Hydrometallurgical Recovery of Copper from Computer-Printed Circuit Boards
Modern electronic devices contain up to 60 different metals, leading to a growing interest in exploring secondary sources, particularly electronic waste (e-waste), to address potential shortages. This study focused on extracting copper (Cu) and gold (Au) from three different sources of computer-prin...
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EDP Sciences
2024-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2024/129/e3sconf_staclim2024_04006.pdf |
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| author | Abdol Jani Wan Nur Fazlina Abdul Rani Noor Hidayu Mohamad Nor Fadilah Sayed Jamaludin Sharifah Iziuna |
| author_facet | Abdol Jani Wan Nur Fazlina Abdul Rani Noor Hidayu Mohamad Nor Fadilah Sayed Jamaludin Sharifah Iziuna |
| author_sort | Abdol Jani Wan Nur Fazlina |
| collection | DOAJ |
| description | Modern electronic devices contain up to 60 different metals, leading to a growing interest in exploring secondary sources, particularly electronic waste (e-waste), to address potential shortages. This study focused on extracting copper (Cu) and gold (Au) from three different sources of computer-printed circuit boards (PCBs): board, USB jack, and capacitor. Aqua regia, a mixture of 68% concentrated nitric acid and 37% concentrated hydrochloric acid in a 1:3 ratio (HNO3=1:3), was used as a leachant under various conditions, including different types of e-waste components, leaching times, and surface areas. Acidic leaching with a 1% (w/v) e-waste pulp density resulted in higher Cu extraction from PCB board waste compared to USB jack and capacitor waste. The optimal recovery of Cu achieved was 2207 mg/L after 20 minutes of leaching, using a particle size of 10 mm, at 100°C, 150 rpm, and a pulp density of 1% (w/v). The dissolution of Au was only traceable in the capacitor and USB jack with significantly lower quantities of 0.4 and 3.2 mg/L, respectively. Additionally, the electrowinning process managed to recover Cu with just 31.6% purity after one hour of electrolysis. In conclusion, this study demonstrates the feasibility of recovering valuable metals from e-waste through acid leaching, without the need for additional chemical treatments. |
| format | Article |
| id | doaj-art-e768882190f44ed282fce601c5b55328 |
| institution | Kabale University |
| issn | 2267-1242 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj-art-e768882190f44ed282fce601c5b553282025-01-16T11:22:27ZengEDP SciencesE3S Web of Conferences2267-12422024-01-015990400610.1051/e3sconf/202459904006e3sconf_staclim2024_04006Hydrometallurgical Recovery of Copper from Computer-Printed Circuit BoardsAbdol Jani Wan Nur Fazlina0Abdul Rani Noor Hidayu1Mohamad Nor Fadilah2Sayed Jamaludin Sharifah Iziuna3School of Chemical Engineering, College of Engineering, Universiti Teknologi MARA Johor Branch, Pasir Gudang CampusSchool of Chemical Engineering, College of Engineering, Universiti Teknologi MARA Johor Branch, Pasir Gudang CampusSchool of Chemical Engineering, College of Engineering, Universiti Teknologi MARA Johor Branch, Pasir Gudang CampusSchool of Chemical Engineering, College of Engineering, Universiti Teknologi MARA Johor Branch, Pasir Gudang CampusModern electronic devices contain up to 60 different metals, leading to a growing interest in exploring secondary sources, particularly electronic waste (e-waste), to address potential shortages. This study focused on extracting copper (Cu) and gold (Au) from three different sources of computer-printed circuit boards (PCBs): board, USB jack, and capacitor. Aqua regia, a mixture of 68% concentrated nitric acid and 37% concentrated hydrochloric acid in a 1:3 ratio (HNO3=1:3), was used as a leachant under various conditions, including different types of e-waste components, leaching times, and surface areas. Acidic leaching with a 1% (w/v) e-waste pulp density resulted in higher Cu extraction from PCB board waste compared to USB jack and capacitor waste. The optimal recovery of Cu achieved was 2207 mg/L after 20 minutes of leaching, using a particle size of 10 mm, at 100°C, 150 rpm, and a pulp density of 1% (w/v). The dissolution of Au was only traceable in the capacitor and USB jack with significantly lower quantities of 0.4 and 3.2 mg/L, respectively. Additionally, the electrowinning process managed to recover Cu with just 31.6% purity after one hour of electrolysis. In conclusion, this study demonstrates the feasibility of recovering valuable metals from e-waste through acid leaching, without the need for additional chemical treatments.https://www.e3s-conferences.org/articles/e3sconf/pdf/2024/129/e3sconf_staclim2024_04006.pdf |
| spellingShingle | Abdol Jani Wan Nur Fazlina Abdul Rani Noor Hidayu Mohamad Nor Fadilah Sayed Jamaludin Sharifah Iziuna Hydrometallurgical Recovery of Copper from Computer-Printed Circuit Boards E3S Web of Conferences |
| title | Hydrometallurgical Recovery of Copper from Computer-Printed Circuit Boards |
| title_full | Hydrometallurgical Recovery of Copper from Computer-Printed Circuit Boards |
| title_fullStr | Hydrometallurgical Recovery of Copper from Computer-Printed Circuit Boards |
| title_full_unstemmed | Hydrometallurgical Recovery of Copper from Computer-Printed Circuit Boards |
| title_short | Hydrometallurgical Recovery of Copper from Computer-Printed Circuit Boards |
| title_sort | hydrometallurgical recovery of copper from computer printed circuit boards |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2024/129/e3sconf_staclim2024_04006.pdf |
| work_keys_str_mv | AT abdoljaniwannurfazlina hydrometallurgicalrecoveryofcopperfromcomputerprintedcircuitboards AT abdulraninoorhidayu hydrometallurgicalrecoveryofcopperfromcomputerprintedcircuitboards AT mohamadnorfadilah hydrometallurgicalrecoveryofcopperfromcomputerprintedcircuitboards AT sayedjamaludinsharifahiziuna hydrometallurgicalrecoveryofcopperfromcomputerprintedcircuitboards |