Scholarlink

<p>In this study, the use of recycled iron and aluminum waste as raw materials for microelectrolysis treatment of azo dye wastewater was investigated. A series of single-factor experiments were conducted to examine the effects of reaction time, feed amount, mass ratio, and pH on degradation efficiency. Additionally, an orthogonal experimental design was employed to compare the efficiency of the Fe–C and Al-C microelectrolysis methods in treating azo dye wastewater. The results indicate that, under optimal conditions (reaction time: 90&#xa0;min, iron filings: 2.5&#xa0;g, Fe‒C mass ratio: 1:2, pH: 5), the Fe‒C process achieved a decolorization rate of 94.72% and a COD removal rate of 72.24%. Under similar reaction conditions (reaction time: 90&#xa0;min, aluminum filings: 4&#xa0;g, Al‒C mass ratio: 1:1.5, initial pH: 8.38), the Al‒C process reached a decolorization rate of 90.50% and a COD removal rate of 73.28%. The Al‒C process exhibited superior performance, especially over a broader pH range, with enhanced efficiency when combined with coagulation. SEM images revealed varying degrees of anodic dissolution on the surfaces of the iron and aluminum filings, with the electrons released participating in redox reactions. FTIR and 3D EEM analyses confirmed that this waste utilization method effectively decolorized azo dye wastewater. In conclusion, this approach has dual benefits in wastewater treatment, achieving both waste resource utilization and pollution control.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Decolorization and COD Removal of Direct Sunlight-resistant Black G Dye Wastewater Using Fe/Al-C Micro-electrolysis

  • 期刊论文

  • 发表日期：

    2025年6月2日

查看全文
  • Pengyu Liu,
  • Binguo Yang,
  • Jiaming Yan,
  • Xiaojie Chen

摘要

In this study, the use of recycled iron and aluminum waste as raw materials for microelectrolysis treatment of azo dye wastewater was investigated. A series of single-factor experiments were conducted to examine the effects of reaction time, feed amount, mass ratio, and pH on degradation efficiency. Additionally, an orthogonal experimental design was employed to compare the efficiency of the Fe–C and Al-C microelectrolysis methods in treating azo dye wastewater. The results indicate that, under optimal conditions (reaction time: 90 min, iron filings: 2.5 g, Fe‒C mass ratio: 1:2, pH: 5), the Fe‒C process achieved a decolorization rate of 94.72% and a COD removal rate of 72.24%. Under similar reaction conditions (reaction time: 90 min, aluminum filings: 4 g, Al‒C mass ratio: 1:1.5, initial pH: 8.38), the Al‒C process reached a decolorization rate of 90.50% and a COD removal rate of 73.28%. The Al‒C process exhibited superior performance, especially over a broader pH range, with enhanced efficiency when combined with coagulation. SEM images revealed varying degrees of anodic dissolution on the surfaces of the iron and aluminum filings, with the electrons released participating in redox reactions. FTIR and 3D EEM analyses confirmed that this waste utilization method effectively decolorized azo dye wastewater. In conclusion, this approach has dual benefits in wastewater treatment, achieving both waste resource utilization and pollution control.