- 學位論文
以電解精煉法自廢污泥回收鎵金屬之研究
Recovery of Gallium from Waste Solid by Electrowinning
摘要
在鹼性環境下將鎵污泥溶解，以電解沉積法從溶液中提取鎵金屬，並探討其電解效率和金屬品質，其電解方程式如下： H2GaO3- + H2O + 3e- → Ga(s) + 4OH- 首先利用X光螢光分析儀、原子吸收光譜儀，分析鎵污泥的成分組成，本實驗探討了不同的陽極與陰極組合、電流大小、初始濃度、電流密度、二電解對效率與金屬品質的影響，並利用原子吸收光譜儀、感應耦合電漿原子發射光譜分析儀，觀察電解程序的效率與金屬的品質。 經由實驗結果可得知鎵污泥含有鎵、鐵、鎳、鈷、鋅、銅、鉻這些元素，利用鈦鍍氧化銥陽極與不銹鋼316陰極、定電流3 A、極距1 cm、鎵離子初始濃度15000 ppm、電流密度0.1 A/cm2，可回收鎵金屬。
並列摘要
This waste solid is dissolve by base solution, recovery of Gallium from base solution by electrowinning, and discuss its electrolysis efficiency and metal quality﹐ The electrowinning reaction are that： H2GaO3- + H2O + 3e- → Ga(s) + 4OH- We analysis the elemental composition by using X-ray fluorescence, Atomic absorption spectrophotometer, In this study, we have variables. Such as the different anode cathode combinations, electric current, initial concentration, current density, We observe the electrolysis efficiency, metal quality of the analysis by Atomic absorption spectrophotometer and Inductively coupled plasma optical emission spectrometry. According to the experiments, Waste solid containing Ga, Fe, Ni, Co, Zn, Cu, Cr, We selected Ti/IrO2 anode, stainless steel cathode, current 3 A, electrode distance 1 cm, current density 0.1 A/cm2, initial concentration 15000 ppm to recover metal.
參考文獻
延伸閱讀
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