Characterization of insoluble material isolated from Colombian palm oil biodiesel

Plata, Vladimir; Gauthier‐Maradei, Paola; Bohórquez, Arnold R. Romero; Kafarov, Viatcheslav; Castillo, E.

doi:10.1016/j.biombioe.2014.12.024

Cited by 17 publications

(6 citation statements)

References 22 publications

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“…Many studies have shown the composition of the sediments found in biodiesel storage tanks. 5,6,20 However, its microbial deteriogenic potential and composition has not yet been elucidated. The results from chemical analysis were concordant with the literature, where Bondioli 21 found similar results when evaluating related material.…”

Section: Sludge Characterizationmentioning

confidence: 99%

“…However, other authors have found elements in similar material which were not detected by our analyses. Plata et al 20 identified insoluble materials from palm oil biodiesel as monopalmitin (saturated monoglyceride) and glycoside sterols. Bondioli 21 identified saturated monoglycerides and fatty acids in sediments from soybean biodiesel.…”

Section: Sludge Characterizationmentioning

confidence: 99%

“…7,23 Also, the presence of compounds with low solubility in biodiesel, such as sterol glycosides, has been considered the main cause of the formation of sediments. 5,6,20 Another important aspect of the sediment formation in biodiesel is its oxidative stability. During the storage period, this property can enhance the risk of sediment formation.…”

Section: Sludge Characterizationmentioning

confidence: 99%

“…The chemical nature of this residue has already been well explored in the literature. [20][21][22] The sludge is in constant contact with the biodiesel during production and it is only drained a few times a year. However, no effort has been made to verify whether this sludge could be a source of contamination by deteriogenic biodiesel microorganisms, which in favorable conditions could grow and degrade the stored fuel.…”

Section: Deteriogenic Capacity Of Sludge Native Microorganismsmentioning

confidence: 99%

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Nature of Insoluble Material Found in the Bottom of Soybean Biodiesel Storage Tank: Chemical and Microbiological Approach

Cazarolli¹,

Boelter²,

Lima³

et al. 2018

J. Braz. Chem. Soc.

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During biodiesel storage, chemical reactions may occur, producing sludges. The aim of this study was to characterize the chemical and microbial composition of the sludge found in a biodiesel storage tank. The material was collected in a biodiesel production plant. The sludge chemical characterization was performed by Fourier transform infrared (FTIR) spectroscopy, flame atomic absorption spectroscopy (FAAS), gas chromatography (GC), and the microbial investigation used culture-dependent techniques. The deteriogenic potential of the native microbial community was evaluated using the sludge as a microbial inoculum in a 60 day experiment. The microbial growth, biodiesel degradation, pH alterations, and the detection of esters in the aqueous phase were evaluated. The chemical analysis indicated the sludge composition as fatty acids esters and metallic ions; sterols glycosides were not detected. Seven bacteria and five fungi species were obtained from the sludge. The microbial growth analysis indicated that the native community does not have high biodiesel deteriogenic capacity.

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Section: Sludge Characterizationmentioning

confidence: 99%

Section: Sludge Characterizationmentioning

confidence: 99%

Section: Sludge Characterizationmentioning

confidence: 99%

Section: Deteriogenic Capacity Of Sludge Native Microorganismsmentioning

confidence: 99%

See 2 more Smart Citations

Nature of Insoluble Material Found in the Bottom of Soybean Biodiesel Storage Tank: Chemical and Microbiological Approach

Cazarolli¹,

Boelter²,

Lima³

et al. 2018

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

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“…Particles composed of clumped SG molecules also promote aggregation or precipitation of other compounds in the biodiesel, such as saturated monoacyl glycerides (SMGs), which further reduces the fluidity of biodiesel and increases the likelihood of clogging [ 12 , 13 ]. Additionally, the presence of this sediment causes several complications during biodiesel production, which increases costs [ 7 , 12 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

An industrial scale process for the enzymatic removal of steryl glucosides from biodiesel

Peirú

Aguirre

Eberhardt

et al. 2015

Biotechnol Biofuels

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BackgroundBiodiesels produced from transesterification of vegetable oils have a major quality problem due to the presence of precipitates, which need to be removed to avoid clogging of filters and engine failures. These precipitates have been reported to be mostly composed of steryl glucosides (SGs), but so far industrial cost-effective methods to remove these compounds are not available. Here we describe a novel method for the efficient removal of SGs from biodiesel, based on the hydrolytic activity of a thermostable β-glycosidase obtained from Thermococcus litoralis.ResultsA steryl glucosidase (SGase) enzyme from T. litoralis was produced and purified from Escherichia coli cultures expressing a synthetic gene, and used to treat soybean-derived biodiesel. Several optimization steps allowed for the selection of optimal reaction conditions to finally provide a simple and efficient process for the removal of SGs from crude biodiesel. The resulting biodiesel displayed filterability properties similar to distilled biodiesel according to the total contamination (TC), the cold soak filtration test (CSFT), filter blocking tendency (FBT), and cold soak filter blocking tendency (CSFBT) tests. The process was successfully scaled up to a 20 ton reactor, confirming its adaptability to industrial settings.ConclusionsThe results presented in this work provide a novel path for the removal of steryl glucosides from biodiesel using a cost-effective, environmentally friendly and scalable enzymatic process, contributing to the adoption of this renewable fuel.Electronic supplementary materialThe online version of this article (doi:10.1186/s13068-015-0405-x) contains supplementary material, which is available to authorized users.

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Improvement of Palm Oil Biodiesel Filterability by Adsorption Methods

Plata

Haagenson

Dağdelen

et al. 2015

J Americ Oil Chem Soc

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Palm oil biodiesel (POB) is characterized by a very high cold soak filtration time (CSFT), which places the acceptability of this biofuel at risk. Therefore, the effect of four adsorbents, namely diatomaceous earth, natural silicate (NS), neutral bleaching earth (NBE), and acid activated bleaching earth (AABE), at two levels of addition (1 and 5 wt%) or two temperatures (25 and 110 °C) on the precipitate content and CSFT of POB was investigated. The impact on total glycerin content, moisture content, and oxidative stability was also examined. All treatments significantly decreased the precipitate content, total glycerin content, and moisture content, but only treatments with NS, NBE, and AABE at 5 wt% and 25 °C achieved acceptable filterability. The OSI value was also decreased; however, it remained above the ASTM limit. Operational conditions of treatment with AABE were further optimized in a two‐factor, five‐level center composite design. The combination of 0.65 wt% AABE and 10 min at 25 °C decreased CSFT to below the ASTM limit. Lower adsorbent concentrations could be effective down to 0.44 wt%, given a corresponding increase in the contact time up to 30 min.

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Characterization of insoluble material isolated from Colombian palm oil biodiesel

Cited by 17 publications

References 22 publications

Nature of Insoluble Material Found in the Bottom of Soybean Biodiesel Storage Tank: Chemical and Microbiological Approach

Nature of Insoluble Material Found in the Bottom of Soybean Biodiesel Storage Tank: Chemical and Microbiological Approach

An industrial scale process for the enzymatic removal of steryl glucosides from biodiesel

Improvement of Palm Oil Biodiesel Filterability by Adsorption Methods

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