Optimization of dark fermentative H2 production from microalgal biomass by combined (acid+ultrasonic) pretreatment

Yeo Myeong Yun, Kyung Won Jung, Dong Hoon Kim, You Kwan Oh, Si Kyung Cho, Hang Sik Shin

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

In this study, individual pretreatments (acid and ultrasonic) and a combination of these pretreatments were optimized to enhance the efficiency of dark fermentative hydrogen production (DFHP) from microalgal biomass. The experimental results show that the maximum H2 production performance of 42.1mL H2/g dry cell weight (dcw) was predicted at 0.79% (v/w) HCl and at a specific energy input (SEI) of 49,600kJ/kg dcw in the combined pretreatment, while it was limited in both individual pretreatments. Repeated batch testing of the predicted optimal conditions revealed that the combined pretreatment conditions for DFHP from microalgal biomass were successfully optimized by increasing the solubilization of the feedstock and by reducing the formation of the toxic 5-hydroxymethylfurfural (HMF).

Original languageEnglish
Pages (from-to)220-226
Number of pages7
JournalBioresource Technology
Volume141
DOIs
StatePublished - Aug 2013

Keywords

  • 5-Hydroxymethylfurfural
  • Combined pretreatment
  • Dark fermentative hydrogen production
  • Microalgal biomass
  • Response surface methodology

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