|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Materials Processing Fundamentals
||Leaching Recovery of Silver from Used Radiographic Films
||Abraham Adeleke, Adebayo Adeniyi, B.O Ibitoye, K.E. Oluwabunmi
|On-Site Speaker (Planned)
A chemical processing scheme was adopted for the recycling of silver from used photographic films best known as radiographic films. The rinsed and cleansed films were sized to 2 by 2 by 2 centimetres cube before being dried in an oven at 20oC for 30 minutes. Silver oxide was precipitated with potassium hydroxide at varying concentrations and the silver oxide (Ag2O) precipitate obtained thermally decomposed to silver at 450°C. The silver obtained by thermal decomposition was about 93.1% pure. The test carried out on the filtrate gave the silver contents as 648.266, 984.855 and 1017.816 mg/L for concentrations of 0.02, 0.5 and 1.0 M KOH solutions, respectively. The study showed that radiographic film is a possible secondary source of the scarce silver metal.
||Planned: None Selected