Scholarlink

<p>Aluminum was recovered through the synergistic treatment of waste acid generated from the aluminum foil industry and aluminum anodizing sludge (AAS), substantially lowering the disposal costs associated with these hazardous wastes. The effects of stirring speed, liquid-to-solid (L/S) ratio, acid concentration, and reaction temperature on aluminum leaching efficiency were evaluated. The results indicated that the leaching process was initially impeded by the common ion effect; this inhibition was effectively alleviated by increasing the L/S ratio. Under optimized conditions of 3 N acid concentration, 110°C, an L/S ratio of 25&#xa0;mL/g, and a duration of 60&#xa0;min, the aluminum leaching efficiency exceeded 99%, thereby avoiding the generation of secondary solid hazardous waste. Kinetic analysis revealed that the leaching process follows a mixed-control mechanism based on the shrinking core model, with an apparent activation energy of 26.45&#xa0;kJ/mol. A semi-empirical kinetic model was established. This study demonstrates an economically feasible and environmentally sustainable strategy for aluminum resource recovery.</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

Synergistic Utilization of Aluminum Anodizing Sludge and Foil Industry Waste Acid: A Study on Leaching Kinetics and Resource Recovery

  • 期刊论文

  • 发表日期：

    2026年6月29日

查看全文
  • Shiyu Yan,
  • Teng Liu,
  • Xiangyue Liu,
  • Gang Yang

摘要

Aluminum was recovered through the synergistic treatment of waste acid generated from the aluminum foil industry and aluminum anodizing sludge (AAS), substantially lowering the disposal costs associated with these hazardous wastes. The effects of stirring speed, liquid-to-solid (L/S) ratio, acid concentration, and reaction temperature on aluminum leaching efficiency were evaluated. The results indicated that the leaching process was initially impeded by the common ion effect; this inhibition was effectively alleviated by increasing the L/S ratio. Under optimized conditions of 3 N acid concentration, 110°C, an L/S ratio of 25 mL/g, and a duration of 60 min, the aluminum leaching efficiency exceeded 99%, thereby avoiding the generation of secondary solid hazardous waste. Kinetic analysis revealed that the leaching process follows a mixed-control mechanism based on the shrinking core model, with an apparent activation energy of 26.45 kJ/mol. A semi-empirical kinetic model was established. This study demonstrates an economically feasible and environmentally sustainable strategy for aluminum resource recovery.