구리 및 크롬슬러지를 함유한 고화체의 동적용출 특성 = Dynamic Leaching characteristics of the Solidified Materials Containing Copper and Chromium Sludges

다국어 초록 (Multilingual Abstract)

In this study, laboratory experiments were conducted with synthetic heavy metal sludges containing copper and chromium. It was attempted to investigate dynamic leaching characteristics of the solidified materials during 40 days. Considering three different disposal option such as landfill, reuse in construction, and ocean disposal for the solidified wastes, three different leachants, namely, acidic water, distilled water, and seawater, were used in the leaching tests.
During dynamic leaching periods, almost matrix constituents of solidified materials leached out under acidic water indicating that leaching mechanisms were controlled by matrix decompositions rather than by bulk diffusions. Under distilled water and seawater, dynamic leaching of solidified heavy metal sludges seemed to be controlled by bulk diffusions. Leachate alkalinity under seawater decreased less than leachant alkalinity, which would be caused due to carbonate influx into solidified matrices.