An integrated approach to produce biodiesel and monoglycerides by enzymatic interestification of babassu oil (Orbinya sp)

Freitas, Larissa; Rós, Patrícia Caroline Molgero Da; Santos, Júlio César dos; Castro, Heizir F. de

doi:10.1016/j.procbio.2009.05.011

Cited by 78 publications

(65 citation statements)

References 26 publications

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“…Nevertheless, the studied PBR exhibited lowered biodiesel yields compared to the batchwise reactors reported previously (Freitas et al, 2009;Carvalho et al, 2013). For instance, the performance of a STR used by Carvalho et al (2013) to conduct lipase-catalyzed transesterification of babassu oil was superior in terms of the conversion achieved (at the same molar ratio) compared to that of the PBR studied herein.…”

Section: Parametermentioning

confidence: 54%

Performance of an enzymatic packed bed reactor running on babassu oil to yield fatty ethyl esters (FAEE) in a solvent-free system

et al. 2015

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HIGHLIGHTS The performance of packed bed reactor running on babassu oil to yield ethyl esters was assessed. Burkholderia cepacia lipase immobilized on SiO2-PVA composite was used as a catalyst. The molar ratio of babassu oil and ethanol was found as a critical parameter for attaining high yields. The transesterification reaction of babassu oil with ethanol mediated by Burkholderia cepacia lipase immobilized on SiO2-PVA composite was assessed in a packed bed reactor running in the continuous mode. Experiments were performed in a solvent-free system at 50 °C. The performance of the reactor (14 mm ×210 mm) was evaluated using babassu oil and ethanol at two molar ratios of 1:7 and 1:12, respectively, and operational limits in terms of substrate flow rate were determined. The system's performance was quantified for different flow rates corresponding to space times between 7 and 13 h. Under each condition, the impact of the space time on the ethyl esters formation, the transesterification yield and productivity were determined. The oil to ethanol molar ratio was found as a critical parameter in the conversion of babassu oil into the correspondent ethyl esters. The highest transesterification yield of 96.0 ± 0.9% and productivity of 41.1 ± 1.6 mgestergcatalystwere achieved at the oil to ethanol molar ratio of 1:12 and for space times equal or higher than 11 h. Moreover, the immobilized lipase was found stable with respect to its catalytic characteristics, exhibiting a half-life of 32 d.

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Section: Parametermentioning

confidence: 54%

Performance of an enzymatic packed bed reactor running on babassu oil to yield fatty ethyl esters (FAEE) in a solvent-free system

et al. 2015

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“…This enzyme was chosen due to its potential previously identified to synthesize important products, such as biodiesel and monoglycerides. [22][23] The properties of the support (SiO 2 -chitosan) and immobilized derivative were evaluated by X-ray diffraction, Fourier transform infrared spectroscopy (FTIR) and termogravimetry (TG). The influence of the temperature and pH on the activity of the biocatalysts was determined using a surface response methodology.…”

Section: Introductionmentioning

confidence: 99%

Chitosan/siloxane hybrid polymer: synthesis, characterization and performance as a support for immobilizing enzyme

Silva

Oliveira

Giordani

et al. 2011

J. Braz. Chem. Soc.

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O polímero híbrido derivado de siloxano e quitosana foi obtido pela técnica sol-gel, tendo como precursor o tetraetilortosilicato (TEOS). O suporte híbrido obtido foi modificado quimicamente com epicloridrina e utilizado para imobilizar lipase de Burkholderia cepacia. O híbrido SiO 2 -quitosana deu origem a uma nova estrutura macromolecular na qual as partículas inorgânicas encontramse dispersas em escala nanométrica na matriz orgânica e ligadas à matriz por meio de ligações covalentes. Foi realizado um estudo comparativo entre a lipase livre e a imobilizada quanto à influencia do pH e temperatura, parâmetros cinéticos e estabilidade térmica. O pH ótimo para a atividade máxima de hidrólise da lipase imobilizada foi de 6,1, enquanto que para a lipase livre foi de 7,0. A temperatura ótima permaneceu em 50 ºC mesmo depois da imobilização. Os perfis de estabilidade térmica indicaram que o processo de imobilização foi favorável à estabilização da enzima e o derivado epóxi SiO 2 -quitosana foi cerca de 30 vezes mais estável que a lipase livre a 60 ºC.A hybrid polymer derived from siloxane and chitosan was obtained by sol-gel technique using tetraethoxysilane (TEOS) as a precursor. The hybrid support was chemically modified with epichlorohydrin and used to immobilize lipase from Burkholderia cepacia. The hybrid SiO 2 -chitosan formed new macromolecular structure in which the inorganic particles are dispersed at the nanometer scale in the organic host matrix and bounding through covalent bonds. A comparative study between free and immobilized lipase was provided in terms of pH, temperature, kinetic parameters and thermal stability. The pH for maximum hydrolysis activity shifted from 7.0 for the soluble lipase to 6.1 and the optimum temperature remained at 50 °C after immobilization. The patterns of heat stability indicated that the immobilization process provided the stabilization of the enzyme and the epoxy SiO 2 -chitosan derivative was almost 30-fold more stable than soluble lipase at 60 °C.

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“…Considerando os 17 milhões de hectares de floresta onde predominam a palmeira do babaçu e as possibilidades de aproveitamento integral do coco, o babaçu constitui, potencialmente, uma extraordinária fonte de matéria-prima para a produção de biodiesel, e, além disso, as demais partes da palmeira podem ser utilizadas para outros propósitos (FREITAS et al, 2009). …”

Section: Matérias-primas Para Produção De Biodieselunclassified

“…Nesta técnica, a enzima fica retida no interior (poros) ou na superfície de um material que é utilizado como suporte (DE CASTRO et al, 2008 Vários trabalhos são encontrados na literatura que tratam das diferentes técnicas de imobilização de lipases, caracterização dos complexos ativados e aplicações em reações que se processam em meio aquoso ou não-aquoso (SCHMID et al, 2002;PEREZ et al, 2007;MENDES et al, 2007;SANTOS, 2005;FREITAS et al, 2009;SOLINAS, 2007;MOREIRA et al, 2007;FRANCISCO;GOUCH;DEY, 2007;PAULA et al, 2009;ANTCZAK et al, 2009 como glicidol e epicloridrina (GUISAN, 1988;SANTOS et al, 2008b).…”

Section: Técnicas De Imobilização De Enzimasunclassified

Produção enzimática de biodiesel em reator de leito fluidizado a partir da etanólise do óleo de babaçu: estabelecimento das condições reacionais e operacionais

Fidalgo¹

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An integrated approach to produce biodiesel and monoglycerides by enzymatic interestification of babassu oil (Orbinya sp)

Cited by 78 publications

References 26 publications

Performance of an enzymatic packed bed reactor running on babassu oil to yield fatty ethyl esters (FAEE) in a solvent-free system

Performance of an enzymatic packed bed reactor running on babassu oil to yield fatty ethyl esters (FAEE) in a solvent-free system

Chitosan/siloxane hybrid polymer: synthesis, characterization and performance as a support for immobilizing enzyme

Produção enzimática de biodiesel em reator de leito fluidizado a partir da etanólise do óleo de babaçu: estabelecimento das condições reacionais e operacionais

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