Improving biogas production from microalgae by enzymatic pretreatment

Fabiana Passos; Andrea Hom-Diaz; Paqui Blanquez; Teresa Vicent; Ivet Ferrer

doi:10.1016/j.biortech.2015.08.084

Improving biogas production from microalgae by enzymatic pretreatment

Fabiana Passos, Andrea Hom-Diaz, Paqui Blanquez, Teresa Vicent, Ivet Ferrer

Department of Chemical, Biological and Environmental Engineering

Research output: Contribution to journal › Article › Research › peer-review

87 Citations (Scopus)

Abstract

© 2015 Elsevier Ltd. 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 6 h 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.

Original language	English
Pages (from-to)	347-351
Journal	Bioresource Technology
Volume	199
DOIs	https://doi.org/10.1016/j.biortech.2015.08.084
Publication status	Published - 1 Jan 2016

Keywords

Algae
Enzyme
Hydrolysis
Methane
Solubilisation

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10.1016/j.biortech.2015.08.084

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title = "Improving biogas production from microalgae by enzymatic pretreatment",

abstract = "{\textcopyright} 2015 Elsevier Ltd. 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 6 h 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.",

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TY - JOUR

T1 - Improving biogas production from microalgae by enzymatic pretreatment

AU - Passos, Fabiana

AU - Hom-Diaz, Andrea

AU - Blanquez, Paqui

AU - Vicent, Teresa

AU - Ferrer, Ivet

PY - 2016/1/1

Y1 - 2016/1/1

N2 - © 2015 Elsevier Ltd. 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 6 h 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.

AB - © 2015 Elsevier Ltd. 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 6 h 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.

KW - Algae

KW - Enzyme

KW - Hydrolysis

KW - Methane

KW - Solubilisation

U2 - 10.1016/j.biortech.2015.08.084

DO - 10.1016/j.biortech.2015.08.084

M3 - Article

SN - 0960-8524

VL - 199

SP - 347

EP - 351

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Improving biogas production from microalgae by enzymatic pretreatment

Abstract

Keywords

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