Rapid and accurate quality assessment method of recycled food plastics VOCs by electronic nose based on Al-doped zinc oxide
Zaytsev V. Fedorov F.S. Goikhman B. Maslennikov A. Mashukov V. Simonenko N.P. Simonenko T.L. Gabdullina D. Kovalenko O. Simonenko E.P. Kvitko P. Penkova O. Satybaldina D. Seilov S. Dubinina T.S. Gorin D.A. Nasibulin A.G.
15 September 2023Elsevier Ltd
Journal of Cleaner Production
2023#418
Plastic recycling technologies are being actively developed and implemented to cope with increasing volume of plastic. Such technologies require new analytical tools able to control the quality of the recycled polymers to be further integrated in production processes. Here, we propose a rapid and selective quality assessment method for polymer materials made of high-density polyethylene using electronic nose with aluminum doped zinc oxide sensing material in combination with the RandomForestClassifier machine learning tool. We test total content of volatile organic compounds both odor-active responsible for the smell and odorless of primary and secondary plastics, and evaluate corresponding organic vapors emitted by the plastics by headspace gas chromatography and mass-spectrometry at optimized conditions like sample temperature, sensor signal recovery time. The electronic nose demonstrated the good correlation of vector signal with the emitted volatile compounds with an accuracy more than 98.5% when discriminating between primary and secondary plastics. Addition of zeolites to the recycled plastic is shown to decrease the appearance of off-odors.
Al-doped zinc oxide , Electronic nose , Machine learning protocols. , Plastics , Polymer odors assessment
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Skolkovo Institute of Science and Technology, 3 Nobel str., Moscow, 121205, Russian Federation
SIBUR LLC, 16/1 Krzhizhanovskiy str., Moscow, 117218, Russian Federation
SIBUR PolyLab LLC, Skolkovo Innovation Center 2 Bolshoy Boulevard, Moscow, 121205, Russian Federation
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., Moscow, 119991, Russian Federation
NIOST LLC, 2 bld. 270 Kuzovlevsky Tract, Tomsk, 634022, Russian Federation
L.N. Gumilyov Eurasian National University, 2 Satpayev str., Astana, 010008, Kazakhstan
Skolkovo Institute of Science and Technology
SIBUR LLC
SIBUR PolyLab LLC
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
NIOST LLC
L.N. Gumilyov Eurasian National University
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