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Poster communications

Alkaline pre-treatment to enhance two-stage H2 batch/CH4 continuous production from sunflower stalks

Abstract : Second generation biofuels such as biohythane, a mixture of biohydrogen (H2) and methane (CH4), produced through two-stage H2 / CH4 anaerobic processes represent a promising alternative to fossils fuels. However, lignocellulosic substrates contain recalcitrant structures that require a pretreatment step before anaerobic fermentative processes. In the present study, the impact of alkaline pretreatment (55°C, 24h, 4% NaOH) before a two-stage H2(batch)/CH4(continuous) process was investigated. Alkaline pretreatment did not enhance hydrogen yield probably due to the low solubilization of holocelluloses into soluble sugars. However, alkaline pretreatment enhanced the methane yield resulting in a 30 % increase of the total energy produced compared to the two-stage H2 (batch)/ CH4 (continuous) with no pretreatment.
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Poster communications
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https://hal.inrae.fr/hal-02745236
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Submitted on : Wednesday, June 3, 2020 - 8:28:09 AM
Last modification on : Wednesday, March 23, 2022 - 12:08:20 PM

Identifiers

  • HAL Id : hal-02745236, version 1
  • PRODINRA : 196318

Citation

Florian Monlau, P. Kaparaju, Eric Trably, Jean-Philippe Steyer, Hélène Carrère. Alkaline pre-treatment to enhance two-stage H2 batch/CH4 continuous production from sunflower stalks. 13. World Congress on Anaerobic Digestion: Recovering (bio) Resources for the World. AD13, Jun 2013, Santiago de Compostela, Spain. Juan M. Lema, Fernando Fdez-Polanco, Marta Carballa, Jorge Rodriguez, Sonia Suarez 2013, 171 p., 2013, Proceedings of 13th World Congress on Anaerobic Digestion. ⟨hal-02745236⟩

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