模拟国家嵌入流的玉米乙醇蒸厂的谷物,以阐明营养减少的机会
Kenneth Ruffatto1, Gerald C Shurson2, Rebecca Logsdon Muenich3
1Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.
Environmental science & technology
|September 11, 2023
概括
玉米乙醇蒸机 玉米乙醇蒸机
科学领域:
- 环境科学 环境科学
- 农业科学 农业科学
- 营养素管理 营养素管理
背景情况:
- 过量的 (P) 负载会损害淡水质量和生态系统.
- 联邦授权的P减少目标针对特定的有机废物流.
- 牲畜和家禽料,以及玉米乙醇蒸机的谷物 (DGs),是P损失的关键来源.
研究的目的:
- 模拟美国总局的流动,以确定减少P的机会.
- 评估来自总局的P的营养贸易潜力.
- 了解总局在动物料中的地理空间分布和P贡献.
主要方法:
- 一个县级的流量网络模拟被用于美国的玉米乙醇 DGs.
- 分析的重点是P转移到动物养业务.
- 使用县级数据,探索爱荷华州营养贸易潜力.
主要成果:
- 据估计,转移到美国动物业务的DG中的P几乎是所有人类废物的两倍.
- 中西部州占国内DG使用量的63%,其中72%在他们的生产状态内使用.
- 突出了营养交易的潜力,以激励生物炼油厂的GD从P回收.
结论:
- 玉米乙醇生物炼油厂是P.管理的一个重要点.
- 来自总局的集中P降低提供了一种减轻动物肥中P损失的策略.
- 营养贸易市场可以促进P的恢复和可持续的P管理.
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