AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
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STUDIA CHEMIA - Ediţia nr.3 din 2012 | |||||||
Articol: |
METALS LEACHING FROM WASTE PRINTED CIRCUIT BOARDS. PART I: EFFICIENCY AND SELECTIVITY IN FeCl3 AND CuCl2 ACIDIC SOLUTIONS. Autori: FLORICA IMRE-LUCACI, PETRU ILEA. |
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Rezumat: The leaching of metals from waste printed circuit boards (WPCBs) was investigated in different leaching systems using FeCl3 or CuCl2 as oxidants. The influence of solution speciation on the redox equilibria and process performances was studied in unstirred 1 M HCl solutions. The efficiency of these systems was compared on the basis of the extent of leaching of individual metals and total metal dissolution. It has been found that in chloride medium the leaching efficiency reaches a plateau at 0.4 M CuCl2 concentration, while for FeCl3 it is continuously increasing even at concentrations four times higher. Keywords: waste printed circuit boards, leaching systems, FeCl3 and CuCl2 |
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