Recycling of Wastes Plastics and Tires from Automotive Industry

Abstract

Waste tires (granulate) and selected plastics from the automotive industry were evaluated by using the tertiary (pyrolysis) and quaternary (calorimetry) recovering. Pyrolysis is proving to be an environmentally friendly alternative to incineration and inefficient landfilling. Currently, the main challenges for pyrolysis of plastic waste are unavailability and inconsistent quality of feedstock, inefficient and hence costly sorting, and last but not least insufficient regulations around plastic waste management. Waste plastics and tire materials were characterized by TG/DTG analysis, Py-GC/MS analysis and calorimetry. TG analysis of the investigated materials gives the typical decomposition curves of synthetic polymers. The tested samples had the highest rate of weight loss process in the temperature range from 375 °C to 480 °C. Analytical pyrolysis of the tested polymers provided information on a wide variety of organic compounds that were released upon thermal loading of these materials without access to oxygen. Analytical pyrolysis offers valuable information on the spectrum of degradation products and their potential uses. Based on the results of calorimetry, it can be stated that the determined calorific value of selected plastic and rubber materials was ranging from 26.261 to 45.245 MJ/kg depending on the ash content and its composition.

Fire Resistance Evaluation of New Wooden Composites Containing Waste Rubber from Automobiles

“…Based on the results of Kunioka et al [ 48 ], the combustion energy of rubbers related linearly to the carbon content of these samples. The calorific value of rubber materials based on the findings of several authors ranged from 22.2 to 31 MJ·kg −1 [ 48 , 49 , 50 , 51 ]. According to Danon and Gorgens [ 7 ], tires were composed of approximately 90% of organic materials and, compared to other rubber materials, contained higher calorific values ranging from 29 to 39 MJ·kg −1 .…”

Pyrolysis Processes and Physiochemical Properties of Liquid Hydrocarbon Fuel from Waste Plastics

“…1 presents the calorific values of plastics compared with conventional fuels. The calorific value of waste tires was 36.441 ± 0.783 MJ kg −1 49.…”

4R of rubber waste management: current and outlook

“…The fuel oil produced could be refined to filter out the sulfur, char, and ash to ensure better engine performance. The gas can be used to drive the generation of heat and electricity in power plants [ 65 ], meanwhile the CB can be blended into plastic, EVA foam, or converted into activated carbon [ 55 ].…”