CHEMICAL RECYCLING | INNOVATION
lower temperatures than have previously been necessary for pyrolysis. Mixing with high shear in the extruder has a very positive effect on the use of catalysts. We are convinced that we can direct the chemical recycling process more precisely using lower temperatures, and this will lead to purer prod- ucts while at the same time having the potential to revolutionise the chemical plastics recycling process sequence and save energy.” Researchers at Northwestern University in the US announced in March that they have developed a molybdenum-catalyst system using moisture in ambient air to break PET into terephthalic acid in just four hours. Yosi Kratish, the study’s co-corre- sponding author, said: “What’s particularly exciting about our research is that we harnessed moisture from air to break down the plastics, achieving an exceptionally clean and selective process. By recovering the monomers, which are the basic building blocks of PET, we can recycle or even upcycle them into more valuable materials.”
New plants In June Versalis – the chemicals division of Italian multinational energy company Eni – unveiled a
demonstration plant using the company’s new proprietary technology called Hoop. The plant, for the chemical recycling of mixed plastic waste, is based at Versalis’s Mantua, Italy site. Hoop is intended to complement mechanical recycling, and converts mixed plastic waste into feedstock that can be used to produce new plastic materials which would be suitable for all applications. Versalis and its partner on the programme, Italian engineering firm SRS, claim the Hoop technology achieves high material recovery yields,
Above: Versalis opened the 6,000 tonnes per year Hoop demonstration plant in Mantua, Italy in June
Preparing Plastics for
Chemical Recycling Dry cleaning – Washing – Separation
More Information:
HALL 9D17
www.plato-technology.de
IMAGE: VERSALIS
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