Preparation and Application of Biochar in Agricultural Systems

A special issue of Agriculture (ISSN 2077-0472). This special issue belongs to the section "Agricultural Technology".

Deadline for manuscript submissions: closed (25 November 2024) | Viewed by 1855

Special Issue Editors


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Guest Editor
College of Engineering, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan 430070, China
Interests: agriculture waste; biochar; pyrolysis; gasification; combustion; carbon-based controlled-release fertilizer; energy-conversion equipment; energy-saving technology

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Guest Editor
Chinese Academy of Agricultural Sciences, Beijing 100081, China
Interests: agriculture waste; emission reduction; life cycle assessment; biochar; pyrolysis
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Guest Editor
School of Environment and Health, Jianghan University, Wuhan 430056, China
Interests: agriculture waste; herbal medicine waste; biochar; bio-crude; pyrolysis; gasification; combustion

Special Issue Information

Dear Colleagues,

The conversion of agricultural waste into biochar is a promising technology; however, it still faces many technical obstacles in terms of preparation and quality. The purpose of this Special Issue is to provide crucial information to enhance discussions, analyses, and evaluations pertaining to the preparation and application of biochar in agricultural systems.

This issue will cover various research topics related to the preparation of biochar, including carbonization processes, mechanisms, and equipment, improving quality via activation, and reducing pollution via catalysis. At the same time, this Special Issue encourages the submission of research on various topics related to high-value agricultural applications of biochar. A series of evaluations are also needed for this technology in terms of its cost, integration, and sustainability. Authors are encouraged to submit their contributions on different hot topics in this field, including, but not limited to, the following:

  • Carbonization processes, mechanisms, and equipment;
  • Activation methods, catalytic technology, and energy-saving technology for biochar preparation;
  • Carbon-based controlled-release fertilizers, biopesticides, soil improvements, contaminant treatments, and nutrient recovery;
  • Cost, integration, and sustainability of biochar technology;
  • Carbon capture, storage, and utilization and other research related to biochar utilization.

Dr. Baojun Yi
Prof. Dr. Lili Huo
Dr. Fang Huang
Guest Editors

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Keywords

  • biochar
  • carbonization process
  • pyrolysis mechanism
  • carbon-based controlled release
  • high-value application

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Published Papers (1 paper)

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Research

13 pages, 2505 KiB  
Article
Structure–Activity Mechanism of Sodium Ion Adsorption and Release Behaviors in Biochar
by Kai Yang, Wei Jing, Jing Wang, Kaizhao Zhang, Yaoming Li, Meng Xia, Kun Zhang and Jiefei Mao
Agriculture 2024, 14(8), 1246; https://doi.org/10.3390/agriculture14081246 - 28 Jul 2024
Cited by 1 | Viewed by 1098
Abstract
Biochar is a soil amendment that has the potential to effectively improve soil salinization. However, there is a paucity of studies on sodium adsorption using biochar, and the adsorption mechanism remains unclear. To better understand the adsorption mechanism of Na+ on the [...] Read more.
Biochar is a soil amendment that has the potential to effectively improve soil salinization. However, there is a paucity of studies on sodium adsorption using biochar, and the adsorption mechanism remains unclear. To better understand the adsorption mechanism of Na+ on the surface of biochar, both pyrochar and hydrochar were produced at different temperatures. The capacity and influencing factors of Na+ adsorption in biochar were analyzed via batch adsorption experiments. Pore filling dominated the Na+ adsorption in the concentration of the NaCl solution when it was ≤100 mg/L, where wheat straw pyrochar (WB, 3.95–4.94 mg/g Na) and poplar wood chip pyrochar (PB, 0.62–0.70 mg/g Na) presented the release and adsorption of Na+, respectively. When the concentration of the NaCl solution was >100 mg/L, the adsorption capacity of WB (25.44–36.45 mg/g) was significantly higher than PB (4.46–6.23 mg/g). Both the adsorption and release of Na+ in hydrochar was insufficient. In a high concentration of NaCl solution, ion exchange became the key mechanism determining the adsorption of Na+ in pyrochar, in which K+ contributed to more than 94% of the Na+ adsorption. The findings proposed strategies for the structural design of biochar used for Na adsorption. These will promote the utilization of solid biowaste for sodium adsorption and the potential of soil salinization amendment for agriculture in arid lands. Full article
(This article belongs to the Special Issue Preparation and Application of Biochar in Agricultural Systems)
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