CAJ | 학술논문

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1200 Hz,占空比50%,曝气量1.0Lmin,电解液循环流速100mL/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%.
채용열양화분해법제비료IrO2-RuO2/Ti전겁,용X사선연사(xRD)화소묘전경(SEM)이급X사선능보의(EDS)대기진행표정,병고찰기대맥충전해함청함은전도폐수중은리자적환원화청화물분해적영향.결과표명:용열양화분해법제비적IrO2-RuO2/Ti전겁표면구유"니렬"현상,기주요성분위IrO2,RuO2화TiO2.이IrO2-RuO2/Ti위양겁,불수강원통위음겁,재맥충전압0.5 V,맥충빈솔1200 Hz,점공비50%,폭기량1.0Lmin,전해액순배류속100mL/min화pH치10～11적조건하,상온전해4.0 h,발현IrO2-RuO2/Ti전겁성능우우석묵전겁、PbO2/Ti전겁화불수강전겁,재기작용하,폐수중은리자적회수솔체도99.66%,청분해솔체도91.63%.
The IrO2-RuO2/Ti electrode was preparaed by thermal oxidation decomposition method and characterized by means of X-ray diffraction spectrum (XRD), scanning electronic microscope (SEM) and X-ray energy dispersive spectrum (EDS). The effects of IrO2-RuO2/Ti on silver ion reclamation and cyanide decomposition from electroplating wastewater using the novel pulse-electrolyzed technique were investigated. The results showed that the metallic oxide layers of IrO2-RuO2/Ti electrode, prepared with thermal oxidization method, had "putty crack" phenomenon. IrO2, RuO2 and TiO2 were the principal components of the layers. The results also showed that the performance of IrO2-RuO2/Ti electrode was better than that of graphite electrode, PbO2/Ti electrode and stainless steel electrode. The silver reclamation and cyanide decomposition reached 99.66% and 91.63%,respectively, after electrolysis 4.0 h under the conditions of IrO2-RuO2/Ti as anode, stainless steel cylinder as cathode, pulse voltage 0.5 V, pulse frequency 200 Hz, dutycycle 50%, aeration rate 1.0 L/min, circulation velocity of electrolyte 100 mL/min, pH10-11 and room temperature.