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评估从玉米中级生物炼油工艺:通过无氧发酵产生毛和挥发性脂肪酸
Alba Ester Illera1, María Teresa Sanz1, Miguel Mauricio-Iglesias2
1Department of Biotechnology and Food Science, Faculty of Science, University of Burgos, Plaza Misael Bañuelos s/n, 09001, Burgos, Spain.
Journal of environmental management
|April 28, 2025
概括
一个新的级联生物炼油厂有效地将玉米转化为毛皮和挥发性脂肪酸 (VFA). 亚临界水预处理提取出furfural,然后对剩余固体进行无氧发酵以产生VFA,这表明了可持续的方法.
科学领域:
- 生物质转化和生物精炼
- 可持续化学 可持续化学
- 可再生能源可再生能源是可再生能源.
背景情况:
- 细胞生物质,如玉米,是一种丰富而未充分利用的资源.
- 有效地将生物质转化为增值产品对于可持续的生物经济至关重要.
- 现有的生物炼油方法在产品选择性和工艺集成方面经常面临挑战.
研究的目的:
- 提出和评估一种新的级联生物炼油厂概念,用于从玉米中连续生产和挥发性脂肪酸 (VFA).
- 优化亚临界水的预处理,以提取furfural和随后的无氧发酵,以生产VFA.
- 评估不同注射剂对VFA产量的影响.
主要方法:
- 用二氧化碳作为压缩剂在180°C和50bar处进行玉米炉子的亚临界水预处理,用于furfural提取.
- 预处理的固体残留物的无氧发酵,使用牛和废水处理厂的无氧消化 (AD) 污泥作为注射剂.
- 液体和固体相的化学分析,以确定产品产量和生物质成分.
主要成果:
- 在下临界水处理1小时后,在液相中达到29%的furfural产量.
- 预处理显著降低了半纤维素含量,同时增加了固体阶段的纤维素和红素.
- 与AD污泥相比,奶牛的注射剂导致VFA产量高出12%.
- 和酸被确定为furfural提取过程中的副产品.
结论:
- 拟议的级联生物炼油厂有效地从玉米中连续生产furfural和VFA.
- 亚临界水预处理是一种可行的方法,用于提取furfural,并为随后的发酵准备生物质.
- 与AD污泥相比,在这个特定的过程中,牛是VFA生产的更有效的注射剂.
- 该过程证明了将低价值生物质转化为高价值化学品和燃料的潜力.
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