| Full text | |
| Author(s): |
de Andrade, Lidiane Maria
;
Alvarez Rosario, Carlos Gonzalo
;
de Carvalho, Mariana Alves
;
Romano Espinosa, Denise Crocce
;
Soares Tenorio, Jorge Alberto
;
Minerals, Met & Mat Soc
Total Authors: 6
|
| Document type: | Journal article |
| Source: | TMS 2019 148TH ANNUAL MEETING & EXHIBITION SUPPLEMENTAL PROCEEDINGS; v. N/A, p. 8-pg., 2019-01-01. |
| Abstract | |
For this study, 21 smartphones touchscreen manufactured since 2010 were selected where disassembly and the printed circuit boards (PCIs) were removed. The PCIs were comminuted and characterized by magnetic separation in which the samples were fractionated in magnetic (M), non-magnetic (NM) and without magnetic separation (MIX). The chemical analyses by ICP-OES of the digested fractions showed the presence of 1950, 857 and 1435 g/L copper for the fractions NM, M and MIX, respectively. The bioleaching tests were conducted with the A. ferrooxidans bacteria and the fraction NM and MIX. ICP-OES analyzes the metals present in the liquor before and after the bioleaching process and the controls (without the bacteria) showed that the presence of the bacteria increased the copper extraction in 8 and 5%, which means from 6854 to 7387 mg/L and from 6309 to 6606 mg/L for the NM and the MIX fraction, respectively. (AU) | |
| FAPESP's process: | 12/51871-9 - Study Center for Technology in Waste Solid Treatment and Recycling - SCTWSTR |
| Grantee: | Jorge Alberto Soares Tenório |
| Support Opportunities: | Research Projects - Thematic Grants |