膜生物反应器辅助从农业产业残留物中产生挥发性脂肪酸,用于反动物料应用
Milad Parchami1, Clarisse Uwineza1, Onyinyechi H Ibeabuchi1
1Swedish Centre for Resource Recovery, University of Borås, 501 90 Borås, Sweden.
Waste management (New York, N.Y.)
|August 7, 2023
概括
这项研究表明,利用酸性发酵从农业工业废物中有效生产挥发性脂肪酸 (VFA). 这些VFA可以作为反动物的可持续料补充剂,增强它们的饮食.
科学领域:
- 生物技术和农业科学 生物技术和农业科学
- 可持续的料生产 可持续的料生产
- 废弃物价值化 废弃物价值化 废弃物价值化
背景情况:
- 挥发性脂肪酸 (VFA) 是反动物饮食中至关重要的能量来源和前体.
- 农业产业残留物为VFA生产提供了可持续的基板.
- 提升废物流的价值与畜牧业的循环经济原则保持一致.
研究的目的:
- 为了研究果果汁,薄和马蛋白液的生物转化为VFA.
- 通过批量和半连续发酵系统优化VFA生产.
- 评估使用VFA作为反动物料补充剂的可行性.
主要方法:
- 在不同pH值 (6-10) 的批量测试中酸性发酵.
- 使用浸泡膜生物反应器 (iMBR) 进行半连续发酵.
- 在iMBR系统中优化有机载荷率 (OLR).
主要成果:
- 在pH 10的薄型和马蛋白液的同时消化,在批量测试中产生了最高的VFA度 (14.2 g/L).
- 在IMBR中,VFA度达到28.6g/L,OLR为3.7gVS/L/day.
- 长期运行 (114天) 证明了iMBR在VFA恢复方面的潜力,尽管存在膜污染挑战.
结论:
- 酸性发酵是一种从农业工业废物中生产VFA的可行方法.
- 使用VFA的碳酸盐平台显示出可持续的反动物料添加剂生产的前景.
- 农业副产品的生物提炼为动物营养提供了一种环保的方法.
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