Recycling Strategy for Bioaqueous Phase via Catalytic Wet Air Oxidation to Biobased Acetic Acid Solution

Songbo He*, Anton Bijl, Patryk Kamil Barana, Leon Lefferts, Sascha R.A. Kersten, Gerrit Brem

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

4 Citations (Scopus)
26 Downloads (Pure)

Abstract

The bioaqueous phase generated during biomass conversion to biofuel and biochemicals, e.g., fast pyrolysis and ex situ catalytic pyrolysis, contains a large number of organics, leading to a high chemical oxygen demand (COD) for its treatment. In this study, we demonstrate its catalytic conversion to bioacetic acid solution and propose a recycling strategy thereof. We found that the diluted bioaqueous phase (e.g., C content <0.5 wt %) can be selectively (>90%) converted to acetic acid with nondetectable impurities in solution. The solution contains 1.3-1.5 wt % acetic acid and can be directly used for demineralization of biomass in the biorefineries. This recycling strategy enhances the sustainability of the biobased economy and sheds light on production of biobased acetic acid, which has been recognized as a smart drop-in chemical.

Original languageEnglish
Pages (from-to)14694-14699
JournalACS Sustainable Chemistry and Engineering
Volume8
Issue number39
DOIs
Publication statusPublished - 5 Oct 2020

Keywords

  • UT-Hybrid-D
  • Biochemicals
  • Biomass
  • Biorefinery
  • Catalytic fast pyrolysis
  • Circular economy
  • Leaching
  • Wastewater
  • Advanced oxidation

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