相关实验视频

Updated: Jun 8, 2025

Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O

Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O

Published on: October 7, 2020

在真空紫外线照射下同时进行脱和脱

Yuanzhong Lin¹, Shuang Liu², Yuxin Zeng¹

¹State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, PR China.

|November 8, 2024

概括

真空紫外线 (VUV) 照射使得水中的酸盐 (NO3−) 和 (NH4+) 能够同时去除. 这一过程通过防止反应性物种的火而避免能源浪费,提高了去除效率.

科学领域:

环境化学环境化学
水处理技术水处理技术
先进的氧化过程先进的氧化过程

背景情况:

酸盐 (NO3−) 和 (NH4+) 是水中普遍存在的污染物.
同时的脱和脱是具有挑战性的,因为高能量障碍的比例化.

研究的目的:

用真空紫外线 (VUV) 照射来评估同时除和脱的性能.
阐明在VUV下去除的反应机制和动力学.

主要方法:

在VUV照射下研究了同时去除NO3−和NH4+.
使用伪第一阶模型分析了反应动力学.
采用自由基捕获和电子自旋共振 (ESR) 来识别反应途径.

主要成果:

通过VUV辐射,可以同时减少NO3−和氧化NH4+.
反应动力学遵循具有特定速率常数的伪第一阶模型.
无机离子的存在影响了反应速率;HCO3−和CO32−促进了去除.
确定了水合电子 (e<0xE2><0x82><0x90>q−) 和基 (·OH) 作为关键的反应物种.

结论:

紫外线照射提供了一种有效的方法,可以同时去除污染物.
该机制涉及e<0xE2><0x82><0x90>q−减少NO3−和OH氧化NH4+,防止自我灭.
优化NO3−/NH4+比率和工艺条件对于高效的同步转化至关重要.

关键词:

迪亚是什么意思迪亚是什么意思脱化过程中的脱.同时的脱化.真空紫外线是真空中的紫外线.

更多相关视频

Estimating Sediment Denitrification Rates Using Cores and N2O Microsensors

Estimating Sediment Denitrification Rates Using Cores and N2O Microsensors

Published on: December 6, 2018

Activating Molecules, Ions, and Solid Particles with Acoustic Cavitation

Activating Molecules, Ions, and Solid Particles with Acoustic Cavitation

Published on: April 11, 2014

相关概念视频

Metabolism of Chemolithotrophs

Metabolism of Chemolithotrophs

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.

1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Mechanism

1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO₂ Mechanism

Nitrous acid is a relatively weak and unstable acid prepared in situ by the reaction of sodium nitrite and cold, dilute hydrochloric acid. In an acidic solution, the nitrous acid undergoes protonation when it loses water to form a nitrosonium ion—an electrophile. Nitrous acid reacts with primary amines to give diazonium salts. The reaction is called diazotization of primary amines.