頁籤選單縮合
題名 | Characterization of Halophosphate Phosphor Powders Recovered from the Spent Fluorescent Lamps |
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作者姓名(外文) | Chang, Tien-chin; Wang, Sea-fue; You, Sheng-jie; Cheng, Akela; | 書刊名 | Journal of Environmental Engineering and Management |
卷期 | 17:6 2007.11[民96.11] |
頁次 | 頁435-439 |
分類號 | 445.545 |
關鍵詞 | Halophosphate; Recycling; Fluorescent lamps; Phosphor powder; Thermal desorption; |
語文 | 英文(English) |
英文摘要 | This paper investigated the characteristics of phosphor powders recovered from the spent fluorescent lamps. The results from inductively coupled plasma and X-ray diffraction analysis indicate that the halophosphate phosphor contains contaminations from rare-earth phosphor as well as the glass tube. After the thermal desorption/distillation process, the mercury was effectively removed from the phosphor powder. Though they have similar particle size distribution and morphology, the recovered phosphor (6.5 μm) has a smaller particle size than that of fresh phosphor (7.7 μm), as a result of erosion during the recycling process. Since the luminescence properties of the recovered samples deviated from those of the fresh sample, it would alter the luminance and chromaticity of the lamps. The recovered phosphor can be mixed with the fresh phosphor and used in the fluorescent lamps again. |
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