Two-step continuous hydrogen production by immobilized mixed culture on corn stalk

Shaojie Wang, Zhihong Ma and Haijia Su

Renewable Energy, 2018, vol. 121, issue C, 230-235

Abstract: The present study developed a two-step continuous hydrogen production process using immobilized mixed culture with corn stalk as adsorption carrier. The carrier inoculum and hydraulic retention time (HRT) were optimized in batch and semi-continuous tests, respectively. The results showed that the immobilized bacteria could use starch directly, and the highest hydrogen yield of 1.81 mol H2/mol glucose was obtained with a carrier inoculum of 1% in the batch test. The semi-continuous test exhibited a continuous and stable hydrogen production for 20 days at HRT = 48 h, with an average hydrogen production rate of 223.56 mL/L/d. Under these conditions, a two-step continuous test was successfully developed, and the hydrogen production in both two reactors increased linearly for 18 days without any start-up period. The total hydrogen production rate could reach 429.72 mL/L/d. The results indicated the potential of using corn stalk as adsorption carrier for continuous hydrogen production.

Keywords: Continuous hydrogen production; Immobilization; Corn stalk; Mixed culture (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:121:y:2018:i:c:p:230-235

DOI: 10.1016/j.renene.2018.01.015

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