Separation of the Glycerol-Biodiesel Phases in an Ethyl Transesterification Synthetic Route Using Water

Silva, Willian L. G. da; Souza, Patrícia Tonon de; Shimamoto, Gustavo G.; Tubino, Matthieu

doi:10.5935/0103-5053.20150147

Cited by 11 publications

(11 citation statements)

References 2 publications

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“…Methanol is a polar molecule, which exhibits high reactivity. Subsequently, the reaction of triglycerides with methanol and ethanol tends to produce fatty acid methyl ester (FAME) or fatty acid ethyl ester (FAEE), respectively, along with glycerol (Da Silva et al 2015 ). The selection of methanol or ethanol as the preferred alcohol is due to their comparatively lower prices than other high-boiling-point alcohols.…”

Section: Biodiesel Synthesis Route—transesterificationmentioning

confidence: 99%

Nanoferrites heterogeneous catalysts for biodiesel production from soybean and canola oil: a review

et al. 2021

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Fossil fuel depletion and pollution are calling for alternative, renewable energies such as biofuels. Actual challenges include the design of efficient processes and catalysts to convert various feedstocks into biofuels. Here, we review nanoferrites heterogeneous catalysts to produce biodiesel from soybean and canola oil. For that, transesterification is the main synthesis route and offers simplicity, cost-effectiveness, better process control, and high conversion yield. Catalysis with nanoferrites and composites allow to obtain yields higher than 95% conversion with less than 5.0 wt.% of catalyst loading at 80 °C in 1–2 h. More than 90% conversion yields can be achieved with a moderate alcohol/oil molar ratio, i.e., between 12:1 to 16:1. Catalyst recovery is easy due to the magnetic properties of nanoferrite, which can be effectively reused up to 4 times with less than 10% loss of catalytic efficiency.

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Section: Biodiesel Synthesis Route—transesterificationmentioning

confidence: 99%

Nanoferrites heterogeneous catalysts for biodiesel production from soybean and canola oil: a review

et al. 2021

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“…Previous studies using ion-exchange resin as the catalyst for the conversion of vegetable oil and other bulk substrates (Chakrabarti and Sharma, 1993;Tejero et al, 2016;Soto et al, 2018) show that external diffusion does not control the rate of reaction, unless the reaction system is very viscous or the agitation speed is insufficient, but poor dispersion of the catalyst can lead to a reduction in the activity (Chakrabarti and Sharma, 1993). Indeed, Amberlyst 45 is a macroreticular resin (Guilera et al, 2015) and, hence, it presents porosity independent on swelling (Ramírez et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

“…Quantification of the fatty acid ethyl ester (FAEE) obtained by ethanolysis of vegetable oil was performed as previously reported (da Silva et al, 2015).…”

Section: Quantification Of the Reaction Mixturementioning

confidence: 99%

Solid Acid Resin Amberlyst 45 as a Catalyst for the Transesterification of Vegetable Oil

et al. 2020

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Commercial transesterification of vegetable oil to biodiesel using alkaline hydroxides requires expensive refined vegetable oil and anhydrous alcohols to avoid saponification. These issues are not present in the acid-catalyzed process; however, the challenge still lies in developing stable and active solid acid catalysts. Herein, Amberlyst 45, a resin for high-temperature application, was efficiently used for biodiesel production by the methanolysis or ethanolysis of vegetable oil. Yields of up to 80 and 84% were obtained for the fatty acid methyl ester and the fatty acid ethyl ester, respectively. Two processes are proposed and showed to be efficient: (i) incremental addition of alcohol along with the reaction for both methanolysis and ethanolysis; or (ii) one-pot reaction for ethanolysis using oil/ethanol molar ratio of 1/18. The catalytic system used also showed to be compatible with used oil (2.48 ± 0.03 mg NaOH g oil −1) and to the presence of water (10-20 wt. % based on the alcohol), allowing the use of waste oil and hydrated alcohol.

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“…Hoje, o setor de transportes tem grande demanda por diesel de petróleo e é considerado a principal fonte de poluição da atmosfera (SKORUPSKAITE; MAKAREVICIENE; GUMBYTE, 2016). O biodiesel aparece neste cenário como um combustível alternativo (SILVA et al, 2015), porém este setor irá sofrer alterações significativas relacionadas à substituição de combustíveis fósseis por biocombustíveis (SKORUPSKAITE; MAKAREVICIENE; GUMBYTE, 2016). A biomassa residual pode ser aproveitada de várias maneiras como por exemplo: i) misturada com ração para animais e peixes por ser rica em proteínas;…”

Section: Impacto Político-social Sobre O Biodieselunclassified

“…Os álcoois utilizados são metanol (rota metílica), etanol (rota etílica) ou butanol e cada qual apresenta um comportamento diferente nas reações de esterificação e transesterificação (VÖLZ, 2009). Segundo o autor, este fato pode ser entendido pela formação de ligações de hidrogênios entre o etanol e água que são energeticamente mais estáveis que as interações de Van der Waals entre o etanol e biodiesel, favorecendo a separação do glicerol do meio (SILVA et al, 2015).A vantagem da rota etílica, é da grande oferta do etanol de cana de açúcar por todo território nacional influenciando nos custos de produção do biodiesel(SILVA et al, 2015;VÖLZ, 2009), além do ponto de vista ambiental de ser um reagente sustentável. Silva et al(2015)ressalta que o metanol utilizado no país é importado, sendo uma desvantagem sob certas condições políticas e econômicas.…”

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Síntese de ésteres etílicos de ácido graxos por transesterificação direta de biomassa de microalga marinha <i>Chlorella minutissima</i>

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Separation of the Glycerol-Biodiesel Phases in an Ethyl Transesterification Synthetic Route Using Water

Cited by 11 publications

References 2 publications

Nanoferrites heterogeneous catalysts for biodiesel production from soybean and canola oil: a review

Nanoferrites heterogeneous catalysts for biodiesel production from soybean and canola oil: a review

Solid Acid Resin Amberlyst 45 as a Catalyst for the Transesterification of Vegetable Oil

Síntese de ésteres etílicos de ácido graxos por transesterificação direta de biomassa de microalga marinha <i>Chlorella minutissima</i>

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