Per: andressa aparecida piovezan (UFRGS), Priscila Silva Silveira Camargo (UFRGS), Pedro Tietbohl Antoniuk (UFRGS), Pedro Jorge Walburga Keglevich de Buzin (UFRGS), Weslei Monteiro Ambrós (UFRGS), Rejane maria candiota tubino (ufrgs)
Abstract:
The main objective of this article is to present some of the already advanced stages of a research project on secondary mining of printed circuit boards from electronic voting machines. Electronic voting machines discharge in Brazil, by defects or obsolescence, generate wastes that need proper management, among them, circuit printer boards. This work presents the steps of manual disassembly, separation, and quantification of the printed circuit boards (PCB) existing in the voter and board member station terminal. Preliminary results of the structural and elemental characterization of the comminuted material of the PCB, obtained by the techniques of Scanning Electron Microscopy (SEM) and Energy Dispersive Sprectroscopy (EDS) are also presented. After the captures performed by SEM, the analysis by EDS detected concentrations of Fe, Cu, Ni, Al, Ag, Ag, Sn, Si, Ti, Cl, Mn, Ca, Zn, Mg, S e Pb. Next steps of this research, the study material will be submitted to analysis by X-ray Fluorescence (FRX) and Optical Emission Spectrometry with Inductively Coupled Plasma (ICP-OES) techniques, with the objective of comparing and validating the results already found.