Synthesis, spectroscopic and chromatographic studies of sunflower oil biodiesel using optimized base catalyzed methanolysis

Naureen, Rizwana; Tariq, Muhammad; Yusoff, Ismail; Chowdhury, Ahmed Jalal Khan; Ashraf, Muhammad Aqeel

doi:10.1016/j.sjbs.2014.11.017

Cited by 75 publications

(28 citation statements)

References 19 publications

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“…It could be said that, in most cases, the biodiesel complied with the standard, showing good results in some parameters such as flash point, which was higher than in the case of similar biodiesel samples found in the literature (Saydut et al, ). In addition, other values such as ester content, density, and viscosity were similar to those found by other authors (Aransiola et al, ; Focke et al, ; Naureen et al, ). However, as is common in biodiesel from vegetable oils, the oxidative stability is low, not complying with the standard.…”

Section: Resultssupporting

confidence: 90%

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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Section: Resultssupporting

confidence: 90%

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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“…26 Entre os possíveis coprodutos agroindustriais com potencial para atender ao mercado nascente de etanol de segunda geração está a torta de girassol, subproduto da extração do óleo das sementes do Helianthus annuus L. O girassol é uma cultura agrícola que atende ao mercado de grãos e óleo comestíveis e à indústria do biodiesel. 27,28 A torta ou farelo de girassol possui alto teor de celulose e hemicelulose, com potencial, portanto, para a produção de etanol de segunda geração.…”

Section: 21unclassified

FERMENTAÇÃO ALCOÓLICA DE HIDROLISADO HEMICELULÓSICO DE TORTA DE GIRASSOL POR Galactomyces geotrichum UFVJM-R10 E Candida akabanensis UFVJM-R131

Matos¹,

Souza²,

Santos³

et al. 2017

Quim. Nova

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ALCOHOLIC FERMENTATION OF HEMICELLULOSIC HYDROLYZATE FROM SUNFLOWER CAKE BYGalactomyces geotrichum UFVJM-R10 AND Candida akabanensis UFVJM-R131. The use of the hemicellulosic fraction of plants for the production of second generation bioethanol depends on microorganisms capable to ferment pentoses. Two yeast strains habile to xylose fermenting in synthetic medium, Candida akabanensis UFVJM-R131 and Galactomyces geotrichum UFVJM-R10, not yet registered in the literature for the production of bioethanol, were evaluated here in the alcoholic fermentation of the hemicellulosic hydrolyzate from sunflower cake. The biomass hydrolysis was performed by 38 minutes at 120 °C / 1 atm with 6% H 2 SO 4 solution and solid / liquid ratio of 1:3.2. Chromatographic characterization of the hemicellulosic hydrolyzate showed the presence of glucose (7.57 g L ). Both yeasts were able to produce ethanol from the acid hydrolyzate from sunflower cake. The fermentation carried out with G. geotrichum UFVJM-R10 and C. akabanensis UFVJM-R131 presented Y P/S values of 0.29 and 0.27 g ethanol g -1 sugars , respectively. The amounts of the inhibitors identified in the hydrolyzate did not affect the efficiency of the alcoholic fermentation. The supplementation of the hydrolyzate with nitrogen and mineral sources increased the rate of consumption of xylose and arabinose.

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“…Estes resultados são importantes, pois o menor teor deácidos graxos insaturados obtidos para a amostra SYN 3950 promove características interessantes ao biodiesel obtido a partir doóleo desta variedade, tais como, maior estabilidade oxidativa e menoríndice de iodo. Os resultados de CG-MS estão de acordo com a literatura [32], porque osésteres metílicos apresentaram tempos de retenção e identidade química semelhantes. Oíndice de iodo mede o grau de insaturação presente nosésteres em uma amostra de biodiesel.…”

Section: Cromatografia Eésteres Presentes Nos Biodieseisunclassified

Oxidative stability of sunflower oil methyl biodiesel of the conventional and high oleic genotypes

Berbel

Guerra

Turcatel³

et al. 2016

Revista Ciencias Exatas E Naturais

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Resumo: Osóleos e seus produtos derivados são susceptíveis a oxidação, devido aosácidos graxos insaturados presentes em sua composição. Oóleo e o biodiesel obtidos de oleaginosas apresentam valores baixos de estabilidade oxidativa, variando com o percentual dé acidos graxos insaturados. O presente trabalho visa o estudo da estabilidade oxidativa e caracterização do biodiesel obtido a partir deóleo de girassol com diferentes graus de insaturação. Foram selecionados três genótipos para extração mecânica deóleo, sendo dois do tipo convencional e um do tipo alto oleico. Posteriormente, oóleo vegetal foi submetidoà reação de transesterificação via rota metálica utilizando-se de católise homogênea. O biodiesel foi caracterizado para massa específica, teor de umidade,índice de acidez,índice de iodo, estabilidade oxidativa e teor deésteres. Os biodieseis das variedades deóleos de girassol convencional apresentaram como características baixos valores de estabilidade oxidativa, porém o biodiesel derivado doóleo tipo alto oleico SYN 3950 apresentou maior estabilidade oxidativa e menores valores deíndice de iodo indicando menor teor de insaturações. As

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Synthesis, spectroscopic and chromatographic studies of sunflower oil biodiesel using optimized base catalyzed methanolysis

Cited by 75 publications

References 19 publications

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

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

FERMENTAÇÃO ALCOÓLICA DE HIDROLISADO HEMICELULÓSICO DE TORTA DE GIRASSOL POR Galactomyces geotrichum UFVJM-R10 E Candida akabanensis UFVJM-R131

Oxidative stability of sunflower oil methyl biodiesel of the conventional and high oleic genotypes

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