结合无氧消化泥和不同的生物炭,开发一种基于生物炭的缓释NPK肥料
Esteban Villada1, Manuela Velasquez1, Ana M Gómez1
1Faculty of Architecture and Engineering, Environmental Engineering Program, Institución Universitaria Colegio Mayor de Antioquia, Carrera 78 # 65 - 46, 050034 Medellín, Colombia.
The Science of the total environment
|April 4, 2024
概括
这项研究开发了一种由生物气泥和农业残留物制成的基于生物炭的新型肥料. 该肥料增强了植物营养,显示了可持续的NPK恢复和农业中受控的营养释放的潜力.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 生物气泥是无氧消化过程的副产品,含有有价值的营养素.
- 农业残留物是丰富的,适合生物炭生产的基纤维素材料.
- 可持续的肥料生产对于现代农业至关重要.
研究的目的:
- 开发一种基于生物炭的肥料,使用生物气泥和各种生物炭.
- 描述开发的肥料的营养含量和表面特性.
- 评估生物炭基肥料的营养释放率和植物生物可用性.
主要方法:
- 生物炭生产来自菜,玉米,大米和甘残留物.
- 用来自城市固体废物的沼气泥浸生物炭.
- 肥料特性 (N,P,K,SEM/EDS,FTIR,缓释试验) 的表征.
- 用黄瓜植物进行生物测试,以评估营养吸收.
主要成果:
- 生物炭特性 (O/C,H/C,CEC,表面积) 与营养吸附相关.
- 观察到受控的营养物质释放,玉米衍生生物炭肥料在24小时内释放的N,P,K<15%.
- 黄瓜植物N (61%),P (32%) 和K (19%) 度显著增加.
结论:
- 基于生物炭的肥料提供受控的营养释放和增强的植物营养.
- 这种方法提供了一种可持续的方法,用于从沼气泥和农业残留物中回收NPK.
- 开发的生物炭肥料是农业营养管理的有希望的替代品.
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