engleski

Composition Analysis, Characterization and Physico-Chemical Properties of Separately Collected Packaging Waste Residual Waste Streams

World plastic materials production has increased 240 times in the last 70 years and now consists of hundreds of different polymers but only a few of them are used in everyday products and account for the production of the majority of all polymers. The biggest share of polymers use is in packaging production (around 40%) followed by construction (20%), while other significant consumption of polymers can be found in electronic, electrical, automotive, sports, household leisure and agriculture industry. The life cycle of material is determined by its use, where some products lifespan is measured in decades while others reach the end of the life in less than a year. Some of the most problematic plastic products and co- products are packaging waste which is discarded soon after product sale, thus they reach waste streams very quickly. These wastes are mainly used for material recovery while residual waste can be used in energy recovery technologies. Because of this, it is important to know the characteristics of waste streams that consist of such wastes. This research analyses composition and morphological characteristics of separately collected packaging waste stream, but puts emphasis on residual waste fraction after each sequential separation. Residual fraction of packaging waste stream, which is not used for material recovery, is sampled during the municipal waste separation and recovery chain, thus, the efficiency of primary and secondary waste separation, as well as of tertiary, i.e. during refuse-derived fuel production, are tracked. Material characterisation and composition analysis results show that primary waste separation results in material with only 7% of contaminants and manual secondary waste separation efficiency ranges between 45 and 55%, while physico-chemical comparison results show very high level of separation quality of tertiary separation in RDF production step, thus produced RDF properties can be approximated through the use of input residual waste composition and technological characteristics of RDF production facility. Results show that both analysed MRF facilities produce residual waste fraction suitable for production of RDF usable in wide range energy recovery and fuel production technologies. Results of this analysis can be used by decision makers for planning the both environmentally and economically sustainable system for recovery of residual waste fractions from packaging waste management systems.

Composition analysis ; Physico-chemical properties ; Packaging waste separation ; Residual waste fractions ; Waste derived fuel production

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