The in-process removal of sterol glycosides by ultrafiltration in biodiesel production
Minor components found in biodiesel can affect its stability and cold flow properties. Without extensive post treatments, trace compounds such as sterol glycosides (SG) can remain at unacceptable levels in finished biodiesel fuels. This study proposes to remove SG from reacted Fatty Acid Methyl Este...
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| Format: | Article |
| Language: | English |
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Alpha Creation Enterprise
2017-03-01
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| Series: | Biofuel Research Journal |
| Subjects: | |
| Online Access: | http://www.biofueljournal.com/article_43390_cd8e62c9782aa78b90f13cd875961694.pdf |
| _version_ | 1797243561877438464 |
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| author | André Y. Tremblay Alessandro Montpetit |
| author_facet | André Y. Tremblay Alessandro Montpetit |
| author_sort | André Y. Tremblay |
| collection | DOAJ |
| description | Minor components found in biodiesel can affect its stability and cold flow properties. Without extensive post treatments, trace compounds such as sterol glycosides (SG) can remain at unacceptable levels in finished biodiesel fuels. This study proposes to remove SG from reacted Fatty Acid Methyl Ester (FAME) mixtures using ultrafiltration. Degummed soybean oil was transesterified using methanol and a catalyst (sodium methoxide). The mixtures were immediately ultrafiltered after the reaction and the FAMEs from the retentate and permeate were analyzed for SG. The highest separation for SG (86 %) was obtained when the reaction conditions were 0.7 wt.% catalyst and 4:1 MeOH:Oil ratio. The lowest separation (0%) was observed at 0.3 wt.% catalyst and 4:1 MeOH:Oil ratio. The higher separations were explained by the deprotonation of the hydroxyl groups on SG. This decreased the solubility of SG in the reacted FAME phase. The separation was lowest, when unreacted oil along with monoacylglycerides (MG) and diacylglycerides (DG) solubilized SG in the reacted mixture. The separation was also low when high methanol to oil ratios were used in the transesterification. The lowest concentration of SG measured in FAMEs treated by ultrafiltration was 3.4 ppm. The results indicate that ultrafiltration is an effective method to remove SG from soybean FAMEs. |
| first_indexed | 2024-04-24T18:57:05Z |
| format | Article |
| id | doaj.art-290575d8b55f47069ed192301f11ee94 |
| institution | Directory Open Access Journal |
| issn | 2292-8782 2292-8782 |
| language | English |
| last_indexed | 2024-04-24T18:57:05Z |
| publishDate | 2017-03-01 |
| publisher | Alpha Creation Enterprise |
| record_format | Article |
| series | Biofuel Research Journal |
| spelling | doaj.art-290575d8b55f47069ed192301f11ee942024-03-26T15:13:22ZengAlpha Creation EnterpriseBiofuel Research Journal2292-87822292-87822017-03-014155956410.18331/BRJ2017.4.1.643390The in-process removal of sterol glycosides by ultrafiltration in biodiesel productionAndré Y. Tremblay0Alessandro Montpetit1Department of Chemical and Biological Engineering, University of Ottawa, Ottawa, ON, Canada K1N 6N5Department of Chemical and Biological Engineering, University of Ottawa, Ottawa, ON, Canada K1N 6N5Minor components found in biodiesel can affect its stability and cold flow properties. Without extensive post treatments, trace compounds such as sterol glycosides (SG) can remain at unacceptable levels in finished biodiesel fuels. This study proposes to remove SG from reacted Fatty Acid Methyl Ester (FAME) mixtures using ultrafiltration. Degummed soybean oil was transesterified using methanol and a catalyst (sodium methoxide). The mixtures were immediately ultrafiltered after the reaction and the FAMEs from the retentate and permeate were analyzed for SG. The highest separation for SG (86 %) was obtained when the reaction conditions were 0.7 wt.% catalyst and 4:1 MeOH:Oil ratio. The lowest separation (0%) was observed at 0.3 wt.% catalyst and 4:1 MeOH:Oil ratio. The higher separations were explained by the deprotonation of the hydroxyl groups on SG. This decreased the solubility of SG in the reacted FAME phase. The separation was lowest, when unreacted oil along with monoacylglycerides (MG) and diacylglycerides (DG) solubilized SG in the reacted mixture. The separation was also low when high methanol to oil ratios were used in the transesterification. The lowest concentration of SG measured in FAMEs treated by ultrafiltration was 3.4 ppm. The results indicate that ultrafiltration is an effective method to remove SG from soybean FAMEs.http://www.biofueljournal.com/article_43390_cd8e62c9782aa78b90f13cd875961694.pdfSterol glycosideBiodieselFAMEPurificationUltrafiltration |
| spellingShingle | André Y. Tremblay Alessandro Montpetit The in-process removal of sterol glycosides by ultrafiltration in biodiesel production Biofuel Research Journal Sterol glycoside Biodiesel FAME Purification Ultrafiltration |
| title | The in-process removal of sterol glycosides by ultrafiltration in biodiesel production |
| title_full | The in-process removal of sterol glycosides by ultrafiltration in biodiesel production |
| title_fullStr | The in-process removal of sterol glycosides by ultrafiltration in biodiesel production |
| title_full_unstemmed | The in-process removal of sterol glycosides by ultrafiltration in biodiesel production |
| title_short | The in-process removal of sterol glycosides by ultrafiltration in biodiesel production |
| title_sort | in process removal of sterol glycosides by ultrafiltration in biodiesel production |
| topic | Sterol glycoside Biodiesel FAME Purification Ultrafiltration |
| url | http://www.biofueljournal.com/article_43390_cd8e62c9782aa78b90f13cd875961694.pdf |
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