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Bioprocess and Biosystems Engineering

, Volume 39, Issue 10, pp 1611–1617 | Cite as

Continuous enzymatic biodiesel production from coconut oil in two-stage packed-bed reactor incorporating an extracting column to remove glycerol formed as by-product

  • William Costa e Silva
  • Larissa Freitas
  • Pedro C. Oliveira
  • Heizir F. de CastroEmail author
Original Paper

Abstract

The transesterification of coconut oil with ethanol catalyzed by Burkholderia cepacia lipase immobilized on polysiloxane–polyvinyl alcohol was performed in a continuous flow. The experimental design consisted of a two-stage packed-bed reactor incorporating a column with cationic resin (Lewatit GF 202) to remove the glycerol formed as by-product and the reactor performance was quantified for three different flow rates corresponding to space-times from 10 to 14 h. The influence of space-time on the ethyl ester (FAEE) concentrations, yields and productivities was determined. The reactor operation was demonstrated for space-time of 14 h attaining FAEE concentrations of 58.5 ± 0.87 wt%, FAEE yields of 97.3 ± 1.9 % and productivities of 41.6  ± 1.0 mgester g medium −1  h−1. Biodiesel purified samples showed average kinematic viscosity values of 5.5 ± 0.3 mm2 s−1 that meet the criteria established by the American National Standard ASTM (D6751). The immobilized lipase was found to be stable regarding its morphological and catalytic characteristics, showing half-life time (t 1/2) around 1540 h. The continuous packed-bed reactor connected in series with simultaneous glycerol removal has a great potential to attain high level of transesterification yields, raising biodiesel productivity.

Keywords

Biodiesel Packed-bed reactor Lipase Glycerol removal Coconut oil 

Notes

Acknowledgments

The authors gratefully acknowledge the financial support of CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico-Process Number 475403/2012-6) and CAPES (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior).

Supplementary material

449_2016_1636_MOESM1_ESM.doc (142 kb)
Supplementary material 1 (DOC 142 kb)

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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • William Costa e Silva
    • 1
  • Larissa Freitas
    • 1
  • Pedro C. Oliveira
    • 1
  • Heizir F. de Castro
    • 1
    Email author
  1. 1.Engineering School of Lorena-University of São PauloLorenaBrazil

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