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According to foreign media reports, although chemicals, food and other odorous substances are often sold in recyclable plastic containers, sometimes the absorption of odors makes these plastics unsuitable for recycling. But now there's a new way to get rid of those odors.
According to reports, this technology was developed by Professor Andres Fullana and researcher Andrea Cabanes from the University of Alicante in Spain. It can help remove volatile organic compounds in plastic containers - these volatile organic compounds The compound is absorbed into the polymer matrix of the plastic container. The researchers say this deodorization process is currently not possible through traditional cleaning and recycling methods.
Fullana first sorted, separated and pre-treated the used plastic containers, then crushed them into small particles, then chemically cleaned them with a special soap, rinsed and dried . Finally, odor removal is accomplished through a "steam distillation" step.
Steam distillation refers to passing steam through a material in a column. As the steam rises, it takes away the VOCs in the material. Later, when the steam condenses in the collection bottle, the VOCs contained in the liquid water can be separated and processed. That said, this process can also be used to obtain useful products, such as essential oils distilled from the leaves of the plant.
Fullana recently received a patent for their technology, and five companies have expressed interest in commercializing it.
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