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Publication . Article . 2017

Enhancement of biogas production from Ulva sp. by using solid-state fermentation as biological pretreatment

Nesrine Ben Yahmed; Hélène Carrère; M. Nejib Marzouki; Issam Smaali;
Closed Access
Published: 01 Nov 2017 Journal: Algal Research, volume 27, pages 206-214 (issn: 2211-9264, Copyright policy )
Publisher: Elsevier BV
Country: France
Abstract

Abstract The green macroalgal biomass corresponds to an emerging and promising biofuel feedstock. Their biological pretreatment and energetic conversion to biomethane were investigated and the enhancement of biogas production using the solid-state fermentation (SSF) as an eco-friendly innovative pretreatment of Ulva sp. was precisely assessed. Compared to conventional acid and alkali pretreatments, the highest methane potential of 153 ± 3 mL CH 4 g − 1 VS with an anaerobic biodegradability of 57% was obtained using SSF pretreatment with a locally isolated Aspergillus fumigatus SL1 strain. It was 132 ± 2 mL CH 4 g − 1 VS for raw Ulva sp. with biodegradability of 49%. Acid pretreatment with 4% HCl at 150 °C had a negative effect on Ulva sp.'s methane potential while alkali pretreatment with 4% NaOH at 20 °C showed a significant effect. The proposed SSF-based pretreatment enhanced therefore biogas production of 21% and permitted an eco-friendly valorization of large amounts of abundant macroalgae.

Subjects by Vocabulary

Microsoft Academic Graph classification: Solid-state fermentation Anaerobic digestion Methane potential Biotechnology business.industry business Food science Biogas Biodegradation Chemistry Fermentation Biogas production Biomass

Subjects

Agronomy and Crop Science, pretreatment, methane potential, green-macroalgae, solid-state fermentation, anaerobic digestion, biogas, [SDV]Life Sciences [q-bio], [SDE]Environmental Sciences, [SDV] Life Sciences [q-bio], [SDE] Environmental Sciences

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