Simultaneous Free Fatty Acid Esterification and Triglyceride Transesterification Using a Solid Acid Catalyst with in Situ Removal of Water and Unreacted Methanol

2009 ◽  
Vol 48 (6) ◽  
pp. 2810-2818 ◽  
Author(s):  
Kaewta Suwannakarn ◽  
Edgar Lotero ◽  
Kanokwan Ngaosuwan ◽  
James G. Goodwin
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Acid Esterification ◽  
Fatty Acid Esterification

scholarly journals The Effect of Co-solvent on Esterification of Oleic Acid Using Amberlyst 15 as Solid Acid Catalyst in Biodiesel Production

2018 ◽  
Vol 156 ◽  
pp. 03002
Author(s):  
Iwan Ridwan ◽  
Mukhtar Ghazali ◽  
Adi Kusmayadi ◽  
Resza Diwansyah Putra ◽  
Nina Marlina ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Fatty Acid ◽  
Free Fatty Acid ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Amberlyst 15 ◽  
Acid Esterification

The oleic acid solubility in methanol is low due to two phase separation, and this causes a slow reaction time in biodiesel production. Tetrahydrofuran as co-solvent can decrease the interfacial surface tension between methanol and oleic acid. The objective of this study was to investigate the effect of co-solvent, methanol to oleic acid molar ratio, catalyst amount, and temperature of the reaction to the free fatty acid conversion. Oleic acid esterification was conducted by mixing oleic acid, methanol, tetrahydrofuran and Amberlyst 15 as a solid acid catalyst in a batch reactor. The Amberlyst 15 used had an exchange capacity of 2.57 meq/g. Significant free fatty acid conversion increments occur on biodiesel production using co-solvent compared without co-solvent. The highest free fatty acid conversion was obtained over methanol to the oleic acid molar ratio of 25:1, catalyst use of 10%, the co-solvent concentration of 8%, and a reaction temperature of 60°C. The highest FFA conversion was found at 28.6 %, and the steady state was reached after 60 minutes. In addition, the use of Amberlyst 15 oleic acid esterification shows an excellent performance as a solid acid catalyst. Catalytic activity was maintained after 4 times repeated use and reduced slightly in the fifth use.

Hydrolyzed rice bran as source of lipids and solid acid catalyst during in situ (trans)esterification

Biofuels ◽  
2017 ◽  
Vol 11 (2) ◽  
pp. 221-227 ◽  
Author(s):  
Sylviana Sutanto ◽  
Alchris Woo Go ◽  
Suryadi Ismadji ◽  
Yi-Hsu Ju
Keyword(s):  
Rice Bran ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst

Translation of lignocellulosic waste to mesoporous solid acid catalyst and its efficacy in esterification of volatile fatty acid

2018 ◽  
Vol 264 ◽  
pp. 198-207 ◽  
Author(s):  
Vineet Aniya ◽  
Alka Kumari ◽  
Debiparna De ◽  
Dubbaka Vidya ◽  
Vinukonda Swapna ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Volatile Fatty Acid ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Lignocellulosic Waste

Development of fatty acid esterification mechanisms in rat small intestine.

1979 ◽  
Vol 237 (5) ◽  
pp. E399 ◽  
Author(s):  
Y F Shiau ◽  
C Umstetter ◽  
K Kendall ◽  
O Koldovsky
Keyword(s):  
Small Intestine ◽  
Fatty Acid ◽  
Total Fatty Acid ◽  
Fetal Programming ◽  
Rat Small Intestine ◽  
Adult Rats ◽  
Major Pathway ◽  
Acid Esterification ◽  
Fatty Acid Esterification

Fatty acid esterification was measured in fetal jejunal and ileal isografts implanted under the kidney capsules of adult host rats and compared to the age-controlled intestine grown in situ. Studies were conducted on the 21st, 35th, 49th, and 63rd postconceptional days, corresponding to prenatal, suckling, weaning, and weaned rats. Substantial fatty acid esterification activity was found in prenatal jejunum but not in ileum. A proximal-distal gradient of fatty acid esterification was observed in all groups grown in situ, but not in isografts. The monoglyceride pathway (MG-P) accounted for about one-third of total fatty acid esterification (TFAE) in jejunum grown in situ and remained constant through the study. In the ileum, MG-P was the major esterification pathway during the first 4 postnatal weeks, but decreased progressively after weaning to become insignificant in adult rats. TFAE fell in the jejunal isografts, whereas it increased in the ileum. MG-P remained as the major pathway in the implanted jejunum and ileum. Our studies suggest that luminal contents are probably the most important modulator for the development and maintenance of intestinal fatty acid esterification, and "fetal programming" manifested by changes in fatty acid esterification mechanisms in the isografts is less important.

scholarly journals The synthesis of sulphonated hypercrosslinked exchange resin for free fatty acid esterification

2019 ◽  
Vol 22 (11-12) ◽  
pp. 761-770 ◽  
Author(s):  
Nurul Asmawati Roslan ◽  
Norhayati Abdullah ◽  
Sumaiya Zainal Abidin
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Exchange Resin ◽  
Acid Esterification ◽  
Fatty Acid Esterification

scholarly journals Biodiesel production by free fatty acid esterification using lanthanum (La3+) and HZSM-5 based catalysts

2013 ◽  
Vol 133 ◽  
pp. 248-255 ◽  
Author(s):  
Sara S. Vieira ◽  
Zuy M. Magriotis ◽  
Nadiene A.V. Santos ◽  
Adelir A. Saczk ◽  
Carla E. Hori ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Biodiesel Production ◽  
Acid Esterification ◽  
Fatty Acid Esterification
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