Simultaneous Production of Transformer Insulating Oil and Value-Added Glycerol Carbonates from Soybean Oil by Lipase-Catalyzed Transesterification in Dimethyl Carbonate
Fatty acid methyl esters (FAMEs), as a transformer insulating oil, and value-added glycerol derivatives were simultaneously synthesized from soybean oil by transesterification using Lipozyme 435 in dimethyl carbonate (DMC). The conversion of transformer insulating oil and glycerol derivatives reache...
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| Format: | Article |
| Language: | English |
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MDPI AG
2017-12-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/11/1/82 |
| _version_ | 1828119009172652032 |
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| author | Keon Hee Kim Eun Yeol Lee |
| author_facet | Keon Hee Kim Eun Yeol Lee |
| author_sort | Keon Hee Kim |
| collection | DOAJ |
| description | Fatty acid methyl esters (FAMEs), as a transformer insulating oil, and value-added glycerol derivatives were simultaneously synthesized from soybean oil by transesterification using Lipozyme 435 in dimethyl carbonate (DMC). The conversion of transformer insulating oil and glycerol derivatives reached 92% and 72%, respectively, under optimum conditions (DMC-to-oil molar ratio of 4.5:1 with 0.5 v/v % water and 15 wt. % Lipozyme 435 at 70 °C) in one-pot batch reactions. The purified transformer insulating oil possessed a dielectric breakdown voltage of 82.0 kV, which is sufficiently high for transformer insulation oil applications. Other properties such as density, dielectric breakdown voltage, and viscosity were comparable or superior to those of mineral oil, confirming that achieved material could be used as an alternative transformer insulating oil. Additionally, the glycerol was simultaneously converted into glycerol derivatives, which can be utilized as ingredients for cosmetics or monomers for bio-based plastics. This study clearly demonstrates that transformer insulating oil and value-added glycerol derivatives were simultaneously produced based on the zero-waste utilization of soybean oil. |
| first_indexed | 2024-04-11T13:41:19Z |
| format | Article |
| id | doaj.art-e23d6d8847c742389e071136eb76cf74 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T13:41:19Z |
| publishDate | 2017-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-e23d6d8847c742389e071136eb76cf742022-12-22T04:21:16ZengMDPI AGEnergies1996-10732017-12-011118210.3390/en11010082en11010082Simultaneous Production of Transformer Insulating Oil and Value-Added Glycerol Carbonates from Soybean Oil by Lipase-Catalyzed Transesterification in Dimethyl CarbonateKeon Hee Kim0Eun Yeol Lee1Department of Chemical Engineering, Kyung Hee University, Gyeonggi-do 17104, KoreaDepartment of Chemical Engineering, Kyung Hee University, Gyeonggi-do 17104, KoreaFatty acid methyl esters (FAMEs), as a transformer insulating oil, and value-added glycerol derivatives were simultaneously synthesized from soybean oil by transesterification using Lipozyme 435 in dimethyl carbonate (DMC). The conversion of transformer insulating oil and glycerol derivatives reached 92% and 72%, respectively, under optimum conditions (DMC-to-oil molar ratio of 4.5:1 with 0.5 v/v % water and 15 wt. % Lipozyme 435 at 70 °C) in one-pot batch reactions. The purified transformer insulating oil possessed a dielectric breakdown voltage of 82.0 kV, which is sufficiently high for transformer insulation oil applications. Other properties such as density, dielectric breakdown voltage, and viscosity were comparable or superior to those of mineral oil, confirming that achieved material could be used as an alternative transformer insulating oil. Additionally, the glycerol was simultaneously converted into glycerol derivatives, which can be utilized as ingredients for cosmetics or monomers for bio-based plastics. This study clearly demonstrates that transformer insulating oil and value-added glycerol derivatives were simultaneously produced based on the zero-waste utilization of soybean oil.https://www.mdpi.com/1996-1073/11/1/82soybean oiltransformer insulating oilglycerol derivativeslipasetransesterification |
| spellingShingle | Keon Hee Kim Eun Yeol Lee Simultaneous Production of Transformer Insulating Oil and Value-Added Glycerol Carbonates from Soybean Oil by Lipase-Catalyzed Transesterification in Dimethyl Carbonate Energies soybean oil transformer insulating oil glycerol derivatives lipase transesterification |
| title | Simultaneous Production of Transformer Insulating Oil and Value-Added Glycerol Carbonates from Soybean Oil by Lipase-Catalyzed Transesterification in Dimethyl Carbonate |
| title_full | Simultaneous Production of Transformer Insulating Oil and Value-Added Glycerol Carbonates from Soybean Oil by Lipase-Catalyzed Transesterification in Dimethyl Carbonate |
| title_fullStr | Simultaneous Production of Transformer Insulating Oil and Value-Added Glycerol Carbonates from Soybean Oil by Lipase-Catalyzed Transesterification in Dimethyl Carbonate |
| title_full_unstemmed | Simultaneous Production of Transformer Insulating Oil and Value-Added Glycerol Carbonates from Soybean Oil by Lipase-Catalyzed Transesterification in Dimethyl Carbonate |
| title_short | Simultaneous Production of Transformer Insulating Oil and Value-Added Glycerol Carbonates from Soybean Oil by Lipase-Catalyzed Transesterification in Dimethyl Carbonate |
| title_sort | simultaneous production of transformer insulating oil and value added glycerol carbonates from soybean oil by lipase catalyzed transesterification in dimethyl carbonate |
| topic | soybean oil transformer insulating oil glycerol derivatives lipase transesterification |
| url | https://www.mdpi.com/1996-1073/11/1/82 |
| work_keys_str_mv | AT keonheekim simultaneousproductionoftransformerinsulatingoilandvalueaddedglycerolcarbonatesfromsoybeanoilbylipasecatalyzedtransesterificationindimethylcarbonate AT eunyeollee simultaneousproductionoftransformerinsulatingoilandvalueaddedglycerolcarbonatesfromsoybeanoilbylipasecatalyzedtransesterificationindimethylcarbonate |