Development of methodology to capture the gases generated in the production of ceramic materials using galvanic sludge as raw material

Reference	Presenter	Authors (Institution)	Abstract
06-141	Regina Felisberto	Felisberto, R.(IFRS- Campus Porto Alegre); Basegio, T.M.(UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL); Puga, M.L.(UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL); BERGMANN, C.P.(UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL);	The use of galvanic sludge in the formulation of new materials has been the subject of studies in recent decades, being necessary besides evaluation of the environmental compatibility of the material produced, verifies the environmental risks involved in its production. In this context, the purpose of this work was to develop a methodology to capture the gases emanated in the production of ceramics materials using galvanic sludge (hazardous waste - Class 1 ) and soda lime glass as raw materials. For this purpose, ceramic masses containing 1, 5, 10 and 20% by weight of sludge relative to the glass mass were prepared. The specimens were pressed and fired at temperatures of 750oC to 950oC, heating rate of 150oC / h, with a holding time of 2 hours. All of them have been environmentally compatible according to the leaching test (NBR 10005). In order to capture and evaluate the gases emanated during the firing, the specimens were placed in a quartz reactor. The gases produced were collected in Ca(OH)2 saturated solution, precipitating in the form of CaCO3, crystalline phase confirmed by X-ray diffraction spectroscopy analysis. This result indicates the generation of CO2 in the processing of these materials.
<< Back