Cited by 432Polymer-Based Agricultural EnhancementsSoil Carbon and Nitrogen DynamicsPhosphorus and nutrient management

Biochar-based slow-release of fertilizers for sustainable agriculture: a mini review

Open access
Wang, Chongqing, Luo, Dan, Zhang, Xue, Huang, Rong, Cao, Yijun, Liu, Gonggang, Zhang, Yingshuang, Wang, Hui·2022·Environmental Science and Ecotechnology

Abstract

Increasing global population and decreasing arable land pose tremendous pressures to agricultural production. The application of conventional chemical fertilizers improves agricultural production, but causes serious environmental problems and significant economic burdens. Biochar gains increasing interest as a soil amendment. Recently, more and more attentions have been paid to biochar-based slow-release of fertilizers (SRFs) due to the unique properties of biochar. This review summarizes recent advances in the development, synthesis, application, and tentative mechanism of biochar-based SRFs. The development mainly undergoes three stages: (i) soil amendment using biochar, (ii) interactions between nutrients and biochar, and (iii) biochar-based SRFs. Various methods are proposed to improve the fertilizer efficiency of biochar, majorly including in-situ pyrolysis, co-pyrolysis, impregnation, encapsulation, and granulation. Considering the distinct features of different methods, the integrated methods are promising for fabricating effective biochar-based SRFs. The in-depth understanding of the mechanism of nutrient loading and slow release is discussed based on current knowledge. Additionally, the perspectives and challenges of the potential application of biochar-based SRFs are described. Knowledge surveyed from this review indicates that applying biochar-based SRFs is a viable way of promoting sustainable agriculture.

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Crossref · 10.1016/j.ese.2022.100167

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  • Eutrophication of aquatic environments caused by excessive loadings of phosphorus and nitrogen results in environmental concerns such as generation of solid wastes and unpleasant emissions to air.

    “Eutrophication of aquatic environments caused by excessive loadings of phosphorus (P) and nitrogen (N) results in environmental concerns such as the generation of solid wastes and unpleasant emissions to the air [2,3].”

    From Microalgae-based wastewater treatment: Mechanisms, challenges, recent advances, and future prospects (2023) · cites this paper as [3]

    The Introduction (page unavailable) says phosphorus loss into surface water causes eutrophication and damages aquatic ecosystems. It also describes air pollution from nitrogen fertilizers, but not as a consequence of eutrophication. The paper does not support the claim that eutrophication generates solid wastes or unpleasant air emissions. (LLM, conf=0.88)

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Authors
Wang, C., Luo, D., Zhang, X., Huang, R., Cao, Y., Liu, G., Zhang, Y., & Wang, H.
Affiliations
  • Zhengzhou University (CN)
  • Central South University of Forestry and Technology (CN)
  • Central South University (CN)
Corresponding author
Wang, Chongqing
Venue
Environmental Science and Ecotechnology
Publisher
Elsevier BV
Published
2022-04
Volume
10
Pages
100167
ISSN
  • 2096-9643 (ISSN-L)
  • 2666-4984
OpenAlex
W4220778314
Cited by
432
References
150
Citations by year
2026: 107 · 2025: 131 · 2024: 105 · 2023: 59 · 2022: 30
FWCI
7.24
Type
journal article
Language
en
Open access
Locations
  • Environmental Science and Ecotechnology (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Natural Science Foundation of China (51804276, U1704252)
  • China Academy of Space Technology (2019QNRC001)
  • National Key Research and Development Program of China (2020YFC1908802)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Polymer-Based Agricultural Enhancements
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Physical Sciences › Environmental Science › Waste Management and Disposal › Phosphorus and nutrient management
Keywords
biochar, slow-release fertilizer, soil amendment, nutrient immobilization, co-pyrolysis, in-situ pyrolysis, encapsulation, granulation, impregnation, chemical fertilizer reduction, sustainable agriculture

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