Biochar production from lignocellulosic and nonlignocellulosic biomass using conventional and microwave heating

Christopher Nzediegwu, M. Anne Naeth, Scott X. Chang

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

Biochars produced via pyrolysis of lignocellulosic and/or nonlignocellulosic biomasses have received increasing interest for use as soil amendments for sequestering carbon, regulating nutrient availability and immobilizing contaminants due to several attractive properties such as their large surface area, stable carbon (resistant to decay), and high ash content. While the impact of certain parameters such as feedstock type and pyrolysis condition on biochar properties has been well established, the impact of the heating method is still poorly understood. This Chapter describes two heating methods, conventional and microwave-assisted heating, widely used for pyrolysis. We discuss advances in the production of biochars using microwave-assisted pyrolysis, which is a newer technology than conventional pyrolysis. Based on the literature and our own research, we compare conventional and microwave-assisted pyrolysis and discuss the advantages and challenges associated with microwave-assisted pyrolysis.

Original languageEnglish
Title of host publicationBiochar in Agriculture for Achieving Sustainable Development Goals
PublisherElsevier
Pages85-95
Number of pages11
ISBN (Electronic)9780323853439
ISBN (Print)9780323853446
DOIs
StatePublished - 1 Jan 2022
Externally publishedYes

Keywords

  • Biochar
  • biomass
  • conduction
  • conventional pyrolysis
  • dielectric heating
  • dielectric loss factor
  • microwave absorber
  • microwave-assisted pyrolysis

ASJC Scopus subject areas

  • General Agricultural and Biological Sciences
  • General Environmental Science

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