谢瓦内拉oneidensis和Methanosarcina barkerii增强和导电材料对长期无氧消化性能的影响
Camilla Perego1, Roger König1, Maurizio Cuomo1
1Environmental Biotechnologies, Institute of Microbiology (IM) DACD Campus Mendrisio, University of Applied Sciences and Arts of Southern Switzerland SUPSI, Via Flora Ruchat-Roncati, 6850, Mendrisio, Switzerland.
Biotechnology for biofuels and bioproducts
|January 22, 2025
概括
添加导电材料,如网状玻璃碳 (RVC) 显著提高无氧消化和生物气生产. 这种方法提高了甲输出和工艺效率,显示了大规模应用的前景.
科学领域:
- 生物技术是生物技术.
- 环境科学 环境科学
- 微生物生态学 微生物生态学
背景情况:
- 无氧消化是生产沼气的关键过程.
- 扩大无氧消化面临效率和甲产量方面的挑战.
- 直接跨物种电子转移 (DIET) 为增强微生物相互作用提供了一种新的方法.
研究的目的:
- 研究导电材料在增强无氧消化过程中的有效性.
- 评估直接物种间电子转移 (DIET) 在生物气生产中的作用.
- 为了评估一个带导材料用于甲增强的同位体联盟的性能.
主要方法:
- 使用了Shewanella oneidensis和Methanosarcina barkerii的合成共同种植.
- 在3.8L无氧消化实验中使用网状玻璃碳 (RVC) 作为导电材料.
- 使用乙酸盐和真实料,与RVC和没有RVC的甲生产率进行比较.
主要成果:
- 添加RVC使酸盐的最大甲生产速度增加了86%.
- 使用真实料进行的长期测试显示,使用RVC的甲生产率增加了13%.
- 甲类菌 (Methanosarcina barkerii) 占据了微生物群落的主导地位,性甲生成增加了.
结论:
- 导电材料 (RVC) 有效地提高无氧消化率和甲生产.
- 该RVC材料是可重复使用的,并显示出真正规模生物气生产应用的潜力.
- 需要进一步的研究来阐明RVC对硫化合物生产的影响.
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