Production of biodiesel fuel from triglycerides and alcohol using immobilized lipase

Iso, Mamoru; Chen, Baoxue; Eguchi, Masashi; Kudo, Takashi; Shrestha, Surekha

doi:10.1016/s1381-1177(01)00045-5

Cited by 451 publications

(226 citation statements)

References 8 publications

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“…Using of acids as catalyst is now under intensive investigation (Jacobson et al, 2008) as well as transformation of fatty acids to methylesters (Marchetti and Errazu, 2008). Other transesterification methods are based on heterogeneous catalysts (López et al, 2005) and enzymatic transformation (Iso et al, 2001). The reaction without catalyst proceeds in supercritical state, under high pressure and temperature (Demirbas, 2008).…”

Section: Introductionmentioning

confidence: 99%

The effect of the acidity of rapeseed oil on its transesterification

Kwiecień

Hájek

Skopal

2009

Bioresource Technology

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SummaryThe aim of this work is to study the transesterification of vegetable oils with a high acid number. Rapeseed oil was used as the raw material and its acid number was changed by the adding of oleic acid (from 0.89 to 12.25 mg KOH/g). Methanol was used for transesterification (molar ratio of oil to methanol 1:6) and potassium hydroxide was used as a catalyst. After the reaction time, the residue of catalyst was neutralized by gaseous carbon dioxide and methanol excess was removed. After the separation of two phases, each of them was analyzed (in ester phase: yield, content of methylester and acid number; in glycerol phase: yield, density, viscosity, content of glycerol, soaps, methylester, potassium carbonate and hydrogen carbonate). The obtained data was compared with theoretical material balances and effect on saponification of oil was calculated. The results show that the yield of methylester (biodiesel) is significantly affected by higher acid number, as well as enhanced soap formation. On the other hand, the conversion of the oil and acid number of the ester phase remain at constant values in studied borders.

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Section: Introductionmentioning

confidence: 99%

The effect of the acidity of rapeseed oil on its transesterification

Kwiecień

Hájek

Skopal

2009

Bioresource Technology

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“…There are reports in the literature describing the alcoholysis of vegetable oils or animal fats by a variety of technological routes using several catalysts such as inorganic acids (Dupont et al, 2009;Liang et al, 2009;Zheng et al, 2006), inorganic bases (Dupont et al, 2009;Liang et al, 2009;Vicente et al, 2004) and enzymes (Gamba et al, 2008;Iso et al, 2001;Ranganathan et al, 2008), as discussed below. Depending on the catalyst chosen for the conversion of vegetable oils and animal fats to biodiesel, there are certain peculiarities associated with these reactions.…”

Section: Catalysts In Biodiesel Productionmentioning

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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“…So lipase is used as industrial biocatalyst (Sangeetha et al 2011). Much research is needed to overcome problems such as enzyme inhibition by methanol, exhaustion of enzyme activity and high cost of enzymes, which may contribute to the global effort on industrial implementation of the enzymatic production of biodiesel in the near future (Iso et al 2001, Nordblad and Adlercreutz 2008, Fjerbaek et al 2009). Immobilization improves the enzyme stability under the reaction conditions, and enhances enzyme activity, thus, makes the repeated use of the enzyme feasible, permits the use of enzyme for diverse applications and thus lowers the production cost (Bajaj et al 2010, Tan et al 2010, Sangeetha et al 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Immobilization is studied using covalent bonding, cross-linking, entrapment, adsorption, and encapsulation. Selection of an immobilization strategy greatly influences the properties of biocatalyst (Iso et al 2001, Yagiz et al 2007, Meunier et al 2010, Xie and Ma 2010.…”

Section: Introductionmentioning

confidence: 99%

Trend in enzyme immobilization on nano materials for transesterification to produce biodiesel: A review

Hindryawati¹,

Maniam²,

Feng³

et al. 2018

J bio-sci.

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Biodiesel is a non-toxic and very low sulfur containing, renewable and biodegradable diesel fuel substitute with low volatility and high cetane number. It is derived from fresh or waste vegetable oils and animal fats transesterified with short chain alcohol such as ethanol or methanol in the presence of a catalyst. Several new types of carriers and technologies have been adopted in the recent past to improve the ability of a catalyst in transesterification. One of the new trends is nanoparticles-based immobilization of enzyme as a catalyst. The combination of the precise physical, chemical, optical and electrical properties of nanoparticles with the specific recognition site or catalytic properties has led them to appear in a myriad of novel nanomaterial application. Enzyme immobilized on nanoparticles showed a broader working temperature and pH range and thermal stability than the native enzyme. Enhancement in the reactivity of nanocatalysts is associated with their increased surface area, greater concentrations of highly reactive edge, unusual and stabilized lattice planes. The greater activity of nanomaterial immobilized biocatalyst affords operational simplicity, low energy consumption, and greater safety, in the process of transesterification. This review article highlights the issues including the exploration of the ability of nanomaterial to immobilize biocatalyst and factors that influence the activity of biocatalysts upon immobilization.

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Production of biodiesel fuel from triglycerides and alcohol using immobilized lipase

Cited by 451 publications

References 8 publications

The effect of the acidity of rapeseed oil on its transesterification

The effect of the acidity of rapeseed oil on its transesterification

Use of ionic liquids in biodiesel production: a review

Trend in enzyme immobilization on nano materials for transesterification to produce biodiesel: A review

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