Enhanced mitigation of VOCs, CO2 and odour emissions from organic fraction of solid waste using innovative biodegradable patches generated by supercritical carbon dioxide impregnation

Q1 Environmental Science Case Studies in Chemical and Environmental Engineering Pub Date : 2024-07-26 DOI:10.1016/j.cscee.2024.100866

Silvia De Paola , Stefania Mottola , Giuseppina Oliva , Vincenzo Naddeo , Iolanda De Marco

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Abstract

Improper management of agro-industrial food waste represents a significant issue due to the associated uncontrolled release of climate-altering gases, total volatile organic compounds (TVOCs) and odours. The present study proposes an innovative solution to mitigate these emissions with supercritical carbon dioxide impregnation, employed to load R-Carvone into patches made from compostable pouches directly applied on two matrices: pork fat and tomato peel and seeds. Under optimized operating conditions (33 °C, 200 bar, 2 bar min-1) patches with 54 % R-Cav were produced, resulting in reduced CO2 and TVOCs emissions up to 200 and 0.2 ppm per gram, and reduced associated odour annoyance.

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利用超临界二氧化碳浸渍生成的创新型生物降解斑块，加强减缓固体废物有机部分的挥发性有机化合物、二氧化碳和臭气排放

农用工业食品废弃物管理不当是一个重大问题，因为它会不受控地释放出改变气候的气体、总挥发性有机化合物（TVOC）和气味。本研究提出了一种利用超临界二氧化碳浸渍来减少这些排放的创新解决方案，将 R-Carvone 装入由可堆肥小袋制成的贴片中，直接应用于两种基质：猪脂肪和番茄皮及种子。在优化的操作条件下（33 °C、200 bar、2 bar min-1），生产出了含 54 % R-Cav 的补丁，从而将二氧化碳和 TVOCs 的排放量分别降低到每克 200ppm 和 0.2ppm，并减少了相关的气味干扰。

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