Transformação de lodo galvânico em pigmentos inorgânico

Abstract

GS is a potentially hazardous chemical waste due to its containing has high levels of PMT. GS causes huge environmental damages around the world. However, the GS three pillars products had proven its sustainabilities (socially fair, economically viable and environmentally correct), GS's IP is an effective alternative to GS’s reusing in many matters such as pottery, inks, etc.. Some GS’s mixtures generated in Manaus Industrial Park, and Kaolinite extracted by Oxisol at the Central Amazonia region was tested at different temperatures to obtain a commercial IP. The proportions of 1:0, 0:1, 1:1, 1:2 and 2:1 GS and Kaolinite was shredded in ball mill and calcined at the following temperatures 650, 900 and 1200 oC. The calcined mixtures were characterized using XRD, XRF, TGA, DTA/ DSC, SEM, colorimetric test, leaching test. The results shown the Inorganic Pigment (IP) synthesized at 1200°C encompasses a wide range of following matters such: Trevorite, Mullite, Calcite and Hematite depending on the proportion of Kaolinite and GS.