Stability of biodiesel – A review

Saluja, Rajesh Kumar; Kumar, Vineet; Sham, Radhey

doi:10.1016/j.rser.2016.05.001

Cited by 194 publications

(120 citation statements)

References 106 publications

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“…This was mainly depended on the type of model vegetable oil used, since the oxidation stability of biodiesel was determined by the concentration of the unsaturated fatty acid chains. Vegetable oils rich in unsaturated fatty acids were more easily oxidized (e. g. soybean oil, sunflower oil and grape seed oil) . In our initial work, we just focused on the exploration of the catalyst's reactivity and used a commonly studied soybean oil as the research subject.…”

Section: Resultsmentioning

confidence: 99%

“…Vegetable oils rich in unsaturated fatty acids were more easily oxidized (e. g. soybean oil, sunflower oil and grape seed oil). [38][39] In our initial work, we just focused on the exploration of the catalyst's reactivity and used a commonly studied soybean oil as the research subject. According to the reported literatures, [40][41] to increase the oxidation stability of synthesized biodiesel, an antioxidant of tertiary butylhydroquinone (TBHQ) was added in the final FAMEs product and the oxidation stability of soybean oil biodiesel blend was retested.…”

Section: Fuel Properties Of Obtained Famesmentioning

confidence: 99%

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Highly Efficient and Recyclable Metal Salt Catalyst for the Production of Biodiesel: Toward Greener Process

et al. 2017

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A highly reactive and recyclable metal catalyst was reported for the transesterification of model vegetable oil with methanol to produce fatty acid methyl esters (FAMEs) under microwave condition. Among the screened catalysts, Al2(SO4)3 provided the highest FAME yield of 98.1 % at 130 oC within 30 min. Different reaction parameters were fully investigated which were found to have great influences on the product yields. Microwave energy showed a remarkable accelerated reaction rate as compared to that from the conventional oil heating way. The catalytic system also showed good tolerance to water and free fatty acids. The catalyst can be easily recovered through a simple extraction/evaporation, which still posed good reactivity in the recycling runs. The characters of the obtained biodiesel was also characterized. Mechanistic studies revealed that the hydrolysis of the metal salt to generate the corresponding cationic and acidic species were responsible for the good catalytic activity of the reaction.

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Section: Resultsmentioning

confidence: 99%

Section: Fuel Properties Of Obtained Famesmentioning

confidence: 99%

Highly Efficient and Recyclable Metal Salt Catalyst for the Production of Biodiesel: Toward Greener Process

et al. 2017

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“…Concerning additives, both natural and synthetic antioxidants are used, which scavenge free radicals that would attack unsaturated FAME, extending the storage time of biofuels (Dunn, ). According to the literature, many antioxidants are used for this purpose, especially butylated hydroxyanisole (BHA) and tert‐butylhydroquinone (TBHQ), which are aromatic compounds (Dunn, ; Kumar, ; Ramalingam et al, ; Saluja et al, ; Verma et al, ; Zhou et al, ). These antioxidants have been used in a wide range of concentrations, generally from 500 to 5000 mg·kg −1 (Dunn, ), being effective with regard to oxidation stability.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Antioxidants on Corn and Sunflower Biodiesel Properties under Extreme Oxidation Conditions

Nogales-Delgado

Martín

Cabanillas

et al. 2019

J Americ Oil Chem Soc

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Biodiesel is an alternative to mineral fuels, with advantages such as biodegradability. However, this makes biodiesel unstable to oxidation. In this way, the use of natural or synthetic antioxidants is necessary. Although many studies have paid attention to the effect of these antioxidants on oxidation stability, not much literature about their effect of them on other properties (before and during storage) was found. The aim of this research study was to characterize biodiesel from corn and sunflower by adding two antioxidants, butylated hydroxyanisole (BHA) and tertbutylhydroquinone (TBHQ), in order to improve its oxidation stability. Moreover, the effect of oxidation on the parameters of biodiesel was studied by using extreme oxidation conditions to accelerate the oxidation process. Both antioxidants improved the oxidation stability of biodiesel, whereas some parameters were altered (viscosity and acid number), which could make this biofuel, if high concentrations of antioxidants are used, unsuitable for commercialization according to standards.Keywords BHA Á TBHQ Á Oxidation stability Á Viscosity Á Thermal analysis Á Fatty acid methyl esters J Am Oil Chem Soc (2020) 97: 201-212.

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“…In recent years, biodiesel has gained attention because it is a biofuel with similar properties that can partly or completely replace petroleumderived diesel. 1 Since biodiesel is completely miscible with diesel, the blending of both fuels in any proportion is recommended in order to improve its qualities. 2 Biodiesel has been proven to reduce the emissions of hydrocarbons, carbon monoxide and particulates when used alone or in blends that include petroleum diesel.…”

Section: Introductionmentioning

confidence: 99%

Fast Determination of Biodiesel Content in Commercial Diesel/ Biodiesel Blends by Using Digital Images and Multivariate Calibration

et al. 2017

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A new simple, rapid and inexpensive analytical method was developed to determine the biodiesel percentage in biodiesel/ diesel blends through simple digital images of samples obtained by scanning with a commercial scanner. Soybean biodiesel and petroleum diesel samples were acquired from refineries currently in operation. There were prepared several mixtures within the range 1.5 to 12.0% of biodiesel in diesel oil, using the same procedure as is done in industry. The analytical signals were images recorded with a scanner. This data was decomposed with different color systems: RGB, HSV, HLS, CMYK and Grayscale. Chemometrics models based on color signals obtained from different mixtures of biodiesel/diesel were built. The quantification by using partial least squares (PLS) resulted in a RMSEP value for biodiesel of 0.9% (w/w); this load approximately 10-times smaller than the corresponding calibration range, with a correlation of 0.96 between predicted and reference values.

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Stability of biodiesel – A review

Cited by 194 publications

References 106 publications

Highly Efficient and Recyclable Metal Salt Catalyst for the Production of Biodiesel: Toward Greener Process

Highly Efficient and Recyclable Metal Salt Catalyst for the Production of Biodiesel: Toward Greener Process

The Effect of Antioxidants on Corn and Sunflower Biodiesel Properties under Extreme Oxidation Conditions

Fast Determination of Biodiesel Content in Commercial Diesel/ Biodiesel Blends by Using Digital Images and Multivariate Calibration

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