在使用未定义混合培养的生物工艺中生产新能源气体
Elias Hakalehto1,2,3, Ari Jääskeläinen4
1University of Helsinki, Helsinki, Finland.
Advances in biochemical engineering/biotechnology
|December 13, 2024
概括
生物反应器中的微生物混合培养为可持续能源和工业生产有价值的气体. 优化气体流量和管理切削力是利用这些微生物资源为循环经济的关键.
科学领域:
- 生物技术和环境科学 生物技术和环境科学
- 微生物生态学和生物工艺工程
背景情况:
- 生物反应器涉到多个阶段 (液体,固体,气体),造成扩散限制,影响反应效率.
- 微生物的新陈代谢本质上产生有氧和无氧气体的气体排放,包括二氧化碳和挥发性化合物.
- 这些气态产品代表了能源和生化生产的宝贵资源.
研究的目的:
- 探索微生物混合培养及其气态产品对可持续工业和能源的潜力.
- 通过气体流量管理来研究克服生物反应器扩散限制的方法.
- 突出气相在最大化微生物过程的益处中的作用.
主要方法:
- 利用生物反应器中的气体流来克服扩散限制并促进挥发性产品的去除.
- 精心调节混合元件和气体流量,以防止剪切力扰乱微生物活动.
- 专注于通过释放的气体及其混合物优化能源生产.
主要成果:
- 微生物混合培养可以产生有价值的气体产品,如生物甲,生物和生物乙.
- 这些气体可以被净化或作为各种应用的混合物使用,包括发动机燃料和作为其他碳化合物的原料.
- 生物元件与反应堆技术的整合可以导致"没有浪费"的情况和新的可持续资源流.
结论:
- 气相对于实现微生物混合培养在可持续的工业和城市应用中的全部潜力至关重要.
- 优化的生物工艺,考虑到气体流和微生物社区相互作用,为绿色能源和循环经济提供了重大机会.
- 这种方法促进了人类活动与生物圈之间的共生关系,促进了可持续发展和资源管理.
相关概念视频
01:30Environmental Applications of Microorganisms
1
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
1
00:46Bioremediation
18.2K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.2K
01:15Metabolism of Chemolithotrophs
2
Chemolithotrophs are microorganisms that obtain energy by oxidizing inorganic molecules such as hydrogen gas (H₂), ammonia (NH₃), reduced sulfur compounds (H₂S, S²⁻), and ferrous iron (Fe²⁺). Unlike heterotrophic organisms that rely on organic carbon, chemolithotrophs transfer electrons from these inorganic donors to the electron transport chain (ETC), generating a proton motive force (PMF) that drives ATP synthesis through oxidative phosphorylation.
2
01:23Microbial Fermentation
Fermentation is a crucial anaerobic metabolic process that enables microbes to derive energy from sugar without relying on oxygen or an electron transport chain. This process is fundamental to various biological and industrial applications and is classified based on the metabolic products generated.Role of Pyruvate in FermentationPyruvate and its derivatives serve as key electron acceptors in fermentative pathways. The oxidation of NADH to regenerate NAD+ is essential for the continuation of...
01:20Fates of Pyruvate
8.3K
Pyruvate is the end product of glycolysis, where glucose is oxidized to pyruvate, simultaneously reducing NAD+ to NADH. Two molecules of ATP are also produced by substrate-level phosphorylation.
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
8.3K