Kinetics and equilibria of 5-hydroxymethylfurfural (5-HMF) sequestration from algal hydrolyzate using granular activated carbon

Ralph Rolly Gonzales, Yongseok Hong, Jong Hun Park, Gopalakrishnan Kumar, Sang Hyoun Kim

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14 Citations (Scopus)

Abstract

BACKGROUND: 5-hydroxymethylfurfural (5-HMF), the major by-product in hydrolyzates from lignocelluloses and algal biomass, is known as an inhibitor of several microorganisms as well as a promising precursor for biorefinery. In this study, the feasibility of 5-HMF sequestration was investigated using granular activated carbon (GAC) as the adsorbent. RESULTS: Equilibria for the 5-HMF adsorption onto GAC were derived. Positive isosteric heat values showed the reaction was exothermic and favored at low temperature. The pseudo-second order dynamics and the estimated activation energy, 227.4 kJ mol-1, implied that the removal mechanism would be chemical adsorption. The adsorption was not interfered with by the presence of sugar and sugar compounds were not adsorbed onto GAC. CONCLUSION: Batch and column tests on dilute acid hydrolyzate of red algal biomass showed that GAC adsorption would be a feasible option for sequestration of 5-HMF in hydrolyzate for the biofuel and biorefinery industries.

Original languageEnglish
Pages (from-to)1157-1163
Number of pages7
JournalJournal of Chemical Technology and Biotechnology
Volume91
Issue number4
DOIs
Publication statusPublished - 2016 Apr 1

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Chemical Engineering(all)
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Waste Management and Disposal
  • Pollution
  • Organic Chemistry
  • Inorganic Chemistry

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