Bio-hydrogen and Methane Production from Lignocellulosic Materials

Salakkam, Apilak; Plangklang, Pensri; Sittijunda, ‪Sureewan; Kongkeitkajorn, Mallika Boonmee; Lunprom, Siriporn; Reungsang, Alissara

doi:10.5772/intechopen.85138

Cited by 11 publications

(2 citation statements)

References 208 publications

(280 reference statements)

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“…Moreover, alkaline pre-treatments can be carried out at a relatively low temperature and pressure, with obvious advantages [24]. More recently, enzymatic hydrolysis after alkaline pre-treatment, gave superior sugar yield (up to 1.75 folds) using NaOH compared to Ca(OH) 2 [25]. However, a detoxification step could be required before the enzymatic hydrolysis to remove inhibitors possibly generated in the black liquor during the pre-treatment [3].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Production from Enzymatic Hydrolysates of Alkali Pre-Treated Giant Reed (Arundo donax L.)

Vasmara¹,

Cianchetta

Marchetti³

et al. 2022

Energies

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The perennial rhizomatous grass giant reed (Arundo donax L.) can be exploited to produce hydrogen by dark fermentation. This implies a high availability of simple sugars, like glucose and xylose, and, thus, a pre-treatment is necessary to remove lignin and expose the holocellulose to enzymatic attack. This study aimed at evaluating the hydrogen production from giant reed hydrolysates. Giant reed dry meal was pre-treated with diluted NaOH (1.2% weight/weight), then the solid fraction was separated from the alkaline black liquor by filtration, enzymatically hydrolyzed with a cellulase blend (Cellic CTec2), and fermented in mesophilic batch conditions with a microbial consortium derived from pig slurry. The impact on hydrogen yield of initial pH was evaluated by comparing the hydrogen production from hydrolysates with not adjusted (5.3) or adjusted initial pH (8.7) using NaOH or alkaline black liquor. The highest hydrogen yield, 2.0 mol/mol of hexoses, was obtained with alkaline initial pH 8.7, regardless of how the pH adjustment was managed. The yield was 39% higher than that obtained in reactors with initial pH 5.3. In conclusion, thermo-alkaline pre-treatment followed by enzymatic saccharification and initial pH adjustment at 8.7 with the black liquor remaining after pre-treatment is a promising strategy to produce hydrogen from giant reeds in dark fermentation.

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Section: Introductionmentioning

confidence: 99%

Hydrogen Production from Enzymatic Hydrolysates of Alkali Pre-Treated Giant Reed (Arundo donax L.)

Vasmara¹,

Cianchetta

Marchetti³

et al. 2022

Energies

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show abstract

“…H2 nem csak külső forrásból vihető be a biogáz termelő közegbe, hanem a szerves szubsztrát hidrolízise során is keletkezik. Ha a mikrobakonzorcium szervesanyag ellátása megfelelő, akkor a szubsztrát fermentációja során felszabaduló H2-t a biogáz fermentáló mikrobaközösség fontos tagjai, a hidrogenotróf metanogének, CH4-t állítanak elő, ezzel biztosítva a H2 alacsony parciális nyomását a közegben [162].…”

Section: áBra: a Hidrogén Tárolási Lehetőségei ([154159] Alapján Módo...unclassified

Komplex anaerob mikroba-közösség alkalmazása a „Power-to-Biomethane” technológiában

Szuhaj

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Application of Hemicellulose in Biohydrogen Production

Akubude

Okafor

Oyedokun³

et al. 2021

Advances in Science, Technology &Amp; Innovation

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Bio-hydrogen and Methane Production from Lignocellulosic Materials

Cited by 11 publications

References 208 publications

Hydrogen Production from Enzymatic Hydrolysates of Alkali Pre-Treated Giant Reed (Arundo donax L.)

Hydrogen Production from Enzymatic Hydrolysates of Alkali Pre-Treated Giant Reed (Arundo donax L.)

Komplex anaerob mikroba-közösség alkalmazása a „Power-to-Biomethane” technológiában

Application of Hemicellulose in Biohydrogen Production

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