Applications of biochar in redox-mediated reactions

Yong Yuan, Nanthi Bolan, Antonin Prévoteau, Meththika Vithanage, Jayanta Kumar Biswas, Yong Sik Ok, Hailong Wang

Research output: Contribution to journalReview article

63 Citations (Scopus)

Abstract

Biochar is chemically more reduced and reactive than the original feedstock biomass. Graphite regions, functional groups, and redox-active metals in biochar contribute to its redox characteristics. While the functional groups such as phenolic species in biochar are the main electron donating moieties (i.e., reducers), the quinones and polycondensed aromatic functional groups are the components accepting electrons (oxidants). The redox capacity of biochar depends on feedstock properties and pyrolysis conditions. This paper aims to review and summarize the various synthesis techniques for biochars and the methods for probing their redox characteristics. We review the abiotic and microbial applications of biochars as electron donors, electron acceptors, or electron shuttles for pollutant degradation, metal(loid)s (im)mobilization, nutrient transformation, and discuss the underlying mechanisms. Furthermore, knowledge gaps that exist in the exploration and differentiation of the electron transfer mechanisms involving biochars are also identified.

Original languageEnglish
Pages (from-to)271-281
Number of pages11
JournalBioresource Technology
Volume246
DOIs
Publication statusPublished - 2017 Dec 1

Fingerprint

Redox reactions
electron
Electrons
Functional groups
functional group
Feedstocks
Metals
metal
Quinones
Graphite
Oxidants
oxidant
graphite
pyrolysis
Nutrients
mobilization
biochar
Biomass
Pyrolysis
Degradation

Keywords

  • Biochar
  • Functional groups
  • Graphite regions
  • Pyrolysis
  • Redox reactions

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

Cite this

Yuan, Y., Bolan, N., Prévoteau, A., Vithanage, M., Biswas, J. K., Ok, Y. S., & Wang, H. (2017). Applications of biochar in redox-mediated reactions. Bioresource Technology, 246, 271-281. https://doi.org/10.1016/j.biortech.2017.06.154

Applications of biochar in redox-mediated reactions. / Yuan, Yong; Bolan, Nanthi; Prévoteau, Antonin; Vithanage, Meththika; Biswas, Jayanta Kumar; Ok, Yong Sik; Wang, Hailong.

In: Bioresource Technology, Vol. 246, 01.12.2017, p. 271-281.

Research output: Contribution to journalReview article

Yuan, Y, Bolan, N, Prévoteau, A, Vithanage, M, Biswas, JK, Ok, YS & Wang, H 2017, 'Applications of biochar in redox-mediated reactions', Bioresource Technology, vol. 246, pp. 271-281. https://doi.org/10.1016/j.biortech.2017.06.154
Yuan Y, Bolan N, Prévoteau A, Vithanage M, Biswas JK, Ok YS et al. Applications of biochar in redox-mediated reactions. Bioresource Technology. 2017 Dec 1;246:271-281. https://doi.org/10.1016/j.biortech.2017.06.154
Yuan, Yong ; Bolan, Nanthi ; Prévoteau, Antonin ; Vithanage, Meththika ; Biswas, Jayanta Kumar ; Ok, Yong Sik ; Wang, Hailong. / Applications of biochar in redox-mediated reactions. In: Bioresource Technology. 2017 ; Vol. 246. pp. 271-281.
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