Abstract
Three high temperature processes of the electronic waste processing: smelting/incineration, pyrolysis and gasification were shortly discussed. The most distinctive feature of electronic waste is complexity of components and their integration. This type of waste consists of polymeric materials and has high content of valuable metals that could be recovered. The purpose of thermal treatment of electronic waste is elimination of plastic components (especially epoxy resins) while leaving non-volatile mineral and metallic phases in more or less original forms. Additionally, the gaseous product of the process after cleaning may be used for energy recovery or as syngas.
Highlights
Rapid economic growth has resulted in an increase of production of electrical and electronic equipment (EEE) which is one of the fastest growing global manufacturing and it is still developing
A significant amount of valuable materials contained in Waste printed circuit boards (WPCBs) make them worth being recycled
Pyrolysis can be considered as an alternative method of recycling electronic waste, because during the process organic content of waste is decomposed to product that can be used for energy recovery – the gas and to the solid combination of char and nonorganic materials, including metals, that can be recovered
Summary
Rapid economic growth has resulted in an increase of production of electrical and electronic equipment (EEE) which is one of the fastest growing global manufacturing and it is still developing. Directive 2012/19/EU [2] defines ‘electrical and electronic equipment’ or ‘EEE’ as equipment which is dependent on electric current or electromagnetic fields in order to work properly This type of waste includes large and small household appliances and IT equipments as computers, mobile phones, video and audio equipment. The development in production of electric and electronic waste is a cause of various environmental and economical problems This type of waste contains diverse toxic substances that could be released to environment during landfilling or inappropriate processing. Waste printed circuit boards (WPCBs) contain lots of valuable resources together with hazardous materials This type of waste contains heavy metals (i.e., lead, cadmium) and hazardous substances that may pollute environment if they are not properly treated. The gaseous, liquid or solid products after cleaning may be used for energy recovery
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