Effect of conductive material for overcoming inhibitory conditions derived from red algae-based substrate on biohydrogen production

Do Hyung Kim, Jeong Jun Yoon, Sang Hyoun Kim, Jeong Hoon Park

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Marine biomass contains sugars that can generate high value-added energy; however, it inevitably produces various by-products such as formic and levulinic acids and 5-hydroxylmethyl furfural (5-HMF) during the extraction process. Thus, the aim of this study was to evaluate the efficacy of conductive carriers as a means to overcome hydrogen production inhibition with various byproducts. As a result, under a mixed sugar condition in which metabolic delay may occur via diauxic growth, a magnetite (Fe3O4) supplement resulted in a 64% increase in total hydrogen production. The hydrogen production yield and maximum production rate were 1.7 mol-H2/mol-consumed sugar and 15.5 mL/h, respectively. 5-HMF had an inhibitory effect at all concentration, whereas formic acid and levulinic acid caused hormesis at concentration below 1.1 and 3.0 g/L, respectively. However, regardless of the type of toxic substance, the magnetite supplement resulted in a greater than 20% increase in hydrogen production at each concentration less than 2, 3, and 2 g/L of formic acid, levulinic acid, and 5-HMF, respectively.

Original languageEnglish
Article number119059
JournalFuel
Volume285
DOIs
Publication statusPublished - 2021 Feb 1

Bibliographical note

Publisher Copyright:
© 2020 Elsevier Ltd

All Science Journal Classification (ASJC) codes

  • General Chemical Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

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