从废阴极射线管玻璃中回收铅的化学-电化学工艺概念
Chemical-Electrochemical Process Concept for Lead Recovery from Waste Cathode Ray Tube Glass.
作者信息
Imre-Lucaci Árpád, Fogarasi Melinda, Imre-Lucaci Florica, Fogarasi Szabolcs
机构信息
Department of Chemical Engineering, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 11 Arany Janos Street, 400028 Cluj-Napoca, Romania.
Department of Food Engineering, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, Calea Mănăstur 3-5, 400372 Cluj-Napoca, Romania.
出版信息
Materials (Basel). 2021 Mar 22;14(6):1546. doi: 10.3390/ma14061546.
This paper presents a novel approach for the recovery of lead from waste cathode-ray tube (CRT) glass by applying a combined chemical-electrochemical process which allows the simultaneous recovery of Pb from waste CRT glass and electrochemical regeneration of the leaching agent. The optimal operating conditions were identified based on the influence of leaching agent concentration, recirculation flow rate and current density on the main technical performance indicators. The experimental results demonstrate that the process is the most efficient at 0.6 M acetic acid concentration, flow rate of 45 mL/min and current density of 4 mA/cm. The mass balance data corresponding to the recycling of 10 kg/h waste CRT glass in the identified optimal operating conditions was used for the environmental assessment of the process. The General Effect Indices (GEIs), obtained through the Biwer Heinzle method for the input and output streams of the process, indicate that the developed recovery process not only achieve a complete recovery of lead but it is eco-friendly as well.
本文提出了一种通过应用化学 - 电化学联合工艺从废旧阴极射线管（CRT）玻璃中回收铅的新方法，该工艺能够同时从废旧CRT玻璃中回收铅并实现浸出剂的电化学再生。基于浸出剂浓度、循环流速和电流密度对主要技术性能指标的影响，确定了最佳操作条件。实验结果表明，在乙酸浓度为0.6 M、流速为45 mL/min和电流密度为4 mA/cm²时，该工艺效率最高。在确定的最佳操作条件下，对应于每小时回收10 kg废旧CRT玻璃的质量平衡数据用于该工艺的环境评估。通过Biwer Heinzle方法获得的该工艺输入和输出流的总体效应指数（GEIs）表明，所开发的回收工艺不仅能实现铅的完全回收，而且对环境友好。
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