释放玉米带流域的循环潜力,通过生物炼油厂的回收激励措施
Kenneth Ruffatto1, Arghajeet Saha2, Rebecca L Muenich2
1Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
Journal of environmental management
|January 11, 2025
概括
生物炼油厂可以从乙醇副产品中回收 (P),制造可再生P肥料并减少来自动物废物的P污染. 这一战略为淡水资源提供了显著的环境效益.
科学领域:
- 环境科学 环境科学
- 农业科学 农业科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 全球 (P) 储量正在减少,而P燃料的藻类繁殖威胁到淡水生态系统.
- 美国中西部的玉米生物炼油厂生产含有P的副产品,有助于营养污染.
- 集中动物养操作 (CAFO) 是P排泄的重要来源.
研究的目的:
- 评估从玉米生物炼油厂的副产品中回收P的潜在好处.
- 量化可以生产的可再生P (rP) 肥料的数量.
- 评估从CAFO废物流中减少P转移的情况.
主要方法:
- 在六个中西部州的生物炼油副产品中分析P回收潜力.
- 基于生物炼油厂位置的CAFO废物P转移模型.
- 确定P减少和循环战略的优先流域.
主要成果:
- 每年有可能生产107,500公 (MT) 的rP肥料.
- 每年可能从CAFO废物中转移26,800万P.
- 来自生物炼油厂的P回收几乎是该地区市政废水P减少潜力的两倍.
结论:
- 激励玉米生物炼厂的P回收是减少营养素的可行策略.
- 这种方法可以减轻P污染,支持循环经济原则,并加强淡水资源保护.
- 结果可以为政策制定者和营养减少分析师提供关于P负载减少策略的信息.
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