Energy recovery of waste plastics.

Energy recovery of waste plastics. 1

Ryszard Wasielewski & Tomasz Siudyga

The widespread use of plastics is accompanied by an adverse phenomenon of waste generation, which constitutes a serious ecological problem. In recent years, the introduction of strong restrictions on the landfill of organic waste and the recommendation to achieve high recovery and recycling rates for these waste groups, in which a significant proportion of the EU's Plastics (OTS). The main source of this waste is used packaging, as well as construction and automotive waste (fig. 1). Figure. 1. Origin structure of OTS in the European Union in 2011 [1] In the first place, OTS are recycled in material and raw materials, and when it is unprofitable, energy recovery. According to Plasticseurope Foundation, in 2011, the 25.1 million Mg of plastic waste [1]. 6.3 million mg of these wastes were recycled and 8.6 million mg of energy recovered. The remainder was placed on the landfills. Figure. 2. Comparison of the development directions of OTS in Poland and EU countries in 2011 In Poland, from a stream of municipal waste, as a result of selective collection, it recovers only about 8% of plastic waste [2]. Ok. 23% of these wastes are recycled, but a systematic increase has been observed for several years. Another 15% of waste is recycled by using it for the production of solid secondary fuels [1]. Figure 2 illustrates the different directions for the development of OTS in Poland and the EU in 2011. Shown on the graph (fig. 2) data show that energy recovery from OTS in other EU countries plays a much greater role than in Poland. In some countries, such as Switzerland, Denmark, Sweden, Belgium, Austria or the Netherlands, the share of energy recovery has already exceeded 60% [1]. Energy recovery from OTS is most often done in waste incineration plants and cement kilns. Attempts to co-incinerating OTS in professional energy installations using particulate and fluid boilers [3 ÷ 6] are also undertaken. In some countries (e.g. Japan and Germany) OTS are also used in metallurgical processes [7, 8]. The article presents the possibilities for the recovery of waste energy from polymers and related organisational and legal aspects

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