Cited by 190Polymer-Based Agricultural EnhancementsPhosphorus and nutrient managementSoil Carbon and Nitrogen Dynamics

Microwave-assisted synthesis of a novel biochar-based slow-release nitrogen fertilizer with enhanced water-retention capacity

Wen, Peng, Wu, Zhansheng, Han, Yajie, Cravotto, Giancarlo, Wang, Jun, Ye, Bang-Ce·2017·ACS Sustainable Chemistry & Engineering

Abstract

Biochar-based slow-release nitrogen fertilizers (BSRFs) have been arousing a great deal of interest from researchers and academics, but many of these fertilizers do not possess water-retention capacity. In this work, a polymer matrix has been introduced into NH 4 + -loaded biochar (N-BC), using microwave (MW) irradiation, for the purpose of acting as a superabsorbent polymer to improve soil water-retention capacity. The polymer matrix is composed of cotton stalks (CSs), acrylic acid (AA), 2-acrylamide-2-methylpropanesulfonic acid (AMPS), and bentonite (bent.). N-BC was prepared via the adsorption of NH 4 + onto BC, and its adsorption behavior was investigated. The structure and properties of the resulting samples were characterized using various characterization methods. Results suggest that BSRFs could significantly improve the water-holding and water-retention capacity of soil. BSRFs effectively reduced the nitrogen-release rate (69.8% of nitrogen was released after 30 days), and possessed low nitrogen-leaching-loss amounts (10.3%), low nitrogen migrate-to-surface-loss amounts (7.4%), and high nitrogen-use efficiency (64.27%), as compared to NH 4 Cl and N-BC, consequently effectively promoting cotton plant growth. The soil burial degradation test of BSRFs indicated that BSRFs possessed good degradability. BSRFs may therefore have promising applications in modern, sustainable agriculture, while MW irradiation is an important strategy with which to produce BSRFs.

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Crossref · 10.1021/acssuschemeng.7b01721

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Authors
Wen, P., Wu, Z., Han, Y., Cravotto, G., Wang, J., & Ye, B.-C.
Affiliations
  • Shihezi University (CN)
  • University of Turin (IT)
  • Xinjiang Academy of Agricultural and Reclamation Science (CN)
Corresponding author
Wu, Zhansheng
Venue
ACS Sustainable Chemistry & Engineering
Published
2017-07-13
Volume
5
Issue
8
Pages
7374-7382
ISSN
2168-0485 (ISSN-L)
OpenAlex
W2725225074
Cited by
190
References
50
Citations by year
2026: 17 · 2025: 16 · 2024: 27 · 2023: 27 · 2022: 29 · 2021: 38 · 2020: 17 · 2019: 8 · 2018: 9 · 2017: 1
FWCI
4.32
Type
journal article
Language
en
Open access
closed
Locations
  • ACS Sustainable Chemistry & Engineering (publishedVersion)
  • Institutional Research Information System University of Turin (University of Turin) (submittedVersion)
Funders
  • National Natural Science Foundation of China (21466034)
  • Scientific Research Foundation for Changjiang Scholars, Shihezi University (CJXZ201501)
  • Young and Middle-aged Science and Technology Innovation Leading Talent of Bingtuan (2016BC001)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Polymer-Based Agricultural Enhancements
  • Physical Sciences › Environmental Science › Waste Management and Disposal › Phosphorus and nutrient management
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
Keywords
biochar, slow-release nitrogen fertilizer, microwave-assisted synthesis, superabsorbent polymers, soil water retention, ammonium adsorption, cotton stalk, acrylic acid, AMPS, bentonite, nitrogen leaching, nitrogen use efficiency, cotton growth, biodegradability

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