Properties of biochar derived from wood and high-nutrient biomasses with the aim of agronomic and environmental benefits
Open accessAbstract
Biochar production and use are part of the modern agenda to recycle wastes, and to retain nutrients, pollutants, and heavy metals in the soil and to offset some greenhouse gas emissions. Biochars from wood (eucalyptus sawdust, pine bark), sugarcane bagasse, and substances rich in nutrients (coffee husk, chicken manure) produced at 350, 450 and 750°C were characterized to identify agronomic and environmental benefits, which may enhance soil quality. Biochars derived from wood and sugarcane have greater potential for improving C storage in tropical soils due to a higher aromatic character, high C concentration, low H/C ratio, and FTIR spectra features as compared to nutrient-rich biochars. The high ash content associated with alkaline chemical species such as KHCO3 and CaCO3, verified by XRD analysis, made chicken manure and coffee husk biochars potential liming agents for remediating acidic soils. High Ca and K contents in chicken manure and coffee husk biomass can significantly replace conventional sources of K (mostly imported in Brazil) and Ca, suggesting a high agronomic value for these biochars. High-ash biochars, such as chicken manure and coffee husk, produced at low-temperatures (350 and 450°C) exhibited high CEC values, which can be considered as a potential applicable material to increase nutrient retention in soil. Therefore, the agronomic value of the biochars in this study is predominantly regulated by the nutrient richness of the biomass, but an increase in pyrolysis temperature to 750°C can strongly decrease the adsorptive capacities of chicken manure and coffee husk biochars. A diagram of the agronomic potential and environmental benefits is presented, along with some guidelines to relate biochar properties with potential agronomic and environmental uses. Based on biochar properties, research needs are identified and directions for future trials are delineated.
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Increased carbon content (ranging from 62.2 to 92.4%) with an increase in pyrolysis temperature occurs due to a higher degree of polymerization, leading to a more condensed carbon structure in the biochar.
“Increased carbon content (ranging from 62.2 to 92.4%) with an increase in pyrolysis temperature occurs due to a higher degree of polymerization (Domingues et al. 2017), leading to a more condensed carbon structure in the biochar (Lehmann and Joseph, 2009).”
From Biochar physicochemical properties: pyrolysis temperature and feedstock kind effects (2020) · cites this paper as Domingues et al. 2017
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- Authors
- Domingues, R. R., Trugilho, P. F., Silva, C. A., Melo, I. C. N. A. D., Melo, L. C. A., Magriotis, Z. M., & Sánchez-Monedero, M. A.
- Affiliations
- Universidade Federal de Lavras (BR)
- Corresponding author
- Domingues, Rimena R.
- Trugilho, Paulo F.
- Silva, Carlos A.
- Melo, Isabel Cristina N. A. de
- Melo, Leônidas C. A.
- Magriotis, Zuy M.
- ORCID
- Venue
- PLOS ONE
- Publisher
- Public Library of Science (PLoS)
- Published
- 2017-05-11
- Volume
- 12
- Issue
- 5
- Pages
- e0176884
- ISSN
- 1932-6203 (ISSN-L)
- PMC
- PMC5426627
- OpenAlex
- W2613751647
- Cited by
- 654
- References
- 64
- Citations by year
- 2026: 58 · 2025: 100 · 2024: 102 · 2023: 92 · 2022: 63 · 2021: 82 · 2020: 85 · 2019: 46 · 2018: 22 · 2017: 3 · 2012: 1
- FWCI
- 46.61
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- PLoS ONE (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
- Figshare (submittedVersion, cc-by)
- Greater South Information System
- Funders
- Conselho Nacional de Desenvolvimento Científico e Tecnológico (303899/2015-8)
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (PROEX AUXPE 590/2014)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
- Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
- Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
- Keywords
- biochar, pyrolysis temperature, woody biomass, eucalyptus sawdust, pine bark, sugarcane bagasse, coffee husk, chicken manure, soil amendment, liming, cation exchange capacity, nutrient retention, carbon storage, ash content, heavy metal retention, greenhouse gas emissions reduction, waste recycling
- MeSH terms
- Agriculture, Animals, Carbon, Charcoal, Chickens, Coffee, Electric Conductivity, Environment, Hydrogen-Ion Concentration, Manure, Solubility, Temperature, Volatilization, Water, Wood, X-Ray Diffraction, Spectroscopy, Fourier Transform Infrared, Biomass, Saccharum
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