从合成猪废水中回收的基于的产品:土壤的命运和行为
Kasuni H H Gamage1,2, Ganga M Hettiarachchi1, Evan Heronemus3
1Department of Agronomy, Throckmorton Plant Sciences Center, Kansas State University, 1712 Claflin Road, Manhattan, Kansas 66506, United States.
Environmental science & technology
|February 2, 2026
概括
从猪废水中提取的基于的新型回收营养产品 (RNP) 显示出作为安全肥的潜力. 这种二次P来源在各种土壤类型中证明了植物可用的,提供了可持续的替代方案.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 土壤科学 土壤科学
背景情况:
- 随着对肥的需求不断增长和水质的担忧,需要替代P的来源.
- 厌氧膜生物反应器 (AnMBR) 技术提供了一种从废水中回收营养的方法.
研究的目的:
- 为了评估基于Ca的回收营养产品 (RNP) 作为二级肥的有效性.
- 在不同土壤中,将RNP与常规肥料 (MAP,TSP) 的P溶解,转化和生物利用率进行比较.
主要方法:
- 实验室化研究使用Petri盘与石灰质,中性和酸性土壤.
- 分析土壤pH值,总P值,树脂可提取的P值和使用X射线吸收近边缘结构光谱学的P分化.
主要成果:
- 超过70%的从RNP添加的P仍然在各种土壤类型的应用区内.
- 来自RNP的植物可用的P大于所有土壤中的对照,并且与酸性土壤中的MAP相比.
- 在RNP处理的土壤中,类似酸的物种占主导地位,表明溶解度较低.
结论:
- 基于Ca的RNP显示出作为农业应用的可行的源的前景.
- 工艺修改可以提高RNP作为二次肥料的效率和可行性.
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