This paper provides a detailed analysis of the recycling of Tetra Pak waste via pyrolysis to recover the most valuable solid products within its composition, char and aluminum, and the subsequent application of the char in the adsorption of mercury in aqueous solutions. The impact of the Tetra Pak pyrolysis conditions on the char and aluminum yields and their associated properties have been analyzed using a variety of physico-chemical techniques. Tetra Pak-derived chars showed outstanding mercury adsorption properties (up to 215.7 mg/g) that can be attributed to the heterogeneous surface chemistry composed mainly by oxygenated functional groups associated to C, Ca, Al and Si. Tetra Pak pyrolysis allowed an effective recovery of aluminum at pyrolysis temperatures of 600 and 800 °C. Higher temperatures, up to 1000 °C, promote its oxidation to aluminum oxide and hydroxide. These findings contribute to increase the versatility in the Tetra Pak reuse to develop new adsorbents with promising performance for water treatment and the associated recovery of aluminum for further industrial applications.

本文详细分析了利乐废料通过热解回收以回收其成分中最有价值的固体产品，炭和铝，以及炭在水溶液中汞吸附中的后续应用。使用多种物理化学技术分析了利乐热解条件对焦炭和铝收率及其相关性能的影响。利乐包装的炭显示出出色的汞吸附性能（高达215.7 mg / g），这可归因于主要由与C，Ca，Al和Si相关的氧化官能团组成的非均质表面化学。Tetra Pak热解可以在600和800°C的热解温度下有效回收铝。更高的温度，高达1000°C，促进其氧化成氧化铝和氢氧化物。这些发现有助于提高利乐在再利用中的多功能性，以开发出具有前景的新型吸附剂，用于水处理以及铝的相关回收，以用于进一步的工业应用。