| 학회 | 한국공업화학회 |
| 학술대회 | 2017년 가을 (11/08 ~ 11/10, 부산 벡스코(BEXCO)) |
| 권호 | 21권 2호 |
| 발표분야 | (한-독) 순환형 경제사회 구축을 위한 혁신적인 자원 재활용 |
| 제목 | Recovery of indium from spent etching solution containing relatively low concentration of indium. |
| 초록 | We investigated the technology for recovery of Indium metal from spent etching solution which containing relatively low concentrations of indium, by both Solvent extraction and electro-winning processes. At the first experiments, various extractants such as Cyanex-272, ALQ336, D2EHPA and PC-88A were used for the indium extraction. D2EHPA, diluted in kerosene, shown the best extraction efficiency and the best ratio between D2EHPA and Kerosene is 2:8. Also, extraction efficiency is increased by increasing A/O ratio. Extraction efficiency is about 98.6% in this case. To recover the indium sponge from after the solvent extraction process, various electro-winning experiments such as pH of electrolyte, current density, and reaction temperature were investigated. Extraction efficiency was increased as increasing by both pH value and current density, pH 0 and 1000A/m2. The reaction temperature is optimized from RT~40oC. In case of the real plant, the total recovery rate is about 96.02%. |
| 저자 | 황수현1, 박정진2 |
| 소속 | 1탑머티리얼즈, 2(주)엔코 |
| 키워드 | Indium; Spent Etching solution; Solvent Extraction; Electro-winning |
