In this work, the low-temperature pyrolysis of a real plastic mixture sample collected at a WEEE-authorised recycling facility has been investigated. The sample was pyrolysed in a batch reactor in different temperature and residence time conditions and auto-generated pressure by following a factorial design, with the objective of maximising the liquid (oil) fraction. Furthermore, the main polymers constituting the real sample were also pyrolysed in order to understand their role in the generation of oil. The pyrolysis oils were characterised and compared with commercial fuel oil number 6. The results showed that in comparison to commercial fuel oil, pyrolysis oils coming from WEEE plastic waste had similar heating values, were lighter and less viscous and presented similar toxicity profiles in fumes of combustion.
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http://dx.doi.org/10.3390/ma16186306 | DOI Listing |
Bioresour Technol
December 2024
Instituto de Ciencias Biológicas y Biomédicas del Sur, INBIOSUR (CONICET-UNS), San Juan 671, 8000 Bahía Blanca, Argentina; Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur (UNS), San Juan 670, 8000 Bahía Blanca, Argentina. Electronic address:
Tenebrio molitor has gained attention as a potential solution for plastic pollution. This study explored the biodegradation of polystyrene (PS) by mealworms co-fed with rice bran (RB) under an optimized rearing scheme. The RB co-diet significantly increased PS consumption by two-fold compared to wheat bran (WB).
View Article and Find Full Text PDFSpectrochim Acta A Mol Biomol Spectrosc
November 2024
Department of Energy Engineering and Physics, Amirkabir University of Technology (Tehran Polytechnic), P.O. Box 15875-4413, Tehran, Iran; Faculty of Science, Department of Physics, Imam Khomeini International University, P.O. Box 34149-16818, Qazvin, Iran.
Here, the real time pyrolysis characteristics, the degradation degree and the aging time of the transformer oil have been investigated using laser induced fluorescence (LIF) spectroscopy. The signal elevation up to four-fold and the lucid red shift up to 10 nm are obtained against those of fresh oil. The fluorescence signal and the corresponding spectral shift are demonstrated to follow a linear correlation in terms of aging time.
View Article and Find Full Text PDFJ Chromatogr A
January 2025
Department of Chemical Engineering, Pennsylvania State University, University Park, PA, 16801, USA; Department of Energy and Mineral Engineering, Pennsylvania State University, University Park, PA, 16801, USA; Institute of Energy and the Environment, Pennsylvania State University, University Park, PA, 16801, USA. Electronic address:
Foods
October 2024
School of Materials and Chemical Engineering, Hunan City University, Yiyang 413000, China.
Int J Mol Sci
October 2024
Chemical & Petroleum Engineering Department, F1 Building, United Arab Emirates University, Al-Ain P.O. Box 15551, United Arab Emirates.
The exhaustion of conventional light oils necessitates the shift towards unconventional sources such as biomass, heavy oil, oil shale, and coal. Non-catalytic thermal cracking by a free radical mechanism is at the heart of the upgrading, prior to refining into valuable products. However, thermal pyrolysis is hindered by the formation of asphaltenes, precursors to coke, limiting cracking, causing equipment fouling, and reducing product stability.
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