A new study reports a promising approach to transform agricultural and industrial waste into high-performance porous carbon materials that could help improve soil and water conservation while addressing global waste management challenges.
The research, published in the journal Biochar, introduces a novel framework for producing and selecting morph genetic porous carbon, a type of activated biochar with enhanced structural properties. By combining advanced materials analysis with decision making methods from game theory, the researchers identified optimal porous carbon materials with strong potential for environmental applications.
Global waste production is increasing rapidly as industrialization and urbanization expand. At the same time, land degradation and soil erosion threaten food security and water resources in many parts of the world. Converting waste into valuable materials such as biochar has emerged as an attractive solution for both challenges.
In this study, scientists used eight different waste sources to produce biochar, including rice straw, vineyard pruning residues, palm pruning residues, sawdust, vinasse from sugarcane processing, poultry slaughterhouse waste, paper mill waste, and tissue paper manufacturing waste. The raw materials were first converted into biochar through pyrolysis under low oxygen conditions and then further activated at higher temperatures to create highly porous carbon materials.
The resulting material, known as morph genetic porous carbon, has a highly developed pore structure and large surface area. These characteristics allow the material to absorb water, nutrients, and pollutants more effectively than conventional biochar, making it particularly valuable for environmental management and soil improvement.
To determine which materials performed best, the research team produced 64 porous carbon samples and evaluated them using Brunauer Emmett Teller surface analysis, a widely used method for measuring the surface area and pore structure of porous materials. The results showed significant differences in performance depending on the original waste source and activation process.
The researchers then applied a decision making framework based on game theory known as the Condorcet algorithm. This method compares different options through pairwise evaluation and identifies the materials that outperform others across multiple criteria. The analysis considered twelve key physical parameters, including surface area, pore volume, and pore structure characteristics.
"Our goal was to move beyond traditional trial and error approaches and introduce a systematic way to identify the most effective porous carbon materials," the authors explained. "By combining materials science with decision analysis, we can prioritize the best candidates for soil and water conservation."
The study identified five top performing materials derived from agricultural wastes such as rice straw, sawdust, palm pruning residues, vineyard pruning residues, and tissue paper factory waste. These samples exhibited particularly high surface areas and favorable pore structures that enhance adsorption capacity and water retention.
According to the researchers, materials with higher surface area and pore volume provide more space for water and nutrient storage in soils. This can help improve soil structure, increase moisture retention, and reduce erosion, especially in regions facing water scarcity or degraded farmland.
The findings also highlight the environmental benefits of recycling agricultural and industrial residues. Instead of being discarded or burned, these materials can be converted into advanced porous carbon products that contribute to sustainable agriculture and environmental protection.
The researchers suggest that the proposed framework could guide future development of biochar based materials for environmental management. By integrating advanced material characterization with decision making tools, scientists and engineers may be able to design more efficient materials for applications ranging from soil restoration to pollution control.
The study demonstrates that innovative waste valorization strategies can simultaneously address waste management challenges and support sustainable resource conservation.
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Journal Reference: Sadeghi, S.H., Zare, S., Gharehmahmudli, S. et al. Introducing priority morph-genetic porous carbon for potential applications in soil and water conservation through game theory. Biochar 8, 35 (2026).
https://doi.org/10.1007/s42773-025-00505-8
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About Biochar
Biochar (e-ISSN: 2524-7867) is the first journal dedicated exclusively to biochar research, spanning agronomy, environmental science, and materials science. It publishes original studies on biochar production, processing, and applications—such as bioenergy, environmental remediation, soil enhancement, climate mitigation, water treatment, and sustainability analysis. The journal serves as an innovative and professional platform for global researchers to share advances in this rapidly expanding field.
