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IrO_2-RuO_2/Ti电极处理含氰含银电镀废水
Authors
李清彪
洪金庆
+3 more
王海涛
王远鹏
苏远波
Publication date
25 December 2009
Publisher
Abstract
采用热氧化分解法制备了IrO2-RuO2/Ti电极,用X射线衍射(XRD)和扫描电镜(SEM)以及X射线能谱仪(EDS)对其进行表征,并考察其对脉冲电解含氰含银电镀废水中银离子的还原和氰化物分解的影响。结果表明:用热氧化分解法制备的IrO2-RuO2/Ti电极表面具有"泥裂"现象,其主要成分为IrO2,RuO2和TiO2。以IrO2-RuO2/Ti为阳极,不锈钢圆筒为阴极,在脉冲电压0.5 V,脉冲频率1 200 Hz,占空比50%,曝气量1.0 L/min,电解液循环流速100 mL/min和pH值10~11的条件下,常温电解4.0 h,发现IrO2-RuO2/Ti电极性能优于石墨电极、PbO2/Ti电极和不锈钢电极,在其作用下,废水中银离子的回收率达到99.66%,氰分解率达到91.63%
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Last time updated on 16/06/2016