Thermal and thermo-catalytic degradation of polyolefins as a simple and efficient method of landfill clearing

• Autorzy: Tomaszewska K. , Kałużna-Czaplińska J. , Jóźwiak W. K.
• Języki publikacji: EN

Abstrakty

EN

Thermal degradation of the low density polyethylene (LDPE), polypropylene (PP) and the municipal waste plastics was investigated. The thermo-catalytic degradation of LDPE and PP was studied in the presence of the following catalysts: four different types of montmorillonite: K5, K10, K20, K30 and – for comparison – zeolites (natural – clinoptilolite, Y Na+ and YH+). Thermal analyses TG-DTA-MS of polymers and polymercatalyst mixtures were carried out in an argon flow atmosphere in isothermal and dynamic conditions. The following order was found: in lowering the reaction temperature for LDPE degradation YH+> mK5 > mK20 = mK30 >mK10 > NZ > YNa+; for PP degradation: mK20 > mK5 = mK30 >mK10 > YH+> NZ >YNa+. The activity tests were carried out in a stainless steel batch reactor under atmospheric pressure in a wide temperature range of up to 410°C, and using the atmosphere of argon flow. The liquid products were analysed by the GC-MS method. The hydrocarbons in the liquid products from thermal degradation of polymers were broadly distributed in the carbon fractions of C8 to C26 – for LDPE and C6 to C31for PP.

Słowa kluczowe

EN

polyethylene; polypropylene; polyolefins; municipal waste plastics; thermal degradation; thermocatalytic degration; liquid fuels component; kinetics

PL

polietylen; polipropylen; poliolefin; komunalne odpady z tworzyw sztucznych; degradacja termiczna; degradacja termokatalityczna; składniki płynnego paliwa; kinetyka

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2010
• Tom: Vol. 12, nr 3
• Strony: 50--57
• Opis fizyczny: Bibliogr. 7 poz., rys., tab.

Twórcy

autor

Tomaszewska K.

autor

Kałużna-Czaplińska J.

autor

Jóźwiak W. K.

• Technical University of Lodz, Institute of General and Ecological Chemistry, ul. Żeromskiego 116, 90-924 Łódź, Poland,

Bibliografia

• 1. PlasticsEurope. (2009, October). The Compelling Facts About Plastics 2009. An analysis of European plastics production, demand and recovery for 2008. Retrieved November 3. 2009, from http://www.plasticseurope.org/Documents/Document/20100225141556-Brochure_UK_FactsFigures_2009_22sept_6_Final-20090930-001-EN-v1.pdf.
• 2. Rabek, J.F. (2008). Contemporary knowledge of polymers. Warszawa, Polska: Wydawnictwo Naukowe PWN (in Polish).
• 3. Mucha, M. (2002). Polymers and ecology. Łódź, Polska: Wydawnictwo Politechniki Łódzkiej (in Polish).
• 4. Tomaszewska, K. & JóŸwiak, W.K. (2009). Aluminosilicates in thermo-catalytic degradation of low density polyethylene, Pol. J. Environ. Stud. 18 1B, 232 – 236.
• 5. Pielichowski, K. & Njugana, J. (2005). Thermal degradation of polymeric materials. Shawbury, United Kingdom: Rapra Technology Limited.
• 6. Reverte, C., Dirion, J.L. & Cabassud, M. (2007). Kinetic model identification and parameters estimation from TGA experiments. J. Anal. Appl. Pyrolysis 79, 297 – 305. DOI: 10.1016/j.jaap.2006.12.021.
• 7. Abate, L., Blanco, I., Pollicino, A. & Recca, A. (2002). Determination of degradation apparent activation energy values of polymers Regression of kinetic parameters derived from TG data. J. Therm. Anal. Calorim. 70, 63 – 73.