted oil extraction and biodiesel synthesis of Spent Coffee Ground Goh, Brandon Han Hoe Ong, Hwai Chyuan Chong, Cheng Tung Chen, Wei-Hsin Leong, Kin Yuen Tan, Shiou Xuan Lee, Xin Jiat TJ Mechanical engineering and machinery Spent Coffee Ground (SCG) was studied as a potential source of oil feedstock for biodiesel production as an alternative waste utilisation instead of being disposed as municipal waste. This study evaluated the ultrasonic assisted oil extraction from SCG, which was followed by biodiesel conversion via transesterification. Hexane was found to be the most effective extractant for SCG oil. Soxhlet extraction could obtain maximum SCG oil yield of 12.5% within 3 h whereas the highest SCG oil yield (14.52%) using ultrasonic extraction was obtained at hexane to SCG ratio of 4 mL g−1 and at 30% ultrasonic amplitude for 30 min. The improved oil yield with shorter extraction time was due to the ultrasonic fragmentation on SCG cells, which enhanced the interactions between oil and solvents. Fourier transform infrared analysis showed that the SCG oil possessed suitable functional groups for biodiesel conversion. Then, the SCG oil was successfully converted to biodiesel via ultrasonic assisted transesterification. The optimal FAME yield (97.11%) was achieved with molar ratio of methanol to SCG oil of 30:1, 4 wt% of catalyst concentration, at 30% ultrasonic amplitude and for 3 h. The produced SCG biodiesel has promising properties which adhere to the biodiesel standards but acid value was beyond the permissible limit which could be overcome by utilising as blend feedstock with other commercially available biodiesel. The high calorific value along with low viscosity, density and corrosion properties suggested SCG biodiesel as an interesting and viable option for biodiesel blending. © 2019 Elsevier 2020 Article PeerReviewed Goh, Brandon Han Hoe and Ong, Hwai Chyuan and Chong, Cheng Tung and Chen, Wei-Hsin and Leong, Kin Yuen and Tan, Shiou Xuan and Lee, Xin Jiat (2020) Ultrasonic assisted oil extraction and biodiesel synthesis of Spent Coffee Ground. Fuel, 261. p. 116121. ISSN 0016-2361 https://doi.org/10.1016/j.fuel.2019.116121 doi:10.1016/j.fuel.2019.116121
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Goh, Brandon Han Hoe Ong, Hwai Chyuan Chong, Cheng Tung Chen, Wei-Hsin Leong, Kin Yuen Tan, Shiou Xuan Lee, Xin Jiat Ultrasonic assisted oil extraction and biodiesel synthesis of Spent Coffee Ground
description	Spent Coffee Ground (SCG) was studied as a potential source of oil feedstock for biodiesel production as an alternative waste utilisation instead of being disposed as municipal waste. This study evaluated the ultrasonic assisted oil extraction from SCG, which was followed by biodiesel conversion via transesterification. Hexane was found to be the most effective extractant for SCG oil. Soxhlet extraction could obtain maximum SCG oil yield of 12.5% within 3 h whereas the highest SCG oil yield (14.52%) using ultrasonic extraction was obtained at hexane to SCG ratio of 4 mL g−1 and at 30% ultrasonic amplitude for 30 min. The improved oil yield with shorter extraction time was due to the ultrasonic fragmentation on SCG cells, which enhanced the interactions between oil and solvents. Fourier transform infrared analysis showed that the SCG oil possessed suitable functional groups for biodiesel conversion. Then, the SCG oil was successfully converted to biodiesel via ultrasonic assisted transesterification. The optimal FAME yield (97.11%) was achieved with molar ratio of methanol to SCG oil of 30:1, 4 wt% of catalyst concentration, at 30% ultrasonic amplitude and for 3 h. The produced SCG biodiesel has promising properties which adhere to the biodiesel standards but acid value was beyond the permissible limit which could be overcome by utilising as blend feedstock with other commercially available biodiesel. The high calorific value along with low viscosity, density and corrosion properties suggested SCG biodiesel as an interesting and viable option for biodiesel blending. © 2019
format	Article
author	Goh, Brandon Han Hoe Ong, Hwai Chyuan Chong, Cheng Tung Chen, Wei-Hsin Leong, Kin Yuen Tan, Shiou Xuan Lee, Xin Jiat
author_facet	Goh, Brandon Han Hoe Ong, Hwai Chyuan Chong, Cheng Tung Chen, Wei-Hsin Leong, Kin Yuen Tan, Shiou Xuan Lee, Xin Jiat
author_sort	Goh, Brandon Han Hoe
title	Ultrasonic assisted oil extraction and biodiesel synthesis of Spent Coffee Ground
title_short	Ultrasonic assisted oil extraction and biodiesel synthesis of Spent Coffee Ground
title_full	Ultrasonic assisted oil extraction and biodiesel synthesis of Spent Coffee Ground
title_fullStr	Ultrasonic assisted oil extraction and biodiesel synthesis of Spent Coffee Ground
title_full_unstemmed	Ultrasonic assisted oil extraction and biodiesel synthesis of Spent Coffee Ground
title_sort	ultrasonic assisted oil extraction and biodiesel synthesis of spent coffee ground
publisher	Elsevier
publishDate	2020
url	http://eprints.um.edu.my/15298/ https://doi.org/10.1016/j.fuel.2019.116121
_version_	1654960666370375680
score	13.211869

Ultrasonic assisted oil extraction and biodiesel synthesis of Spent Coffee Ground

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