Cited by 230Thermochemical Biomass Conversion ProcessesAdsorption and biosorption for pollutant removalSoil Carbon and Nitrogen Dynamics

Critical impacts of pyrolysis conditions and activation methods on application-oriented production of wood waste-derived biochar

He, Mingjing, Xu, Zibo, Sun, Yuqing, Chan, P.S., Lui, Iris, Tsang, Daniel C.W.·2021·Bioresource Technology

Abstract

Wood waste-derived biochar with tunable carbon structure and surface functionality has a great potential for various environmental applications and circular economy; however, a holistic understanding on the application-oriented production of high-efficacy biochar is lacking. Thus, the co-impacts of different pyrolysis conditions (temperature and duration) and activation methods (steam, CO 2, and acid pretreatment) on the biochar properties were first investigated. A temperature of 650 ℃ was effective in forming carbonized structure in biochar, while 750 ℃ was critical for the porous structure development. A longer pyrolysis duration (>60 min) enhanced the pore volume without compromising the yield. The activated biochar exhibited a larger pore volume (2.1- to 2.9-fold of pristine biochar) for potential high-end emerging applications. The acid pretreatment effectively removed dissolved organic carbon and most metals from the biochar. This study provides an essential guidance on the fit-for-purpose designs of biochar production conditions for sustainable wood waste management.

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Crossref · 10.1016/j.biortech.2021.125811

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38 of 38 references verified0 citation errors · 0 not checkable

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  • The effectiveness of biochar depends on its physical and chemical properties, which are affected by production factors and operating settings such as raw material type, thermochemical conversion process, temperature, time, heating rate, and post-production processes.

    “the effectiveness of biochar depends on its physical and chemical properties, which are affected by various production factors and operating settings, such as the type of raw material and the thermochemical conversion process used to produce the biochar, temperature, time, and heating rate, etc., in addition to the post-production processes.265,266”

    From Technologies and perspectives for achieving carbon neutrality (2021) · cites this paper as [266]

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Authors
He, M., Xu, Z., Sun, Y., Chan, P. S., Lui, I., & Tsang, D. C. W.
Affiliations
  • Hong Kong Polytechnic University (HK)
  • Government of Hong Kong (HK)
Corresponding author
Tsang, Daniel C.W.
Venue
Bioresource Technology
Publisher
Elsevier BV
Published
2021-12
Volume
341
Pages
125811
ISSN
0960-8524 (ISSN-L)
OpenAlex
W3196109431
Cited by
230
References
38
Citations by year
2026: 31 · 2025: 39 · 2024: 48 · 2023: 58 · 2022: 46 · 2021: 8
FWCI
12.14
Type
journal article
Language
en
Open access
closed
Locations
  • Bioresource Technology (publishedVersion)
  • PubMed (publishedVersion)
  • Rare & Special e-Zone (The Hong Kong University of Science and Technology) (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, wood waste, pyrolysis temperature, pyrolysis duration, biochar activation, steam activation, CO2 activation, acid pretreatment, pore volume, carbon structure, surface functionality, dissolved organic carbon removal, metal removal, wood waste management, circular economy
MeSH terms
Pyrolysis, Charcoal, Steam, Wood

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