Simultaneous metabolism of benzoate and photobiological hydrogen production by Lyngbya sp

Xian-Yang Shi and Han-Qing Yu

Renewable Energy, 2016, vol. 95, issue C, 474-477

Abstract: Cyanobacteria are an inexpensive and sustainable source of photobiological H2 production due to their simple nutritional conditions. Combination of toxic contaminant degradation with H2 production is a promising approach in wastewater treatment. This study demonstrated that Lyngbya sp., a filamentous cyanobacterium, can generate H2 in the presence of benzoate which is a central intermediate during the anaerobic degradation of many aromatic compounds. The highest H2 production rate of 17.05 μmol H2/g Chla/h was obtained in the second cycle and 600 mg/L benzoate was depleted within 64 h in H2 production test. The strain has shown a higher H2-producing capacity, which was comparable to those of certain noted strains such as N2-fixing filamentous Anabaena variabilis PK84 and non-N2-fixing filamentous Microcystis PCC 7806. The co-metabolism of benzoate for H2 production by Lyngbya sp. makes it an interesting model strain for clean energy production and hazardous pollutant removal.

Keywords: Benzoate; Cyanobacteria; Photobiological hydrogen production (search for similar items in EconPapers)
Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:95:y:2016:i:c:p:474-477

DOI: 10.1016/j.renene.2016.04.051

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