用海藻作为无氧共基质与脂肪,油和油脂的价值化:生物甲潜力和微生物动态
Shah Faisal1, Adel W Almutairi2, Irfan Saif3
1Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106 PR China.
Bioresource technology
|February 8, 2025
概括
海藻与脂肪,油和油脂 (FOG) 的无氧共消化显著增加了甲的产量. 与海藻 (SW) 共同消化FOG可减少滞后阶段,并增强脂肪酸分解,以改善生物气回收.
科学领域:
- 环境科学 环境科学
- 生物技术是生物技术.
- 可再生能源可再生能源是可再生能源.
背景情况:
- 脂肪,油和油脂 (FOG) 是一个有问题的废物流.
- 海藻 (SW) 是一个丰富的,未充分利用的生物质资源.
- 无氧消化 (AD) 是废物利用和能源回收的关键技术.
研究的目的:
- 为了研究FOG与Gracilaria vermiculophylla (SW) 的无氧共消化 (AcD).
- 优化FOG:SW比率以提高甲生产和减少挥发性脂肪酸 (VFA).
- 分析FOG和SW的AcD期间微生物社区的转移.
主要方法:
- 使用FOG和SW在不同挥发性固体 (VS) 比率 (75%,50%,25%SW) 上进行了AcD实验.
- 量化了甲的产生,滞后阶段的持续时间和脂肪酸的减少.
- 使用16S rRNA基因测序分析了微生物社区的组成.
主要成果:
- 与50:50FOG:SW比率的联合消化产生了最高的甲产量 (235毫升/天),与单一消化相比,延迟阶段 (20天) 减少了.
- 在50:50的FOG:SW混合物中,棕酸和油酸的减少达到了95%.
- 微生物分析显示了Firmicutes,Chloroflexi和Bacteroidetes的丰富,甲基生物从Methanosaeta转移到Methanoculleus和RuMen-M2.
结论:
- 海藻是一种可行的辅基质,可以增强FOG的无氧共消化.
- 优化的FOG:SW比率提高了甲产量和效率.
- 与SW结合的FOG的AcD促进了有利于生物气生产的微生物社区动态.
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