Influence of fatty acid methyl ester composition on tribological properties of vegetable oils and duck fat derived biodiesel

Hamdan, Siti Hartini; Chong, William Woei Fong; Ng, Jo-Han; Ghazali, Mariyam Jameelah; Wood, R.J.K.

doi:10.1016/j.triboint.2016.12.008

Cited by 55 publications

(20 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this case, the decrease in total FAME content over time was used to determine the yield of biolubricant production. FAME distribution, after the first transesterification (see Figure 1), was similar to previous studies with the same oils, observing slight differences [6,12,16,19]. For rapeseed oil, the majority ester was methyl oleate (63.07%), followed by methyl linoleate (21.15%), and linolenate (8.71%).…”

Section: Raw Materials Characterizationsupporting

confidence: 85%

“…Thus, the specific composition of these vegetable oils can vary depending on the kind of oil or pre-harvest conditions such as soil, climate, etc [2]. Consequently, the characteristics of these vegetable oils (and their derivatives, such as fatty acid methyl esters), especially some properties such as viscosity or oxidative stability, depend on the percentages of these components [1,5,[12][13][14]. Oleic acid, with one unsaturation in its molecular structure, promotes high oxidative stabilities, whereas ricinoleic acid increases viscosity due to the hydroxyl group in its structure.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Biolubricants from Rapeseed and Castor Oil Transesterification by Using Titanium Isopropoxide as a Catalyst: Production and Characterization

et al. 2020

View full text Add to dashboard Cite

The transesterification of rapeseed and castor oil methyl esters with different alcohols (2-ethyl-1-hexanol, 1-heptanol and 4-methyl-2-pentanol) and titanium isopropoxide as a catalyst, to produce biolubricants, was carried out. Parameters such as temperature, alcohol/methyl ester molar ratio, and catalyst concentration were studied to optimize the process. The reaction evolution was monitored with the decrease in FAME concentration by gas chromatography. In general, the reaction was almost complete in two hours, obtaining over 93% conversions. All the variables studied influenced on the reaction yields. Once the optimum conditions for the maximum conversion and minimum costs were selected, a characterization of the biolubricants obtained, along with the study of the influence of the kind of alcohol used, was carried out. The biolubricants had some properties that were better than mineral lubricants (flash points between 222 and 271 °C), needing the use of additives when they do not comply with the standards (low viscosity for rapeseed biolubricant, for instance). There was a clear influence of fatty acids of raw materials (oleic and ricinoleic acids as majority fatty acids in rapeseed and castor oil, respectively) and the structure of the alcohol used on the final features of the biolubricants.

show abstract

Section: Raw Materials Characterizationsupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Biolubricants from Rapeseed and Castor Oil Transesterification by Using Titanium Isopropoxide as a Catalyst: Production and Characterization

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The profiles of these compounds (in biodiesel and biolubricants) might explain many of their physical and chemical characteristics, especially in the case of oxidative stability, viscosity or tribology. 6,34 Table 3 shows the main characteristics of the biolubricants obtained in this study. First of all, it should be pointed out the high yields obtained, exceeding 96% in all cases, which are interesting conversions, as in many cases these yields are in lower ranges.…”

Section: F I G U R Ementioning

confidence: 99%

Biodiesel and biolubricant production from different vegetable oils through transesterification

Martín

Nogales

González

2020

Engineering Reports

View full text Add to dashboard Cite

A study about the production and characterization of biodiesel and, especially, biolubricants from different raw materials (ie, rapeseed, a mixture of corn and sunflower, and frying oils) is here performed. Optimal chemical conditions were used to carry out the transesterification of biodiesel and biolubricants, hence obtaining high yields in all investigated cases. The physical properties, such as fatty acid methyl ester profile, viscosity, viscosity index and oxidative stability, among others, are analyzed. The biodiesel products comply with the standards, according to the characteristics covered in this research. Regarding the biolubricants, the viscosity values are analogous to those found in the literature but showing longer induction points. These properties appear to be highly influenced by the fatty acid profile of the raw material, which is an important factor for both biodiesel and biolubricant performance. Therefore, the initial characterization of vegetable oils is an important stage for the optimal design of biorefineries. Finally, the use of transesterification for biodiesel and biolubricant production is also justified, as many valuable products (eg, glycerol, fatty acid methyl esters, and fatty acid complex esters) are obtained and some by-products (eg, methanol) can be reused.

show abstract

“…For biodiesel production, the use of oleaginous plants is usual, along with others, such as animal fats, fried oils, algae, bacteria, etc., and many research works about its production and performance in engines or tribology were carried out, which points out the importance that biodiesel has been gaining recently [10][11][12][13][14][15][16][17][18]. In the case of vegetable oils, such as canola, rapeseed, soya, or safflower oils, among others, they have been considered to produce biodiesel [7,[19][20][21][22], with acceptable results.…”

Section: Introductionmentioning

confidence: 99%

Safflower Biodiesel: Improvement of its Oxidative Stability by Using BHA and TBHQ

2019

View full text Add to dashboard Cite

Biodiesel is gaining more and more importance due to environmental issues. This way, alternative and sustainable crops as new biofuel sources are demanded. Safflower could be a sustainable raw material for biodiesel production, showing one disadvantage (as many biodiesels from vegetable oils), that is, a short oxidative stability. Consequently, the use of antioxidants to increase this parameter is mandatory. The aim of this research work was to assess the effect of two antioxidants (butylated hydroxyanisole, BHA, and tert-butylhydroquinone, TBHQ) on the oxidative stability of safflower biodiesel, which was characterized paying attention to its fatty acid methyl ester profile. For oxidative stability, the Rancimat method was used, whereas for fatty acid profile gas chromatography was selected. For the remaining parameters, the methods were followed according to the UNE-EN 14214 standard. The overall conclusion was that safflower biodiesel could comply with the standard, thanks to the use of antioxidants, with TBHQ being more effective than BHA. On the other hand, the combined use of these antioxidants did not show, especially at low concentrations, a synergic or additive effect, which makes the mixture of these antioxidants unsuitable to improve the oxidative stability.

show abstract

Influence of fatty acid methyl ester composition on tribological properties of vegetable oils and duck fat derived biodiesel

Cited by 55 publications

References 24 publications

Biolubricants from Rapeseed and Castor Oil Transesterification by Using Titanium Isopropoxide as a Catalyst: Production and Characterization

Biolubricants from Rapeseed and Castor Oil Transesterification by Using Titanium Isopropoxide as a Catalyst: Production and Characterization

Biodiesel and biolubricant production from different vegetable oils through transesterification

Safflower Biodiesel: Improvement of its Oxidative Stability by Using BHA and TBHQ

Contact Info

Product

Resources

About