酸盐的最佳度,用于增长和正常运作的海洋Anammox细菌,Candidatus Scalindua sp
Thelwadanage Nadisha Tharangani Kumari Nawarathna1, Haruhi Iida1, Naoki Fujii1
1Department of Civil and Environmental Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University.
Microbes and environments
|November 12, 2025
概括
在水产养殖中对去除至关重要的海洋菌在特定的酸盐范围内繁荣发展. 对于Candidatus Scalindua的最佳功能,需要酸盐度在0.23至6.15毫克P L-1.1之间.
科学领域:
- 环境微生物学环境微生物学
- 废水处理技术 废水处理技术
- 水产养殖系统管理系统的管理.
背景情况:
- 海洋阿纳莫克斯细菌是重循环水产养殖系统中去除的关键.
- 这些细菌通常居住在低酸盐环境中,但最佳水平尚不清楚.
- 之前的研究使用了高酸盐度,不反映自然条件.
研究的目的:
- 为了确定海洋藻细菌的最佳酸盐度,Candidatus Scalindua sp.
- 研究不同酸盐水平对anammox活性的长期影响.
- 建立理想的酸盐范围,以便在废水处理中有效地去除.
主要方法:
- 种植Candidatus Scalindua sp. 的种植方式 在七种不同的酸盐度下 (015.48 mg P L-1).
- 在70天内监测anammox活动和去除效率.
- 根据生物质样本计算平均增长率.
主要成果:
- 去除效率在0.236.15毫克P L-1酸盐范围内稳定在70%.
- 酸盐度为0毫克P L-1和15.48毫克P L-1导致性能不佳.
- 在测试条件下,平均增长率在0.0006至0.0012h-1之间.
结论:
- 对于Candidatus Scalindua的最佳酸盐度在0.23至6.15毫克P L-1.1之间.
- 保持这种酸盐范围对于在废水处理中有效去除是必不可少的.
- 这一发现支持在可持续水产养殖中使用anammox工艺.
相关概念视频
Factors Influencing Microbial Growth: pH
1.0K
Microorganisms are classified as acidophiles, neutrophiles, or alkaliphiles based on their pH growth preferences, reflecting their adaptations to specific environments. Maintaining a stable intracellular pH is critical for macromolecular stability and enzymatic activity, which can be challenged by external pH variations.Neutrophiles, such as Escherichia coli, grow optimally between pH 5.5 and 8.0. These microorganisms inhabit neutral or slightly acidic environments and employ mechanisms like...
1.0K
Metabolism of Chemolithotrophs
741
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.
741
Primary Production
25.0K
The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.
25.0K


