相关实验视频

Updated: Jan 6, 2026

Electrochemically and Bioelectrochemically Induced Ammonium Recovery

Electrochemically and Bioelectrochemically Induced Ammonium Recovery

Published on: January 22, 2015

电化学快捷方式脱与化学化相结合,用于低碳酸盐废水处理

Weixing Zhang¹, Furong Guo², Weiting Gong²

¹Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Applied & Environmental Chemistry, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, 430079, P. R. China.

Angewandte Chemie (International ed. in English)

|November 27, 2025

概括

这项研究引入了一种新的电化学脱化策略,可以有效地去除高度的酸盐,并产生低碳排放. 与传统方法相比,合工艺显著降低了能源消耗和运营成本.

科学领域:

环境化学环境化学
电化学电化学电化学
废水处理废水处理

背景情况:

传统的酸盐废水处理方法,如蒸发和生物脱,耗费大量能源,并产生高碳排放,特别是在超过1000mg-N L-1.1的度时.
高效的低碳解决方案对于管理高度酸盐废水至关重要.

研究的目的:

开发和展示高度酸盐废水的低碳,高能效的脱化战略.
用电化学方法将酸盐降解为酸盐与化学二化结合起来,以快速生成气.

主要方法:

电化学捷径脱 (ESD) 使用氧化物衍生的Cu泡电极将酸盐 (NO3−) 转化为酸盐 (NO2−).
化学二化,其中酸盐与硫酸盐 (NH2SO3−) 反应,产生气 (N2).
用模拟和工业高度酸盐废水测试合ESD-CD过程,由光伏电池供电.

主要成果:

实现了98.8%的酸盐去除效率,99.9%的N2选择性和95.3%的Faradaic效率,用于模拟废水 (5000 mg-N L-1).
证明了低能耗 (9.97 kWh kg-N−1) 和高的脱率 (24.87 g-N m−2 h−1).
工业废水 (3085.2 mg-N L-1) 的稳定性能,清除率高达96.6%,成本降低高达74.9%,二氧化碳排放量降低高达93.3%.

结论:

电化学捷径脱与化学透 (ESD-CD) 是一种高效和可持续的策略,用于处理高度酸盐废水.
与传统处理方法相比,这种方法可显著降低能源消耗,运营成本和碳足迹.
该工艺在工业废水管理中具有强大的实际应用潜力,特别是当它由太阳能电池等可再生能源供电时.

关键词:

化学的二化.电化学的捷径是脱化.高度酸盐废水的废水.低碳整治低碳整治

更多相关视频

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

Estimating Sediment Denitrification Rates Using Cores and N2O Microsensors

Estimating Sediment Denitrification Rates Using Cores and N2O Microsensors

Published on: December 6, 2018

相关概念视频

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.

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

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

Nitrous acid and nitric acids are two types of acids containing nitrogen, among which nitrous acid is weaker than nitric acid. Nitrous acid with a pKa value of 3.37 ionizes in water to give a nitrite ion and the hydronium ion.
The nitrous acid is unstable. Hence, it is formed in situ from a solution of sodium nitrite and cold aqueous acids such as hydrochloric or sulfuric acid. In an acidic solution, the –OH group of nitrous acid undergoes protonation to give oxonium ion, followed by...

Inorganic Nitrogen Assimilation

Inorganic Nitrogen Assimilation

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...

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.

Diazonium Group Substitution: –OH and –H

Diazonium Group Substitution: –OH and –H

Nitrous acid, a weak acid, is prepared in situ via the reaction of sodium nitrite with a strong acid under cold conditions. This nitrous acid prepared in situ reacts with primary arylamines to form arenediazonium salts. Such reactions are known as diazotization reactions. As shown in Figure 1, the formation of arenediazonium salts begins with the decomposition of nitrous acid in an acidic solution to give nitrosonium ions.

Overview of Nitrogen Metabolism

Overview of Nitrogen Metabolism

Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of ammonia, ammonium ions, nitrate, nitrite, or nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...