Cited by 146Thermochemical Biomass Conversion ProcessesAdsorption and biosorption for pollutant removalSoil Carbon and Nitrogen Dynamics

Recent advancements in biochar preparation, feedstocks, modification, characterization and future applications

Vijayaraghavan, K.·2019·Environmental Technology Reviews

Abstract

Biochar is a stable carbon-rich product synthesized from biological materials through different heating techniques. The main aim of this review is to evaluate various biochar production methods, parameters affecting the production of biochar, facilities to investigate the composition and structure of biochar, mechanism associated with production of biochar as well as various modification procedures to suit biochar for different applications. Various methods used to synthesize biochar include pyrolysis, torrefaction, gasification, hydrothermal and flash carbonization. Several factors such as feedstock composition and type, pyrolysis conditions such as temperature and time strongly influences the property of synthesized biochar. The physico-chemical properties of biochar strongly influence the role of biochar in several applications such as fuel cells, biosorption, agriculture, supercapacitors, catalyst/support and environmental remediation. It was identified through research efforts that the properties of biochar can be altered using various chemical or physical agents to suit various applications. Thus, the present review consolidates recent advancements in biochar research with special attention towards contaminant remediation and agricultural applications.

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Crossref · 10.1080/21622515.2019.1631393

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  • Steam modification increases surface areas of biochar by corrosion of biochar surface and release of additional syngas (mainly hydrogen).

    “The surface areas of biochar by steam-modification were increased, which was attributed to corrosion of the biochar surface and the release of additional syngas (mainly in the form of hydrogen) (Vijayaraghavan 2019).”

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Authors
Vijayaraghavan, K.
Affiliations
Indian Institute of Technology Madras (IN)
Corresponding author
Vijayaraghavan, K.
Venue
Environmental Technology Reviews
Published
2019-01-01
Volume
8
Issue
1
Pages
47-64
ISSN
  • 2162-2515 (ISSN-L)
  • 2162-2523
OpenAlex
W2951574994
Cited by
146
References
134
Citations by year
2026: 23 · 2025: 20 · 2024: 25 · 2023: 25 · 2022: 25 · 2021: 17 · 2020: 9 · 2019: 2
FWCI
4.67
Type
journal article
Language
en
Open access
closed
Locations
  • Environmental Technology Reviews (publishedVersion)
  • National University of Singapore (submittedVersion)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
Keywords
biochar, biochar production, pyrolysis, torrefaction, gasification, hydrothermal carbonization, feedstock composition, pyrolysis conditions, biochar modification, physicochemical properties, biosorption, contaminant remediation, agricultural applications, supercapacitors, catalyst supports, fuel cells

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