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김미소 ( Miso Kim ),백금지 ( Geumji Back ),변은경 ( Eun Kyung Byun ),이유림 ( You Lim Lee ),최예지 ( Yeji Choi ),장정원 ( Jungwon Chang ),홍현선 ( Hyun Seon Hong ) 한국폐기물자원순환학회(구 한국폐기물학회) 2019 한국폐기물자원순환학회 춘계학술발표논문집 Vol.2019 No.-
ITO (Indium Tin Oxide) transparent electrode of after used LCD, contains indium oxides, which is classified as an expensive rare metal. Therefore, LCD recycling is becoming an important issue in terms of solving environmental problems and securing resources. Followed by dismantling of waste LCD, for hydrometallurgical indium recovery from LCD through solvent extraction is the rudimentary stage. The determination of optimum conditions is rather essential from efficient solvent extraction process development perspective. Hence, solvent extraction efficiency of indium as function of leachant(A)/extractant(O) ratio, extractant(O)/stripping reagent(A') ratio and reaction temperature were investigated. Through our investigation, A/O and O/A' ratio varies from 1 to 8, reaction temperature varies from 25℃(RT) to 80℃. As extractant and stripping reagent, D2EHPA and HCl were used, respectively.