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相关概念视频

Inorganic Nitrogen Assimilation01:22

Inorganic Nitrogen Assimilation

33
Nitrogen is an essential element in biological systems, forming a crucial component of proteins, nucleic acids, and other cellular constituents. Many bacteria and archaea acquire nitrogen in the form of nitrate (NO₃⁻) or ammonia (NH₃), which are then assimilated into biomolecules through specific enzymatic pathways.Assimilatory Nitrate ReductionWhen nitrate enters the cell, it undergoes a two-step reduction process known as assimilatory nitrate reduction. Initially, the enzyme...
33

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相关实验视频

Updated: Jul 16, 2025

A Novel Bioreactor for High Density Cultivation of Diverse Microbial Communities
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用生物波器去除氨的优化试点规模研究.

Junlong Meng1, Songtao Shen2, Chuanhui Zhou1

  • 1Southwest University of Science and Technology, Mianyang, 621010, China.

Scientific reports
|September 20, 2023
PubMed
概括

优化生物过器条件以去除氨 (AN) 是至关重要的. 该研究发现了最佳参数,包括C/N比率为18.95,pH值为7.78,液压负荷为1.04d-1,实现了超过91%的AN去除.

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科学领域:

  • 环境工程 环境工程
  • 水处理技术水处理技术
  • 生物技术是生物技术.

背景情况:

  • 氨 (AN) 是废水中常见的污染物.
  • 生物过器 (BF) 对于去除AN是有效的,但需要优化条件.
  • 了解操作参数的影响是有效降解AN的关键.

研究的目的:

  • 用生物过器 (BF) 确定使用氨 (AN) 清除的最佳操作参数.
  • 研究碳比 (C/N),pH和液压负载 (HL) 对AN降解效率的影响.
  • 开发一种预测模型,用于在不同条件下的AN去除率.

主要方法:

  • 使用了响应表面方法 (RSM) 与中央复合设计 (CCD).
  • 第二阶多项式模型与AN去除率的实验数据相匹配.
  • 使用统计分析 (ANOVA) 来验证模型的准确性和显著性.

主要成果:

  • 该模型准确地预测了AN移除率,ANOVA证实了其可靠性.
  • 确定了AN去除的最佳条件:C/N比率为18.95,pH为7.78,HL为1.04d-1.
  • 预测最大AN去除率为91.90%,实验验证达到91.37%.

结论:

  • 该研究成功优化了生物过器中AN去除的关键参数.
  • 已建立的模型为预测和提高BF绩效提供了有价值的工具.
  • 这些发现为工业废水处理过程提供了实用指导,重点是减少AN.