Heavy Metal’s Potential Harm for Environment of Ancient Pyrometallurgical Slag
The total content of heavy metal in solid waster is usually used to forecast heavy metal’s potential harm for environment.This work was to study the potential harm for environment of ancient pyrometallurgical slag.The heavy metal content in ancient pyrometallurgical slag is high and the average content of heavy metal (zinc plus plumbum) is up to 6.97%.But the leachable quantity of Zn,Pb,Cr and Cd are all very low.It shows that the total content of heavy metal could not represent the harm for environment. Meanwhile,leaching behavior of heavy metal in pyrometallurgical slag was discussed through extraction toxicity test in different pH. The results showed that in neutral condition,the leachable quantity of Zn,Pb,Cr and Cd is at the lowest level and their migration ability were weak.
Guojun Zhang and Jessica Xu
X. Peng et al., "Heavy Metal’s Potential Harm for Environment of Ancient Pyrometallurgical Slag", Advanced Materials Research, Vols. 160-162, pp. 130-134, 2011