CAJ | 학술논문

采用硫酸作为酸浸出剂，考察了浸出时间、酸浓度和浸出温度对电镀污泥中重金属Zn、Cr浸出效果的影响，并运用Avrami方程拟合Zn、Cr的浸出动力学。结果表明：硫酸浸出Zn、Cr的最适浸出时间、酸浓度、温度均为4h、3mol/L、20℃。Zn、Cr的浸出过程均可用Avrami方程进行很好的拟合，其浸出反应的表观活化能分别为3.58和3.06kJ/mol，即两者的浸出过程均是扩散控制的，为工业规模的硫酸浸出电镀污泥中Zn、Cr提供理论参考。
채용류산작위산침출제，고찰료침출시간、산농도화침출온도대전도오니중중금속Zn、Cr침출효과적영향，병운용Avrami방정의합Zn、Cr적침출동역학。결과표명：류산침출Zn、Cr적최괄침출시간、산농도、온도균위4h、3mol/L、20℃。Zn、Cr적침출과정균가용Avrami방정진행흔호적의합，기침출반응적표관활화능분별위3.58화3.06kJ/mol，즉량자적침출과정균시확산공제적，위공업규모적류산침출전도오니중Zn、Cr제공이론삼고。
This article,using sulphuric acid as acid leaching agent,investigates the effects of leaching time, acid concentration and leaching temperature on the leaching effect of zinc and chromium which are heavy metals from electroplating sludge,and uses Avrami equation to fit the leaching kinetics of zinc and chromi?um. The results showed that:both the optimum leaching time,acid concentration and temperature of sulph?uric acid leaching zinc and chromium are 4h,3mol/L and 20°C. Avrami equation could be used to fit both the leaching process of zinc and chromium very well,and the apparent activation energy of the leaching re?action are 3.58 and 3.06kJ/mol respectively,that is,both the leaching process are controlled by diffusion, which provides the theory reference for the sulfuric acid leaching zinc and chromium from electroplating sludge on an industrial scale.