相关实验视频

Updated: Jan 12, 2026

Electrochemically and Bioelectrochemically Induced Ammonium Recovery

Electrochemically and Bioelectrochemically Induced Ammonium Recovery

Published on: January 22, 2015

通过电化学氧化处理天然染料废水的处理:对阳极材料的比较分析和再利用的优化

Bárbara Saraiva¹, Nuno Belino², Rui Miguel²

¹Fiber Materials and Environmental Technologies (FibEnTech-UBI), Universidade da Beira Interior, R. Marquês de D'Ávila e Bolama, 6201-001, Covilhã, Portugal; Department of Chemistry, Universidade da Beira Interior, R. Marquês de D'Ávila e Bolama, 6201-001, Covilhã, Portugal.

Journal of environmental management

|November 5, 2025

概括

电化学氧化有效地处理石榴皮染料废水,使面料能够重复使用. 用添加的钻石阳极实现了高污染物去除,在最佳条件下平衡处理效率和能源使用.

科学领域:

环境化学环境化学
绿色化学绿色化学
废水处理技术废水处理技术

背景情况:

用Punica granatum等天然染料进行生态染色会产生需要先进处理的废水.
来自石榴皮染色的未经处理的废水显示出高化学氧气需求 (COD),低生物降解性和生态毒性.
在染色过程中再利用废水是可取的,但由于污染物持久性,这是具有挑战性的.

研究的目的:

为了评估电化学氧化处理真正的生态染色废水.
评估在新的亚麻织物染色中再利用经过处理的废水的可行性.
为了比较阳极材料 (BDD与基于Ti的MMO),以获得最佳的治疗性能.

主要方法:

电化学氧化实验使用添加钻石 (BDD) 和基于的混合金属氧化物 (MMO) 阳极.
优化操作条件:电流密度 (50 A m-2) 和应用电荷 (0.72 kC).
废水参数的分析:COD,颜色,生物降解性和生态毒性 (Daphnia magna).

主要成果:

该BDD阳极实现了>90%的COD减少和显著的矿化.
最佳处理 (4h,0.72 kC) 产生了无色废水,COD<400 mg L-1,改善了生物降解性 (0.35) 和降低了生态毒性 (2.0毒性单位).
经过处理的废水以50:50的比例与淡水生产的染色织物混合再利用,符合工业标准的颜色差异 (ΔE < 1) 和性.

结论:

使用BDD阳极的电化学氧化是一种可行的技术,用于处理石榴皮染料废水.
优化处理使废水可重复使用,减少对淡水的需求,并在织染料中促进循环经济原则.
4小时的处理提供了污染物去除,能源效率 (5.4千瓦时/m3) 和染色性能之间的最佳平衡.

关键词:

生态染色废水污水处理生态毒性生态毒性电氧化过程中的电氧化.混合的金属氧化物.这是一种Punica granatum.废水的再利用废水的再利用

更多相关视频

Use of a Battery of Chemical and Ecotoxicological Methods for the Assessment of the Efficacy of Wastewater Treatment Processes to Remove Estrogenic Potency

Use of a Battery of Chemical and Ecotoxicological Methods for the Assessment of the Efficacy of Wastewater Treatment Processes to Remove Estrogenic Potency

Published on: September 11, 2016

Self-standing Electrochemical Set-up to Enrich Anode-respiring Bacteria On-site

Self-standing Electrochemical Set-up to Enrich Anode-respiring Bacteria On-site

Published on: July 24, 2018

相关概念视频

Electrodeposition

Electrodeposition

Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...

Voltammetry: Stripping Methods

Voltammetry: Stripping Methods

Anodic Stripping Voltammetry (ASV), Cathodic Stripping Voltammetry (CSV), and Adsorptive Stripping Voltammetry (AdSV) are electrochemical techniques used to determine trace amounts of analytes in solution. These methods involve applying a potential to an electrode and measuring the resulting current.
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...

Electrolysis

Electrolysis

In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...