Methyl acetate as solvent in pressurized liquid extraction of crambe seed oil

Mello, Bruna Tais Ferreira de; Iwassa, Isabela Julio; Cuco, Roberta Pazinato; Garcia, Vitor Augusto dos Santos; Silva, Camila da

doi:10.1016/j.supflu.2018.11.024

Cited by 38 publications

(19 citation statements)

References 66 publications

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“…[ 1,4 ] The only tocopherol detected in the oil was γ‐tocopherol, a similar result to that reported by Mello et al. [ 3 ] Phytosterols and tocopherols act by improving the oxidation stability of the oil [ 3,38,56 ] and consequently of the biodiesel. Yoshida and Niki [ 57 ] found that the presence of β‐sitosterol, stigmasterol, and campesterol reduced the oxidation of methyl linoleate.…”

Section: Resultssupporting

confidence: 76%

“…[ 34 ] However, the excess of methyl acetate can be recovered after the reaction step and reused in the process without a loss of efficiency, since the purpose of the sequential process is to eliminate the steps required for refining, degumming and deacidification of the oil, as well as the solvent separation and recovery. [ 3 ] According to a study by Zeng et al., [ 8 ] these steps represent 70% of the total costs of biodiesel production. Also, Mello et al.…”

Section: Resultsmentioning

confidence: 99%

“…The seeds of crambe ( Crambe abyssinica H.) have a high oil content (26–42%), [ 1–3 ] and this oil is comprised of ≈57% of erucic acid. [ 3,4 ] Erucic acid has a long carbon chain (C22:1), which gives the oil and the biodiesel produced from it good thermal‐oxidative stability [ 5 ] and its presence makes the oil obtained toxic and unsuitable for human consumption. [ 6 ] These characteristics make crambe seed oil a raw material of interest for biodiesel production.…”

Section: Introductionmentioning

confidence: 99%

“…A projection for 2020 indicates that around 42 billion liters of glycerol will be produced, [ 20 ] which highlights the need to find a suitable destination for the surplus. In this regard, methyl acetate can be used in the oil extraction step [ 3,21 ] and in the supercritical reaction. [ 22–25 ] The conduction of the reaction with methyl acetate has the advantage of producing triacetin, which can be incorporated as a biodiesel additive in the proportion of up to 10 wt%, [ 26 ] which provides improved cold flow properties and oxidation stability of the biofuel.…”

Section: Introductionmentioning

confidence: 99%

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Use of the Product from Low Pressure Extraction (Crambe Seed Oil and Methyl Acetate) for Synthesis of Methyl Esters and Triacetin Under Supercritical Conditions

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Mello

Cardozo‐Filho

et al. 2020

Euro J Lipid Sci & Tech

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Methyl esters (ME) and triacetin production from the supercritical interesterification of the product from low pressure extraction (crambe seed oil and methyl acetate) are evaluated. Reactions are conducted at 300-375°C for different residence times, at 20 MPa, and under these conditions the thermal stability of triacetin is evaluated. The effect of the free fatty acid (FFA) concentration (in oil) is determined. An increase in temperature favors the formation of ME and triacetin at shorter reaction times. At 375°C, after 15 min a drop in the ME yield is observed and triacetin is not detected. A reduction in the triacetin concentration (reaching ≈99%) is observed at 375°C. High FFA concentration (in oil) initially provided higher product generation, however, after 15 min no influence is observed. The highest ME yield (≈60%) is obtained at 300°C, along with 1.22 wt% triacetin and ≈5.0 wt% unreacted compounds. Practical Applications: This paper reports new experimental data on an integrated process for the production of methyl esters from low pressure extraction (crambe seeds and methyl acetate) and supercritical reaction of the extraction mixture. The technique used allows the removal of a high quantity of oil from good quality crambe seeds. The viability of applying the integrated process to obtain oils with a high content of free fatty acids is verified, promoting the obtainment of relatively simple methyl esters. The procedure does not require oil purification and solvent recovery prior to the reaction.

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Section: Resultssupporting

confidence: 76%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Use of the Product from Low Pressure Extraction (Crambe Seed Oil and Methyl Acetate) for Synthesis of Methyl Esters and Triacetin Under Supercritical Conditions

Postaue

Mello

Cardozo‐Filho

et al. 2020

Euro J Lipid Sci & Tech

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“…A utilização do crambe (Crambe abyssinica H.) é atrativa devido ao alto teor de óleo em suas sementes (37 a 49%) (TAVARES et al, 2017;MELLO et al, 2019) e ainda a presença do ácido erúcico como principal ácido graxo (59%) (SANTOS et al, 2015), tornando-o impróprio para o consumo humano, permitindo que possa ser aplicado exclusivamente em indústrias e produção de biocombustíveis.…”

Section: Introductionunclassified

Interesterificação Do Óleo De Crambe Com Adição De Solução Aquosa De Ácido Acético Ao Meio Reacional

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Iwassa

Silva

2019

e-xacta

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A interesterificação permite a obtenção de ésteres livre de glicerol, com a produção da triacetina, que pode ainda ser utilizada como aditivo ao biocombustível. A fim de potencializar a produção de ésteres e triacetina a inserção de aditivos a reação tem sido abordada. O presente estudo teve como objetivo avaliar o efeito de adicionar solução aquosa de ácido acético 26% (SA26%) em 5 e 10% (em relação a massa de óleo) sobre o rendimento em ésteres e teor de triacetina, bem como verificar seu efeito sobre os ésteres individuais, variando a temperatura da reação de 300 a 325 °C e tempo de residência entre 10 a 30 minutos. Para a maioria das reações conduzidas com SA(26%) a 300 °C houve maior produção de ésteres, se comparadas as reações sem o aditivo (p<0,05). Os resultados demonstraram que as reações conduzidas com SA26% permitiram elevar os rendimentos de ésteres em até 45%. Foi possível constatar ainda conversão completa dos triglicerídeos em ésteres com apenas 20 min de reação, com 10% de SA(26%) 300 °C. O aumento da temperatura resultou em maior rendimento inicial (10 min), contudo foi observada redução dos ésteres individuais analisados, sendo que, dentre estes o linoleato se mostrou mais susceptível a decomposição térmica. AbstractThe interesterification allows the production of esters free of glycerol, with the production of triacetin, which can still be used as an additive to biofuel. In order to potentiate the esters and triacetin production the insertion of additives into the reaction has been approached. The present study aimed to evaluate the effect of adding aqueous solution of acetic acid 26% (SA26%) in 5 and 10% (relative to oil mass) on the ester yield and triacetin content, as well as to verify its effect on obtaining the individual esters, varying the reaction temperature from 300 to 325 °C and residence time between 10 to 30 minutes. For the majority of the reactions conducted with SA26% at 300 °C there was higher ester production, when compared with the reactions without the additive (p<0.05). The results showed that the reactions conducted with SA26% allowed to raise ester yields by up to 45%. It was also possible to verify complete conversion of the triglycerides to esters with only 20 min of reaction, with 10% of SA26% at 300 °C. The increase in temperature resulted in a higher initial yield (10 min), however, a reduction of the individual esters analyzed was observed, with linoleate being more susceptible to thermal decomposition.

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A Primer on Oils Processing Technology

Anderson

Hossain

Shahidi

2020

Bailey's Industrial Oil and Fat Products

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In the last couple of decades, the emphasis has been placed from stand‐alone operations toward the integrated manufacturing facility, producing a more complete range of value‐added products from the raw seed to the dinner table. During this transition, operations have become more dependent on each other, as the individual functions involved must now consider the impact of their actions on the total process. At the same time, the scope of knowledge each operation must have of other functions has expanded, and it is important that at least a basic understanding of the “big overall picture” be available to the decision‐maker. The purpose of this article is to provide an overview of the typical processes and interrelations associated with a total integrated facility.

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Methyl acetate as solvent in pressurized liquid extraction of crambe seed oil

Cited by 38 publications

References 66 publications

Use of the Product from Low Pressure Extraction (Crambe Seed Oil and Methyl Acetate) for Synthesis of Methyl Esters and Triacetin Under Supercritical Conditions

Use of the Product from Low Pressure Extraction (Crambe Seed Oil and Methyl Acetate) for Synthesis of Methyl Esters and Triacetin Under Supercritical Conditions

Interesterificação Do Óleo De Crambe Com Adição De Solução Aquosa De Ácido Acético Ao Meio Reacional

A Primer on Oils Processing Technology

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