| Abstract |
The effects of heavy metals, Pb, Cd, Zn, eliminsated utilized acidic extraction together with ultrasound sonication treatment (UST) from incinerated bottom ash were studied. The principle parameters considered in this study were the liquid to solid ratio, the concentrations and varieties of acidic extraction solutions, reaction time and strength of sonication. Higher eliminsation efficiency could be reached for the process of acidic extraction along with UST than that of only acidic extraction or UST. The effects of liquid to solid ratio (L/S) on metals (276.2 mg-Pb/L) eliminsated were discovered. At L/S = 10 the capacities for extraction of Pb, Cd, Zn, were maximum at the strength of 0.5M sulfuric acid or mixed acidic solution used in acidic extraction process. It was demonstrated that the amount of extraction of Cd at the strength of 0.5M of sulfuric acid solution and mixed acidic solution were 151.5 mg/L and 170.1 mg/L. The extraction rates were significantly higher at strength of 5.0M and 10.0M of the acidic solutions than at the strength of 0.5M and 1.0M. The pH of residual solution after treatment of UST was discovered to be tended to neutrality or weak base. |
