| Title |
The Study on Heavy Metal Fixation by Sulfate Reduction in Landfill Site |
| Keywords |
Incineration Ash; Heavy Metals; Sulfate Reduction; Leaching Rate |
| Abstract |
Enhancement of incineration ashes`s landfill is expected near the future as results of increase of their emissions. Heavy metal contamination is a serious problem because incineration of their emissions. Heavy metal contamination is a serious problem because incineration ashes contain a significant amount of harmful heavy metals. In our study, the fixation of S^2-to heavy metal (ie, Metal Sulfide)in the landfill was examinated to remove the heavy metal using sulfate reduction. Other heavy metals such as Pb, Cu, Zn and Al also showed somewhat trend of heavy metal fixation. Leaching amount and leaching rate of heavy metals were lower in the incineration ashes column than those in sludge column. Out of reactor R1~R5, the sulfate added reactor R3~R5 showed heavy metal leaching rate of > 50% in Pb and Cu. In addition, reactor R6~R10 showed heavy metal leaching rate of 10^-1~10^-2% in most of heavy metals. |