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Effect of free fatty acid on transesterification of waste cooking oil

The presence of high free fatty acids (FFA) in the feedstock is a primary concern in biodiesel production. Waste cooking oil (WCO) is a potential environmentally friendly source, but further research is needed to fully characterize its properties. This study successfully explored the effect of FFA o...

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Main Authors: Lim, H. S., N. M., Hussin, Gaanty Pragas, Maniam
Format: Article
Language:English
Published: Penerbit Universiti Malaysia Pahang 2023
Subjects:
TP Chemical technology
Online Access:http://umpir.ump.edu.my/id/eprint/42524/1/Effect%20of%20Free%20Fatty%20Acid%20on%20Transesterification%20of%20Waste%20Cooking%20Oil.pdf
http://umpir.ump.edu.my/id/eprint/42524/
https://doi.org/10.15282/cst.v3i1.10290
https://doi.org/10.15282/cst.v3i1.10290
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spelling my.ump.umpir.425242024-09-06T08:08:30Z http://umpir.ump.edu.my/id/eprint/42524/ Effect of free fatty acid on transesterification of waste cooking oil Lim, H. S. N. M., Hussin Gaanty Pragas, Maniam TP Chemical technology The presence of high free fatty acids (FFA) in the feedstock is a primary concern in biodiesel production. Waste cooking oil (WCO) is a potential environmentally friendly source, but further research is needed to fully characterize its properties. This study successfully explored the effect of FFA on the transesterification reaction and achieved the conversion of triglycerides in WCO to biodiesel under optimal conditions (molar ratio of oil to methanol 1:9, 2 hours, 65°C, catalyst loading 2.0 wt.% of WCO). The results show that for feedstocks with 0-3% FFA content, methyl ester conversion exceeds 90%, while for feedstocks containing 4-6% FFA, the conversion rate is less than 50%. Biodiesel containing 4–6% FFA undergoes saponification reaction during washing, highlighting the need for pretreatment prior to transesterification. In contrast, 0-3% FFA showed no saponification effect. The physicochemical properties of biodiesel from each FFA% feedstock, including acid value, degree of saponification, viscosity, density, and moisture content, were observed and compared with the ASTM D6751 standard. The results show that the acid value is directly proportional to FFA%, while the saponification value is inversely proportional. This study found that other properties such as viscosity, density, and moisture content were not related to biodiesel quality. In contrast, saponification value testing and GC analysis highlighted the impact of FFA percentage in the feedstock on biodiesel production. Penerbit Universiti Malaysia Pahang 2023-06-15 Article PeerReviewed pdf en cc_by_nc_4 http://umpir.ump.edu.my/id/eprint/42524/1/Effect%20of%20Free%20Fatty%20Acid%20on%20Transesterification%20of%20Waste%20Cooking%20Oil.pdf Lim, H. S. and N. M., Hussin and Gaanty Pragas, Maniam (2023) Effect of free fatty acid on transesterification of waste cooking oil. Current Science and Technology (CST), 3 (1). pp. 57-63. ISSN 2785-8804. (Published) https://doi.org/10.15282/cst.v3i1.10290 https://doi.org/10.15282/cst.v3i1.10290
institution Universiti Malaysia Pahang Al-Sultan Abdullah
building UMPSA Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang Al-Sultan Abdullah
content_source UMPSA Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
Lim, H. S.
N. M., Hussin
Gaanty Pragas, Maniam
Effect of free fatty acid on transesterification of waste cooking oil
description The presence of high free fatty acids (FFA) in the feedstock is a primary concern in biodiesel production. Waste cooking oil (WCO) is a potential environmentally friendly source, but further research is needed to fully characterize its properties. This study successfully explored the effect of FFA on the transesterification reaction and achieved the conversion of triglycerides in WCO to biodiesel under optimal conditions (molar ratio of oil to methanol 1:9, 2 hours, 65°C, catalyst loading 2.0 wt.% of WCO). The results show that for feedstocks with 0-3% FFA content, methyl ester conversion exceeds 90%, while for feedstocks containing 4-6% FFA, the conversion rate is less than 50%. Biodiesel containing 4–6% FFA undergoes saponification reaction during washing, highlighting the need for pretreatment prior to transesterification. In contrast, 0-3% FFA showed no saponification effect. The physicochemical properties of biodiesel from each FFA% feedstock, including acid value, degree of saponification, viscosity, density, and moisture content, were observed and compared with the ASTM D6751 standard. The results show that the acid value is directly proportional to FFA%, while the saponification value is inversely proportional. This study found that other properties such as viscosity, density, and moisture content were not related to biodiesel quality. In contrast, saponification value testing and GC analysis highlighted the impact of FFA percentage in the feedstock on biodiesel production.
format Article
author Lim, H. S.
N. M., Hussin
Gaanty Pragas, Maniam
author_facet Lim, H. S.
N. M., Hussin
Gaanty Pragas, Maniam
author_sort Lim, H. S.
title Effect of free fatty acid on transesterification of waste cooking oil
title_short Effect of free fatty acid on transesterification of waste cooking oil
title_full Effect of free fatty acid on transesterification of waste cooking oil
title_fullStr Effect of free fatty acid on transesterification of waste cooking oil
title_full_unstemmed Effect of free fatty acid on transesterification of waste cooking oil
title_sort effect of free fatty acid on transesterification of waste cooking oil
publisher Penerbit Universiti Malaysia Pahang
publishDate 2023
url http://umpir.ump.edu.my/id/eprint/42524/1/Effect%20of%20Free%20Fatty%20Acid%20on%20Transesterification%20of%20Waste%20Cooking%20Oil.pdf
http://umpir.ump.edu.my/id/eprint/42524/
https://doi.org/10.15282/cst.v3i1.10290
https://doi.org/10.15282/cst.v3i1.10290
_version_ 1822924655406612480
score 13.244413

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