Pretreatment of macroalgal biomass for biogas production

Maria Montingelli, Khaled Benyounis, Joseph Stokes, Abdul-Ghani Olabi

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

The objective of this study was to evaluate the effect of beating (BT), ball milling (BM) and microwave pretreatment (MW) on the conversion of the macroalgae Laminaria spp. into biogas by anaerobic digestion (AD). The AD was carried out in batch at 38 ± 1 C, over an incubation time of 25 days. After 3 days of
digestion the BT pretreated samples yielded the best result by achieving a methane increase of up to 37% with respect to the raw seaweed. At 25 days, both BM and MW pretreatment lowered the methane yield with respect to the raw seaweed. Since BT produced higher methane yields with respect to the untreated sample, it was considered for energy balance analysis. After 3 days of digestion, the BT resulted in an energy gain of 28%, while at the end of digestion the break-even point was reached.
Original languageEnglish
Pages (from-to)202–209
Number of pages8
JournalEnergy Conversion and Management
Volume108
DOIs
Publication statusPublished - 15 Jan 2016

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Biogas
Seaweed
Methane
Biomass
Anaerobic digestion
Ball milling
Microwaves
Energy balance

Keywords

  • Macroalgae,
  • Laminaria spp.

Cite this

Montingelli, Maria ; Benyounis, Khaled ; Stokes, Joseph ; Olabi, Abdul-Ghani. / Pretreatment of macroalgal biomass for biogas production. In: Energy Conversion and Management. 2016 ; Vol. 108. pp. 202–209.
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Montingelli, M, Benyounis, K, Stokes, J & Olabi, A-G 2016, 'Pretreatment of macroalgal biomass for biogas production', Energy Conversion and Management, vol. 108, pp. 202–209. https://doi.org/10.1016/j.enconman.2015.11.008

Pretreatment of macroalgal biomass for biogas production. / Montingelli, Maria; Benyounis, Khaled; Stokes, Joseph; Olabi, Abdul-Ghani.

In: Energy Conversion and Management, Vol. 108, 15.01.2016, p. 202–209.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Pretreatment of macroalgal biomass for biogas production

AU - Montingelli, Maria

AU - Benyounis, Khaled

AU - Stokes, Joseph

AU - Olabi, Abdul-Ghani

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AB - The objective of this study was to evaluate the effect of beating (BT), ball milling (BM) and microwave pretreatment (MW) on the conversion of the macroalgae Laminaria spp. into biogas by anaerobic digestion (AD). The AD was carried out in batch at 38 ± 1 C, over an incubation time of 25 days. After 3 days of digestion the BT pretreated samples yielded the best result by achieving a methane increase of up to 37% with respect to the raw seaweed. At 25 days, both BM and MW pretreatment lowered the methane yield with respect to the raw seaweed. Since BT produced higher methane yields with respect to the untreated sample, it was considered for energy balance analysis. After 3 days of digestion, the BT resulted in an energy gain of 28%, while at the end of digestion the break-even point was reached.

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