Microaerobic condition as pretreatment for improving anaerobic digestion: A review

César Huiliñir*, Jhosané Pagés-Díaz, Gustavo Vargas, Sylvana Vega, Yeney Lauzurique, Nicolás Palominos

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

6 Scopus citations

Abstract

Pretreatment of waste before anaerobic digestion (AD) has been extensively studied during the last decades. One of the biological pretreatments studied is the microaeration. This review examines this process, including parameters and applications to different substrates at the lab, pilot and industrial scales, to guide further improvement in large-scale applications. The underlying mechanisms of accelerating hydrolysis and its effects on microbial diversity and enzymatic production were reviewed. In addition, modelling of the process and energetic and financial analysis is presented, showing that microaerobic pretreatment is commercially attractive under certain conditions. Finally, challenges and future perspectives were also highlighted to promote the development of microaeration as a pretreatment before AD.

Original languageEnglish
Article number129249
JournalBioresource Technology
Volume384
DOIs
StatePublished - Sep 2023
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2023 Elsevier Ltd

Keywords

  • Accelerating hydrolysis
  • Methane production
  • Microaeration pretreatment
  • Microaerobic process modelling
  • Microbial diversity

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