Improving biogas production from microalgae by enzymatic pretreatment

Bioresource Technology
Fabiana PassosIvet Ferrer

Abstract

In this study, enzymatic pretreatment of microalgal biomass was investigated under different conditions and evaluated using biochemical methane potential (BMP) tests. Cellulase, glucohydrolase and an enzyme mix composed of cellulase, glucohydrolase and xylanase were selected based on the microalgae cell wall composition (cellulose, hemicellulose, pectin and glycoprotein). All of them increased organic matter solubilisation, obtaining high values already after 6h of pretreatment with an enzyme dose of 1% for cellulase and the enzyme mix. BMP tests with pretreated microalgae showed a methane yield increase of 8 and 15% for cellulase and the enzyme mix, respectively. Prospective research should evaluate enzymatic pretreatments in continuous anaerobic reactors so as to estimate the energy balance and economic cost of the process.

References

Aug 3, 2010·Bioresource Technology·J B K ParkA N Shilton
May 6, 2014·Applied and Environmental Microbiology·Camilo MuñozMariella Rivas
Sep 27, 2014·Bioresource Technology·Fabiana PassosIvet Ferrer
Feb 7, 2015·Biotechnology Advances·E GünerkenR H Wijffels

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Citations

Jul 28, 2016·Journal of Biotechnology·Viktor KlassenJan H Mussgnug
May 8, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Jose Antonio MagdalenaCristina González-Fernandez
Jul 1, 2017·Water Environment Research : a Research Publication of the Water Environment Federation·Yousef M SobohRonald C Sims
May 28, 2019·Applied Biochemistry and Biotechnology·Olivia CórdovaRolando Chamy

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