Amghar Nabil, Moreno Virginia, Sánchez-Jiménez Pedro E, Perejón Antonio, Pérez-Maqueda Luis A
Instituto de Ciencia de Materiales de Sevilla, C. S. I. C. - Universidad de Sevilla, C. Américo Vespucio, 49, 41092 Sevilla, Spain.
Instituto de Ciencia de Materiales de Sevilla, C. S. I. C. - Universidad de Sevilla, C. Américo Vespucio, 49, 41092 Sevilla, Spain; Instituto de Tecnología de Materiales (ITM), Universitat Politècnica de València (UPV), Plaza Ferrándiz y Carbonell 1, Alcoy, Alicante 03801, Spain.
J Environ Sci (China). 2024 Jun;140:230-241. doi: 10.1016/j.jes.2023.07.028. Epub 2023 Jul 27.
Cigarette butts (CBs) are one of the most common types of litter in the world. Due to the toxic substances they contain, the waste generated poses a harmful risk to the environment, and therefore there is an urgent need for alternative solutions to landfill storage. Thus, this work presents a possible revalorization of this waste material, which implies interesting environmental benefits. CBs were used as sacrificial templates for the preparation of CaO-based materials by impregnation with calcium and magnesium nitrates followed by flaming combustion. These materials presented enhanced porosity for their use in the Calcium Looping process applied either to thermochemical energy storage or CO capture applications. The influence of the concentration of Ca and Mg in the impregnating solutions on the multicycle reactivity of the samples was studied. An improved multicycle performance was obtained in terms of conversion for both applications.
烟头是世界上最常见的垃圾类型之一。由于其所含的有毒物质，产生的废弃物对环境构成有害风险，因此迫切需要替代填埋储存的解决方案。因此，这项工作提出了这种废料可能的再利用方式，这意味着有趣的环境效益。通过用硝酸钙和硝酸镁浸渍，然后进行火焰燃烧，将烟头用作制备氧化钙基材料的牺牲模板。这些材料具有更高的孔隙率，可用于热化学储能或二氧化碳捕集应用的钙循环过程。研究了浸渍溶液中钙和镁的浓度对样品多循环反应性的影响。在两种应用的转化率方面都获得了改进的多循环性能。
