Bioupgrading of the aqueous phase of pyrolysis oil from lignocellulosic biomass: a platform for renewable chemicals and fuels from the whole fraction of biomass

Selim Ashoor, Tae Uk Khang, Young Hoon Lee, Ji Sung Hyung, Seo Young Choi, Sang Eun Lim, Jinwon Lee, Si Jae Park, Jeong Geol Na

Research output: Contribution to journalReview articlepeer-review

1 Scopus citations

Abstract

Pyrolysis, a thermal decomposition without oxygen, is a promising technology for transportable liquids from whole fractions of lignocellulosic biomass. However, due to the hydrophilic products of pyrolysis, the liquid oils have undesirable physicochemical characteristics, thus requiring an additional upgrading process. Biological upgrading methods could address the drawbacks of pyrolysis by utilizing various hydrophilic compounds as carbon sources under mild conditions with low carbon footprints. Versatile chemicals, such as lipids, ethanol, and organic acids, could be produced through microbial assimilation of anhydrous sugars, organic acids, aldehydes, and phenolics in the hydrophilic fractions. The presence of various toxic compounds and the complex composition of the aqueous phase are the main challenges. In this review, the potential of bioconversion routes for upgrading the aqueous phase of pyrolysis oil is investigated with critical challenges and perspectives. Graphical Abstract: [Figure not available: see fulltext.].

Original languageEnglish
Article number34
JournalBioresources and Bioprocessing
Volume10
Issue number1
DOIs
StatePublished - Dec 2023

Bibliographical note

Publisher Copyright:
© 2023, The Author(s).

Keywords

  • Aqueous phase
  • Biological conversion
  • Lignocellulosic biomass
  • Pyrolysis oil
  • Toxicity mitigation

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