A novel, simple, fast, cheap and pollution free method for utilizing waste X-ray film for silver recovery using sodium hydroxide and sodium sulfide by the stripping and precipitation processes, respectively has been reported. The yield of silver by this process is 1.07% w/w at a stripping temperature of 70.88°C, 10.97 min and NaOH concentration of 1.5M. The composition of recovered silver has been determined by XRF and the results are compared with existing literature for the purity of silver. The study warrants the application of NaOH and Na₂S to recover silver from used X-ray photographic film.

中文翻译：

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从废X射线摄影胶片中回收银的工艺优化

已经报道了一种新颖，简单，快速，便宜且无污染的方法，该方法利用废X射线胶片分别通过汽提和沉淀工艺利用氢氧化钠和硫化钠回收银。通过该方法，在70.88℃的汽提温度，10.97分钟和1.5M的NaOH浓度下，银的产率为1.07％w / w。回收的银的组成已通过XRF确定，并将结果与​​现有文献的银纯度进行了比较。该研究保证了使用NaOH和Na ₂ S从用过的X射线摄影胶片中回收银。