Environmentally clean ceramics manufacture with the application of hazardous car production sludge and galvanic process glass waste

New ceramic composites were developed employing hazardous car production sludge (CPS) and galvanic process glass waste with high heavy metal content. They have been applied as valuable red ceramic components sintered at 700, 750, 800, 850, 900, and 950 °C, imparting flexural resistance of up to 17.6 MPa, water absorption at 950 °C of 6.53–10.45%, and linear shrinkage of 5.24–6.29%. Structure formation studies, performed by the XRD, SEM, EDS, and LAMMA methods demonstrated the synthesis of amorphous glassy material with the slight inclusion of mullite Al 6 Si 2 O 13 . Car production sludge and galvanic process glass waste act as intensifiers of the ceramics’ structures formation processes. The ceramics’ leaching and solubility tests by the atomic absorption spectroscopy method showed a robust chemical bonding of heavy metals from the hazardous raw materials in insoluble structures. According to Brazilian standards, the new materials can be used for production of tiles, bricks, blocks, and similar ceramic materials with high environmental efficiency.