有机废物发酵的电化学促进:研究进展和前景
Nuohan Wang1, Ming Gao1, Shuo Liu1
1School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
Environmental research
|October 22, 2023
概括
电发酵 (EF) 提高了有机废物的转化为有价值的产品,如燃料和酸. 这种生物电化学方法为资源回收和新化学品生产提供了一种可持续的方法.
科学领域:
- 生物电化学 生物电化学
- 微生物生物技术 微生物生物技术
- 可持续的化学可持续的化学
背景情况:
- 目前的有机废物处理方法提供有限的资源利用和低产品价值.
- 从废物中开发增值产品对于可持续增长至关重要.
- 电发酵 (EF) 是一种新兴的技术,它使用电刺激来增强微生物代谢和产品生成.
研究的目的:
- 审查电子发酵的进展,以生产各种增值产品.
- 突出通过EF可以实现的新产品,包括1,3-propanediol,3-hydroxypropionic acid, succinic acid,acrylic acid和lysine.
- 确定EF技术当前的研究趋势和挑战.
主要方法:
- 审查现有的关于电气发酵应用的文献.
- 分析EF对微生物活性和产品产量的影响.
- 检查EF的材料选择和系统集成方面的挑战.
主要成果:
- EF有效地刺激细胞增殖和微生物新陈代谢,促进气体燃料,有机酸和其他有价值化合物的生产.
- 新型增值产品如1,3-propanediol,3-hydroxypropionic acid, succinic acid,acrylic acid和lysine可以通过EF生产.
- 关键的研究趋势包括产品的联合生成,微生物社区分析,电子转移研究,营养恢复和使用人工智能和生物传感器的优化.
结论:
- 电气发酵是一种有前途的生物电化学方法,用于可持续的有机废物利用.
- 需要进一步的研究来解决导电材料,电极优化和生物电化学系统 (BES) 合方面的挑战.
- 优化EF具有开发更高效,更先进的废物价值化技术的潜力.
相关概念视频
01:30Environmental Applications of Microorganisms
29
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...
29
00:46Bioremediation
18.7K
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.
18.7K
01:23Microbial Fermentation
35
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...
35
01:20Fates of Pyruvate
8.5K
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...
8.5K
01:15Metabolism of Chemolithotrophs
21
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.
21