Lipase-catalyzed biodiesel production from soybean oil in ionic liquids

Ha, Sung Ho; Lan, Mai Ngoc; Lee, Sang Hyun; Hwang, Sung Mi; Koo, Yoon‐Mo

doi:10.1016/j.enzmictec.2007.03.017

Cited by 218 publications

(96 citation statements)

References 18 publications

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“…However, BMIMHSO4 showed the highest catalytic activity and gives the highest conversion of 97% after reaction for 7 h. Meanwhile, HMIMHSO4 able to reduce 82% of FFA in the first 7 h. It was found that the rate of reaction of HMIMHSO4 is much lower compared to the BMIMHSO4. A similar statements reported and cited in literatures [19,20,21]. The ability to donate the electron of alkyl group increases with increasing the alkyl chain.…”

Section: Bulletin Of Chemical Reaction Engineering and Catalysis 11 (2supporting

confidence: 68%

A Preliminary Study: Esterification of Free Fatty Acids (FFA) in Artificially Modified Feedstock Using Ionic Liquids as Catalysts

Roslan

Hasnan

Abdullah

et al. 2016

Bull. Chem. React. Eng. Catal.

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The exploration of non-edible oils as a feedstock has been positively affect the economic viability of biodiesel production. Due to the high level of free fatty acid (FFA) in non-edible oils, esterification is needed to remove the acidity to the minimum level before base-catalyzed transesterification. In this study, 1-hexyl-3-methylimidazolium hydrogen sulphate (HMIMHSO4) was self-synthesized and compared with the commercialized ionic liquid, 1-butyl-3-methylimidazolium hydrogen sulphate (BMIMHSO4). HMIMHSO4 and BMIMHSO4 were characterized by 1 H NMR prior to use in the esterification reaction. The reaction was carried out in a batch reactor and variables such as types of alcohol, oil: alcohol molar ratio, temperature and types of stirring were investigated. The highest conversion for each catalyst was achieved using ethanol as a solvent at the condition of 343 K reaction temperature, 12:1 alcohol to oil ratio in 8 h reaction time. BMIMHSO4 showed higher conversion (98%) as compared to HMIMHSO4 with only 82% conversion. Clearly, BMIMHSO4 shows considerable potential to reduce the FFA in the feedstock as it is exhibit excellent catalytic activity due to lower alkyl chain of BMIMHSO4 compared to HMIMHSO4.

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Section: Bulletin Of Chemical Reaction Engineering and Catalysis 11 (2supporting

confidence: 68%

A Preliminary Study: Esterification of Free Fatty Acids (FFA) in Artificially Modified Feedstock Using Ionic Liquids as Catalysts

Roslan

Hasnan

Abdullah

et al. 2016

Bull. Chem. React. Eng. Catal.

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“…Ha et al screened several types of ILs in a lipase-catalyzed transesterification reaction using soybean oil and methanol. Results indicated that the use of hydrophobic ILs, yielded higher percent conversions as compared to solvent-free systems (Ha et al, 2007). Very recently Ha et al studied the continuous production and in situ separation of biodiesel using ILs through immobilized Candida antarctica lipase-catalyzed methanolysis of soybean oil.…”

Section: Ils Applications In Biodiesel Synthesismentioning

confidence: 99%

Perspectives of Ionic Liquids Applications for Clean Oilfield Technologies

Martínez‐Palou¹,

Sánche²

2011

Ionic Liquids: Theory, Properties, New Approaches

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“…Due to these disadvantages, enzymes, especially lipases, are not applied on an industrial scale, although presenting high catalytic activity for transesterification of triglycerides under mild reaction conditions. Ha et al (2007) exemplifies this application and demonstrates the methanolysis of soybean oil catalyzed by lipase in 23 different ionic liquids. The highest yield of biodiesel obtained was 80% after 12 hours of reaction at 50°C with four equivalents of methanol in the ionic liquid 1-ethyl-3-methylimidazolium trifluoromethanosulfonate ([Emim][CF 3 SO 3 ]).…”

Section: Ionic Liquids As Supports For Enzymatic Catalysismentioning

confidence: 99%

Use of ionic liquids in biodiesel production: a review

Andreani

Rocha

2012

Braz. J. Chem. Eng.

121

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-This paper discusses the feasibility of the use of ionic liquids as catalysts in the biodiesel production field, describing some studies already published in the literature on this theme. Ionic liquids are regarded as a new generation of catalysts in the chemical industry, with several uses in different commercial segments. However only a few publications involving this topic can be found in the literature addressing the manufacture of biodiesel from vegetable oils or animal fats. Through the analysis of the data generated in the studies reviewed, it is possible to affirm that ionic liquids present great potential as catalysts for biodiesel production, but there are some challenges to be faced, such as the production of ionic liquids with low cost, easy recovery and with the possibility of reutilization of the catalyst for several cycles.

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Lipase-catalyzed biodiesel production from soybean oil in ionic liquids

Cited by 218 publications

References 18 publications

A Preliminary Study: Esterification of Free Fatty Acids (FFA) in Artificially Modified Feedstock Using Ionic Liquids as Catalysts

A Preliminary Study: Esterification of Free Fatty Acids (FFA) in Artificially Modified Feedstock Using Ionic Liquids as Catalysts

Perspectives of Ionic Liquids Applications for Clean Oilfield Technologies

Use of ionic liquids in biodiesel production: a review

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