Biocatalysis: Towards ever greener biodiesel production

Medina, Alfonso Robles; Moreno, Pedro A. González; Esteban-Cerdán, L.; Grima, E. Molina

doi:10.1016/j.biotechadv.2008.10.008

Cited by 388 publications

(239 citation statements)

References 85 publications

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“…The highest percentage of biodiesel production costs is caused by the price of the feedstock used (Robles-Medina et al, 2009), so the search for raw materials with low cost has become a key point towards economic competitiveness of this biofuel (Michelin et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Assessment of process variables on the use of macauba pulp oil as feedstock for the continuous production of ethyl esters under pressurized conditions

Colonelli

Trentini

Santos

et al. 2017

Braz. J. Chem. Eng.

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-This study evaluated the potential of macauba pulp oil (MPO) as a feedstock for continuous ester production using ethanol under pressurized conditions. Experiments were performed in order to obtain data for the effect of process variables on ethyl ester (FAEE) and free fatty acid (FFA) conversion in a catalyst-free process. From the results, it appears that the MPO to ethanol mass ratio and the pressure were the variables with more favorable effect on the evaluated response variables. The addition of n-hexane caused an increase in the production of esters; however, this had a negative effect on FFA conversion. The addition of water was unfavorable for oil processing with high acidity. In this process, esterification and transesterification occur simultaneously, and the high FFA content in MPO provides high yields (85 wt% of esters; 93% FFA conversion) at low temperature, since the esterification reaction rate is higher than the transesterification. The decomposition of fatty acids was evaluated and levels <5% were observed under the evaluated experimental conditions.

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Section: Introductionmentioning

confidence: 99%

Assessment of process variables on the use of macauba pulp oil as feedstock for the continuous production of ethyl esters under pressurized conditions

Colonelli

Trentini

Santos

et al. 2017

Braz. J. Chem. Eng.

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“…Biodiesel is a processed fuel derived from the renewable resources such as vegetable oils and animal fats, which can replace a significant percentage of petroleum diesel because its physical and chemical properties and energy content are similar to those of petroleum diesel (Robles-Medina et al 2009). Biodiesel is more clean than the petroleum diesel as the emission of particulates, CO, and unburned hydrocarbons from biodiesel combustion are all lower than that those from petroleum diesel (Santori et al 2012), therefore, it is theoretically a renewable, non-toxic and biodegradable diesel fuel * Author for correspondence: liyx108@163.com (Knothe 2010).…”

Section: Introductionmentioning

confidence: 99%

Optimization of Lipase-Catalyzed Transesterification of Cotton Seed Oil for Biodiesel Production Using Response Surface Methodology

Dong

2016

Braz. arch. biol. technol.

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The aim of this work was to study the biodiesel production from cotton seed oil by lipase produced by Pichia guilliermondii lipase, which was immobilized onto hydrophobic magnetic particles (HMPs). The optimum reaction conditions were determined for lipase dosage, methanol-to-oil molar ratio, temperature and water content. Using response surface methodology, a quadratic polynomial equation was obtained for fatty acid methyl esters (FAMEs) content by multiple regression analysis. Verification experiments confirmed the validity of the predicted model. The optimal conditions for the enzymatic transesterification were temperature of 38.76 , 31.3% immobilized lipase, 10.4% water content, and a methanol-to-oil molar ratio of 4.715:1. The gas chromatography-mass spectrometry showed that biodiesel was mainly composed of the methyl esters of hexadecanoic, 9,12-octadecadienoic and 9-octadecadienoic acid.

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“…Industrial methodologies used for biodiesel elaboration, which utilizes homogeneous alkaline transesterification of comestible oils or animal fat with methanol, has high ester yields (>95%) in short reaction times [157,158]. However, this route has some drawbacks, such as production of a high quantity of highly alkaline wastewater and difficulty of catalyst recovery.…”

Section: Biodieselmentioning

confidence: 99%

“…However, this route has some drawbacks, such as production of a high quantity of highly alkaline wastewater and difficulty of catalyst recovery. Moreover, the high-price/high-quality raw materials (acidity less than 0.5%) required in such process is economically inconvenient, hindering for biodiesel to economically compete with petro-diesel [157][158][159]. Lipases (glycerol ester hydrolase, EC 3.1.1.3) are alternative biocatalysts that can be used to overcome the drawbacks related with the currently homogeneous alkaline transesterification route [158].…”

Section: Biodieselmentioning

confidence: 99%

The Protagonism of Biocatalysis in Green Chemistry and Its Environmental Benefits

et al. 2017

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Abstract:The establishment of a bioeconomy era requires not only a change of production pattern, but also a deep modernization of the production processes through the implementation of novel methodologies in current industrial units, where waste materials and byproducts can be utilized as starting materials in the production of commodities such as biofuels and other high added value chemicals. The utilization of renewable raw resources and residues from the agro-industries, and their exploitation through various uses and applications through technologies, particularly solid-state fermentation (SSF), are the main focus of this review. The advocacy for biocatalysis in green chemistry and the environmental benefits of bioproduction are very clear, although this kind of industrial process is still an exception and not the rule. Potential and industrial products, such as biocatalysts, animal feed, fermentation medium, biofuels (biodiesel, lignocelulose ethanol, CH 4 , and H 2 ), pharmaceuticals and chemicals are dealt with in this paper. The focus is the utilization of renewable resources and the important role of enzymatic process to support a sustainable green chemical industry.

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Biocatalysis: Towards ever greener biodiesel production

Cited by 388 publications

References 85 publications

Assessment of process variables on the use of macauba pulp oil as feedstock for the continuous production of ethyl esters under pressurized conditions

Assessment of process variables on the use of macauba pulp oil as feedstock for the continuous production of ethyl esters under pressurized conditions

Optimization of Lipase-Catalyzed Transesterification of Cotton Seed Oil for Biodiesel Production Using Response Surface Methodology

The Protagonism of Biocatalysis in Green Chemistry and Its Environmental Benefits

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