强化微藻生产和微生物群落在悬浮载体和市政废水上的发展
Sergio Serrano-Blanco1, Rixia Zan2, Adam P Harvey1
1Newcastle University, School of Engineering, Merz Court, Newcastle Upon Tyne, UK.
Journal of environmental management
|October 9, 2024
概括
在悬浮固体光生物反应器 (ssPBR) 中将微藻与载体系统集成,可以提高微藻生产率和废水处理. 这种新的方法有效地去除营养物质,并重塑废水中的细菌群落.
科学领域:
- 环境科学 环境科学
- 生物技术是生物技术.
- 微生物学 微生物学
背景情况:
- 污水处理带来了诸多挑战,包括微藻种植的高成本和低生产率.
- 悬浮固体光生物反应器 (ssPBR) 具有降低运营成本和增强微藻生长的潜力.
- 微藻可以利用废水中的营养物质,同时改善水质,减少下游处理需求.
研究的目的:
- 开发和评估一种新的方法,将微藻废水处理与SSPBR中的载体系统相结合.
- 评估载体对附着和悬浮微藻细胞 (T. obliquus) 的生长的影响.
- 分析微藻和载体处理后废水细菌群落的变化.
主要方法:
- 使用市政废水,在具有不同载体填充比率的ssPBR中培养T. obliquus.
- 营养物质去除效率的评估 (NH3-N,PO43-,DTC).
- 微藻细胞生产率的测量.
- MinION纳米孔测序用于处理和未处理废水的细菌群体分析,以及附着与悬浮群体.
主要成果:
- T. obliquus实现了高的营养去除率:99.3-99.9%的NH3-N,54.5-88.5%的PO43-和92.8-94.5%的DTC.
- 与对照组相比,12.5%的载体填充比率显著提高了微藻细胞的生产力 (1.2 × 10^6细胞/毫升/天),而对照组 (4.3 × 10^5细胞/毫升/天).
- 细菌群落从下水道相关的属 (Aliarcobacter,Arcobacter) 转移到光合作用和生物修复相关的属 (Limnococcus,Stanieria,Pseudomonas,Rheinheimera),具有不同的附着和悬浮种群.
结论:
- 将载体系统集成到ssPBR中可以提高废水处理的微藻生产率.
- 12.5%的载体填充比率优化了微藻生长和营养物质的去除.
- 微藻和载体处理显著改变了废水细菌群落,为附着和悬浮细胞创造了独特的微生物.
相关概念视频
Green Algae
Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
Bioremediation
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
Environmental Applications of Microorganisms
3
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...
3


