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首页> 外文会议>EPD congress;TMS annual meeting exhibition >SILVER RECOVERY FROM INDUSTRIAL WASTES USING AN ELECTROCHEMICAL REACTOR REOV-01
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SILVER RECOVERY FROM INDUSTRIAL WASTES USING AN ELECTROCHEMICAL REACTOR REOV-01

机译：使用电化学反应器REOV-01从工业废料中回收银

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Electrochemical studies were performed to silver recovery from industrial wastes (radiographic films) on titanium flat electrode using a filter press-type electrochemical reactor with vertical orientation (known as REOV-01), as counter electrode was used a mesh-type DSA. Voltammetric studies were employed to find the current range under which silver reduction occurs. Using chronopotentiometric studies with controlled current, homogeneous deposits were obtained on the surface of the Ti electrode, to a current of -210 mA during 120 minutes to a constant linear flow velocity of 15 Lmin-1 was achieved 97% of silver recovery from industrial wastes. Scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy studies corroborated the presence of silver on Ti flat electrode. In addition, the silver concentration in the solution after the experiments was 1 ppm below environmental requirements. This indicates the viability of a filter press-type electrochemical reactor with vertical orientation (REOV-01) for silver recovery from radiographic films.
机译：使用具有垂直方向的压滤式电化学反应器（称为REOV-01），对钛平面电极上的工业废料（射线照相胶片）中的银回收进行了电化学研究，因为反电极使用的是网状DSA。伏安法研究用于发现发生银还原的当前范围。使用计时电位控制研究电流，可在Ti电极表面上获得均匀的沉积物，在120分钟内达到-210 mA的电流，以15 Lmin-1的恒定线性流速实现了从工业废料中回收97％的银。扫描电子显微镜（SEM）和能量色散X射线光谱学研究证实了Ti扁平电极上存在银。此外，实验后溶液中的银浓度比环境要求低1 ppm。这表明用于从放射线照相胶片中回收银的具有垂直取向的压滤型电化学反应器（REOV-01）的可行性。

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