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Can lightweight aggregate be produced from waste materials using microwave radiation?

Members of the MSAGroup - Materials/Synthesis/Application team consisting of: Malgorzata Franus, Jaroslaw Madej, Rafal Panek, Ewelina Grabias-Blicharz have published a paper entitled. "Effect of microwave radiation temperature and content of different solid waste on the microstructure and physicomechanical properties of lightweight aggregates", which investigated the effect of microwave exposure temperature and raw material composition on the physicomechanical, structural and morphological properties of aggregates. The research, published in the prestigious international journal Ceramics International (IF =5.2), included an evaluation of changes in the physicochemical properties of lightweight aggregates containing varying amounts of waste raw materials namely fly ash (60, 70, 80 wt%), waste rock (10, 20 and 30 wt%), glass cullet (10 wt%) and waste solution after hydrothermal zeolite synthesis. The conducted research and determined parameters showed that the proposed technology makes it possible to obtain a full-fledged and environmentally friendly lightweight aggregate during short thermal processing of raw materials, thus saving energy while fitting in with the principles of sustainable development. The research was carried out within the framework of the research project entitled. "The use of waste materials in the microwave technology of lightweight aggregates production" No. POIR.04.01.04-00-0019/20 funded by the National Center for Research and Development.

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