Asidik çözeltilerden sıvı membranlarla galyumun ayrılması ve zenginleştirilmesi
Separation and concentration of gallium from acidic leach solutions by emulsion type liquid membranes
- Tez No: 129125
- Danışmanlar: PROF.DR. OSMAN TUTKUN
- Tez Türü: Doktora
- Konular: Kimya, Chemistry
- Anahtar Kelimeler: Galyum, döner filtre keki (DFK), asidik liç çözeltisi, emülsiyon tipi sıvı membran (ETSM), galyumun ayrılması ve zenginleştirilmesi, ekstraksiyon, sıyırma, tri-n-butil fosfat (TBP), tri-n-oktil fosfın oksit (TOPO), emülsiyon parçalama. Galyum, genellikle
- Yıl: 2002
- Dil: Türkçe
- Üniversite: Sakarya Üniversitesi
- Enstitü: Fen Bilimleri Enstitüsü
- Ana Bilim Dalı: Kimya Ana Bilim Dalı
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 186
Özet
ÖZET
Özet (Çeviri)
SEPARATION AND CONCENTRATION OF GALLIUM FROM ACIDIC LEACH SOLUTIONS BY EMULSION TYPE LIQUID MEMBRANES SUMMARY Key words; Gallium, rotary filter cake, acidic leach solution, emulsion type liquid membrane, separation and concentration of gallium, extraction, stripping, tri-n-butyl phosphate (TBP), tri-n-octyl phosphine oxide (TOPO), demulsification. Gallium, a precious metal, is often found as a trace element in zinc and aluminium ores. Gallium compounds are used in photon emission diodes ( in general, display systems in electronics), laser diodes, light detectors and photoelectric materials, semiconductors, fibber optic materials, calculators and pieces of some electronic instruments such as radio, television etc. Recovery of precious metals having much less concentration in waste solutions is important, since requirements for gallium and other precious metals are continually increasing and also ores with a high concentrations of precious metals are in decrease, recovery of precious metals in low concentrations in solid or liquid waste is becoming significant. Therefore new methods that contribute to the recovery and separation of precious metalş from dilute aqueous solutions have received much attention in recent years. Liquid membrane is a significant separation process which has a potential application for selective recovery of such precious metals. In this study, a selective recovery of gallium from the acidic leach solutions, obtained from a rotary filter cake, CINK.UR Co. (a Zinc-lead Metal Industry Co.), in Kayseri, Türkiye, was investigated to form a model of acidic leach solutions containing various metal ions (Ga3+, Fe2+, Co2+, Ni2+, Zn2+, Cd2+, Pb2+, Cu2+ and Al3+). Also, the parameters affecting liquid membrane process were examined and the optimum conditions were determined. In conclusion, it was shown that gallium from the acidic leach solutions having low gallium concentrations can be recovered selectively by liquid membrane process using TOPO or TBP extractants. XXIV
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