Nitrogen containing functional groups of biochar: An overview
Abstract
Biochar is a carbonaceous material produced by thermal treatment, e.g., pyrolysis, of biomass in oxygen-deficient or oxygen-free environment. Nitrogen containing functional groups of biochar have a wide range of applications, such as adsorption of pollutants, catalysis, and energy storage. To date, many methods have been developed and used to strengthen the function of N-containing biochar to promote its application and commercialization. However, there is no review available specifically on the development of biochar technologies concerning nitrogen-containing functional groups. This paper aims to present a review on fractionation, analysis, formation, engineering, and application of N-functional groups of biochar. The effect of influencing factors on biochar N-functional groups, including biomass feedstock, pyrolysis parameters (e.g., temperature), and additional treatment (e.g., N-doping) were discussed in detail to reveal the formation mechanisms and performance of the N-functional groups. Future prospective investigation directions on the analysis and engineering of biochar N-functional groups were also proposed.
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Some nitrogen and sulfur in feedstock materials are lost through gaseous emission during pyrolysis.
“While some nitrogen and sulfur in the feedstock materials are lost through gaseous emission during pyrolysis (Al-Wabel et al. 2013;Leng et al. 2020)”
From Biochar and its importance on nutrient dynamics in soil and plant (2020) · cites this paper as Leng et al. 2020
The nitrogen content of biochar decreases with increasing pyrolytic temperature through gaseous emission.
“While the N content decreases with increasing pyrolytic temperature through gaseous emission (Leng et al. 2020)”
From Biochar and its importance on nutrient dynamics in soil and plant (2020) · cites this paper as Leng et al. 2020
Nitrogen content of biochar decreases with an increase in pyrolytic temperature due to conversion of parts of amino acids into pyridine-N and pyrrolic-N.
“Furthermore, N content of biochar decreases with an increase in the pyrolytic temperature (Fig. 5), due to conversion of parts of amino acids into pyridine-N and pyrrolic-N (Leng et al. 2020).”
From Biochar and its importance on nutrient dynamics in soil and plant (2020) · cites this paper as Leng et al. 2020
Some amino acids, such as arginine containing amide groups, are mostly converted to ammonia or other gaseous forms of nitrogen during biomass pyrolysis and are lost.
“For example, some amino acids, such as arginine containing amide groups, are mostly converted to ammonia or other gaseous forms of N during biomass pyrolysis, and, consequently, they are lost (Leng et al. 2020).”
From Biochar and its importance on nutrient dynamics in soil and plant (2020) · cites this paper as Leng et al. 2020
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- Authors
- Leng, L., Xu, S., Liu, R., Yu, T., Zhuo, X., Leng, S., Xiong, Q., & Huang, H.
- Affiliations
- Nanchang University (CN)
- Jiangxi Agricultural University (CN)
- Corresponding author
- Huang, Huajun
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2020-02
- Volume
- 298
- Pages
- 122286
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W2981194698
- Cited by
- 532
- References
- 134
- Citations by year
- 2026: 78 · 2025: 104 · 2024: 96 · 2023: 85 · 2022: 90 · 2021: 55 · 2020: 23 · 2019: 1
- FWCI
- 3.41
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Bioresource Technology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Natural Science Foundation of China
- 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, nitrogen-containing functional groups, nitrogen doping, pyrolysis, biomass feedstock, pyrolysis temperature, biochar modification, pollutant adsorption, catalysis, energy storage
- MeSH terms
- Adsorption, Charcoal, Nitrogen, Biomass
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