Scholarly record
CO-PYROLYSIS OF POLYMERS AND PLANT BIOMASS
Abstract
Among the existing methods of TMS processing, the most attention is paid to pyrolysis due to such advantages of this method as a high level of process control, the ability to adapt the process to a different composition of raw materials with a high yield of target products with specified characteristics, a closed-loop process, etc. [1, 2]. The study is devoted to the study of the process of co-pyrolysis and is aimed at developing a technology for thermocatalytic processing of complex organic waste of anthropogenic origin. The model mixtures included plant biomass waste and polymer samples (PEX, LDPE, PET, PA, PS, ABS) in various weight ratios. DSC results for a model mixture containing pine sawdust and PET showed that the thermodestruction process of PET occurs at lower temperatures and is likely accelerated by the process of cellulose destruction. TGMS analysis of a model mixture containing pine sawdust and PET indicates a change in the molecular weight distribution of the volatile thermodestruction products, which may be related to a change in the thermodestruction mechanism caused by the mutual influence of the components. With an increase in the proportion of pine sawdust in the model mixture, the temperature of destruction of the PET polymer decreases, and to a lesser extent, the temperature of destruction of the cellulose component of the plant biomass decreases. According to the data from thermogravimetric analysis, the pyrolysis of model mixtures containing pine sawdust and PET resulted in a decrease in the temperature of destruction of pine wood (by 2.5 ) and PET (by 10.7 ), which may be due to the mutual influence of the initial components during the thermal destruction process. The least thermostable mixture containing pine sawdust and PET is a model mixture with a mass ratio of the initial components of 3:1.
Publication details
References2
Suriapparao D., Ojha D., Ray T., & Vinu R. (2014). Kinetic analysis of copyrolysis of cellulose and polypropylene. J Therm Anal Calorim,117, 1441-51.
Zhang X., Lei H., Chen S., & Wu J. (2016). Catalytic co-pyrolysis of lignocellulosic biomass with polymers: A critical review, Green Chem. 18, 4145?4169. DOI: 10.1039/C6GC00911E.