| Title | Evaluation of Waste Blends with Sewage Sludge as a Potential Material Input for Pyrolysis |
|---|---|
| ID_Doc | 12658 |
| Authors | Kubonova, L; Janakova, I; Malikova, P; Drabinova, S; Dej, M; Smelik, R; Skalny, P; Heviankova, S |
| Title | Evaluation of Waste Blends with Sewage Sludge as a Potential Material Input for Pyrolysis |
| Year | 2021 |
| Published | Applied Sciences-Basel, 11.0, 4 |
| Abstract | In line with the requirements of the circular economy, the European Union's waste management legislative changes also concern the treatment of sewage sludge. Although sewage sludge production cannot be prevented, its quantities may be reduced by the synergetic effect of energy recovery via choosing a proper technology. Sewage sludge is difficult to apply as fuel alone, because of its high moisture and ash content. However, its energy use will be increased by adding suitable waste materials (different types of plastics, waste tires and paper rejects). Most recently, the thermal utilization of sewage sludge via incineration or pyrolysis has grown in importance. This article describes the fuel parameters of particular waste materials and of their blends with sewage sludge in connection with laboratory-scale thermal decomposition in an inert atmosphere, for their potential use in a semi-pilot plant pyrolysis unit. For pyrolytic application, the results of thermogravimetric analysis are needed in order to know the maximal temperature of thermal decomposition in an inert atmosphere, maximal mass losses, and weight loss rates. The samples of different thermoplastics mixed with sewage sludge, and low-density polyethylene blends with sewage sludge, had the lowest residual masses (70-74%) and the highest weight loss rates (11-19%/min). On the other hand, the blend of polyester rejects from tire processing, paper rejects and sewage sludge had the second highest residual mass (60%) and the lowest weight loss rate (3%/min). |
| https://www.mdpi.com/2076-3417/11/4/1610/pdf?version=1612955875 |
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