用于废水处理的微藻-细菌生物膜:操作,性能,机制和不确定性
Jing-Tian Zhang1, Jian-Xia Wang1, Yang Liu1
1School of Bioengineering, Dalian University of Technology, Dalian 116024, PR China.
The Science of the total environment
|October 26, 2023
概括
微藻-细菌生物膜在废水处理方面表现有前途,但性能因类型而异. 本审查对生物膜 (2D,3D和颗粒性污泥) 进行了分类,以澄清其真正的潜力和对大规模应用的挑战.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 生物技术是生物技术.
背景情况:
- 微藻-细菌生物膜在废水处理中提供了协同效应的优势,包括污染物去除,二氧化碳捕获和生物质分离.
- 然而,一般术语"微藻-细菌生物膜"可能会误导,因为性能因生物膜类型和基质而异.
- 了解这些变化对于有效的大规模废水处理应用至关重要.
研究的目的:
- 将微藻-细菌生物膜分为不同的类别:二维基底,三维基底和微藻-细菌颗粒污泥 (MBGS).
- 评估每个生物膜类型的污染物去除特性和操作条件.
- 揭示这些生物膜在大规模废水处理中应用的真正潜力和挑战.
主要方法:
- 基于基质类型的微藻-细菌生物膜的分类:2D,3D和没有基质 (MBGS).
- 对每种类型的营养物质去除,污染物回收和二氧化碳封存报告的效率的审查和比较.
- 微生物社区结构和细胞外聚合物质 (EPS) 作用的分析.
主要成果:
- 2D生物膜显示高微藻含量和营养物质的去除,但需要长时间的保留时间.
- MBGS表现出高效的污染物去除与可接受的保留时间,但需要进一步调查阳光的可行性.
- 由于基底结构的多样化,3D生物膜具有多样化的性能;MBGS被富含微生物用于EPS生产和脱.
结论:
- 分类微藻-细菌生物膜对于准确评估它们的废水处理潜力至关重要.
- MBGS显示出对高效,成本效益的废水处理的承诺,但光线透和温室气体排放等挑战需要解决.
- 对于碳中和目标,建议对EPS作用和优化污染物消除协同作用条件的进一步研究.
相关概念视频
01:29Biofilms
29
Biofilms are complex communities of microorganisms encased in a self-produced extracellular polysaccharide matrix attached to surfaces. These microbial consortia can include single or multiple species, providing enhanced survival benefits by forming organized, multilayered structures.The formation of biofilms occurs through four key stages: attachment, colonization, development, and dispersal.During attachment, free-swimming planktonic cells adhere to a surface, often facilitated by...
29
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