Application of an electric field for pretreatment of a feedstock (Laminaria japonica) for dark fermentative hydrogen production

Da Young Jeong, Si Kyung Cho, Hang Sik Shin, Kyung Won Jung

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

When using cellulosic biomass as feedstock for dark fermentative hydrogen production (DFHP), feedstock preparation is essential step for enhancement of biodegradability. In the present work, electric field was newly applied as a novel pretreatment technique to Laminaria japonica, a marine brown algae, as an alternative method for feedstock preparation. A feasibility test was first conducted (20-100V for 30min). The highest H2 yield (93.6mLH2g-1 dry cell weight (dcw)) was achieved at applied voltage of 60V, while the performance was decreased from applied voltage of 80-100V due to increasing formation of hydroxymethylfurfural. Subsequently, electric pretreatment conditions (applied voltage and reaction time) were statistically optimized, and a H2 yield of 102.7mLg-1dcw was recorded with applied voltage 58.5V and reaction time 30min. This was 96.1% of the predicted value. These findings clearly revealed that the application of electric field as pretreatment method has enormous potential as an alternative method for feedstock preparation in DFHP.

Original languageEnglish
Pages (from-to)184-188
Number of pages5
JournalBiomass and Bioenergy
Volume72
DOIs
StatePublished - 1 Jan 2015

Keywords

  • Dark fermentative H production
  • Electric field
  • Feedstock preparation
  • Laminaria japonica
  • Response surface methodology

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