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Effect of heat pre-treatment temperature on isolation of hydrogen producing functional consortium from soil

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  • Ravindran, Anita
  • Adav, Sunil
  • Yang, Shang-Shyng

Abstract

A functional hydrogen producing consortium was isolated from soil by heat pre-treatment technique and hydrogen production at different substrate concentration was evaluated. The forest soil was heat pre-treated at 65, 80, 95, 105 and 120 °C temperature for 1 h. As revealed by PCR-DGGE analysis and hydrogen yield, the hydrogen producing microbial community changed with increase in heat pre-treatment temperatures giving potential hydrogen producing consortium at 95–105 °C soil pre-treatment. The maximum hydrogen production rate, hydrogen yield and cumulative hydrogen with 15–20 g glucose were 1390–1576 mL/L/day, 1.83–1.93 mol H2/mol glucose, and 2966–3146 mL H2/L, respectively. The metabolic pathways shifted from ethanol-type to acetate–formate type as soil pre-treatment temperature increased from 65 to 120 °C. The soil heat pre-treatment approach is effective for isolating hydrogen producing natural Clostridium consortium from the soil as enumerations of the functional strains need specific temperature range to florish.

Suggested Citation

  • Ravindran, Anita & Adav, Sunil & Yang, Shang-Shyng, 2010. "Effect of heat pre-treatment temperature on isolation of hydrogen producing functional consortium from soil," Renewable Energy, Elsevier, vol. 35(12), pages 2649-2655.
    • Handle: RePEc:eee:renene:v:35:y:2010:i:12:p:2649-2655
    DOI: 10.1016/j.renene.2010.04.010
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    Cited by:

    1. Vinayak Laxman Pachapur & Prianka Kutty & Preetika Pachapur & Satinder Kaur Brar & Yann Le Bihan & Rosa Galvez-Cloutier & Gerardo Buelna, 2019. "Seed Pretreatment for Increased Hydrogen Production Using Mixed-Culture Systems with Advantages over Pure-Culture Systems," Energies, MDPI, vol. 12(3), pages 1-26, February.

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