ANALISA CYCLIC VOLTAMMETRY GUNA RECOVERY TEMBAGA PADA LIMBAH ELEKTRONIK PRINTED CIRCUIT BOARDS (PCB) MENGGUNAKAN RELINE

Abstract

Cyclic voltammetry analysis for copper recovery on printed circuit boards (PCB) electronic waste using Reline (ChCl: Thiourea) has been successfully carried out. The use of Reline solution (ChCl: Thiourea) is included in the deep eutectic solvent (DES) as an alternative for the use of solvents that are cheap, efficient, and safe for the environment. The solvent is formed from a donor (HBD) and acceptor (HBA) bonds with a ratio of 1 mol: 2 mol to water which will produce a eutectic mixture. The results of XRF (X-ray fluorescence spectrometry) on the printed circuit board (PCB) after comminution obtained the highest element, namely copper at 17.91%, and became the object of research observation. All experiments on the cyclic voltammetry test produced irreversible type voltammograms. The addition of more than 50% water in the deep eutectic solvent (DES) affects the peaks of oxidation and reduction, and in theory, the current efficiency is 99.83% and the optimum test results occur at a temperature of 60 oC for testing the Reline type deep eutectic solvent (DES) solution (ChCl: Thiourea) with a potential of Ep = 4.2975 volts and Ep/2 = 4.2971 volts. SEM-EDX analysis results on a platinum plate (Pt) from deep eutectic solvent (DES) ChCl: Thiourea (Reline) capable of spontaneously depositing copper minerals onto the surface of the platinum plate (Pt). Keywords: Reline, Cyclic Voltammetry, Solvent