Abstract
Waste management of half-finished products and thermosetting wastes Plastics are the widely used materials and their application increases every year considerably. Therefore, appropriate waste management policy should be used in relation to the utilization or recycling of scrap plastic components. Although most of these materials refer to thermoplastics, a huge widening demand is observed in the field of thermosets. They find a wide range of applications as the dielectric or insulating materials, high-current breaker switches, sensors and other electrical and electronic devices, as well as high-resistant sleeves in mechanical devices. The substantial part of the thermohardening products is used in a car, heavy, light, chemical industry and agriculture as well. The thermohardening wastes contain a large amount of combustible fraction as thermosetting resins, and various materials as a different kind of metals group like ferromagnetic and copper. Therefore, they are potential sources of energy and secondary materials. Application of thermal methods for the utilization of these wastes in the pyrolysis process was investigated. The development of the utilization of these wastes with the possibility of gas and liquid substance recovery as a potential source of energy on a commercial scale is the main aim of this paper.
Highlights
The problems connected with waste management and waste utilization belong to the most serious problems of the present industrial civilization
Stable growth of the quantity of waste material from plastics causes large hazard for the natural environment because most of these wastes are warehoused on municipal landfills where they take up about 40% volumes[1]
The final results of the pyrolysis experiments are presented in two series
Summary
The problems connected with waste management and waste utilization belong to the most serious problems of the present industrial civilization. Stable growth of the quantity of waste material from plastics (thermoplastic and thermosetting) causes large hazard for the natural environment because most of these wastes are warehoused on municipal landfills where they take up about 40% volumes[1]. Various thermoplastics (polyethylene, polypropylene, polystyrene) may be re-melted and re-used in new products, so recycling of thermoplastic components is quite well recognized. A much more complicated situation regards thermosets (e.g. polyurethanes, phenolic, epoxy, furan and furfurol resins), which cannot be re-melted and reformed into new products. Currently there is no explicit utilization option for cured resins and recycling was not a popular option for the minimization of these wastes either, UE places enormous emphasis on the recycling and utilization of plastic wastes (94/ 62/EU European Union directive on waste packaging and recycling regulation)
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