一种具有高容量元素负载和长时缓释的竹质多孔生物炭及其制备方法
By preparing bamboo-based porous biochar, the problems of uncontrollable pore size distribution and single function of slow-release fertilizers have been solved, achieving high-efficiency loading and long-term slow release, thus improving fertilizer utilization and environmental safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- FUJIAN XINSEN CARBON
- Filing Date
- 2025-12-16
- Publication Date
- 2026-07-17
AI Technical Summary
Existing slow-release fertilizers suffer from problems such as uncontrollable pore size distribution, limited functionality, low material purity, and high cost, making it difficult to achieve efficient loading and long-term slow release of nutrient molecules.
A method for preparing bamboo-based porous biochar was adopted, which involves modification with an aminosilane coupling agent, ball milling with lignin sulfonate, impregnation with a specific activator, and pyrolysis treatment to form a pore structure dominated by mesopores. Combined with the cross-linking network of hydantoin epoxy resin, porous biochar with pore size matching the hydration diameter of nutrient molecules was prepared.
It achieves high-capacity element loading and long-term slow release, significantly improving fertilizer utilization, reducing nutrient loss and environmental pollution. The pore size distribution is concentrated in 1-3nm, the loading rate exceeds 55%, and the slow release period exceeds 30 days.
Smart Images
Figure CN121536932B_ABST