The use of the carbon/nitrogen ratio and specific organic loading rate as tools for improving biohydrogen production in fixed-bed reactors☆

Highlights • The effects of the carbon/nitrogen ratios of 40, 90, 140, and 190 on hydrogen production are evaluated by varying the nitrogen source in an upflow fixed-bed anaerobic reactor.• An optimal C/N ratio of 137 to produce 3.5 mol H2 mol−1 sucrose is estimated by a mathematical approximation.• Continuous decreases in the specific organic loading rate as a function of time seemed to be responsible for the instability of the system.• A microbial biology analysis identified hydrogen-producing and -consuming microorganisms from natural inoculum.

• Publication year

  2014

• Venue

  Biotechnology Reports

• Publication date

  2014-11-04

• Fields of study

  Medicine, Chemistry, Engineering, Environmental Science

• Identifiers
  DOI 10.1016/j.btre.2014.10.010PMID 28626682PMCID 5466190
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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