Application of Waste Resources for the Stabilization of Heavy Metals (Pb, Cu) in Firing Range Soils
폐자원을 이용한 사격장 토양내 중금속(Pb, Cu) 안정화 처리

Keun-Young Lee, Deok-Hyun Moon, Kyoung-Woong Kim, Kyung-Hoon Cheong, Tae-Sung Kim, Jee-Hyeong Khim, Kyoung-Ran Moon, Su-Bin Choi
2011 Journal of Korean Society of Environmental Engineers  
In this study, a heavy metal stabilization treatment using waste resource stabilizing agents was utilized on army firing range soil contaminated with Pb and Cu. Both calcined oyster shells (COS; 5% w/w) and waste cow bone (WCB; 3% w/w) were applied for a wet-curing duration of 28 days. Following the stabilization treatment, the process efficiency was evaluated by various extraction methods for Pb and Cu. Neutral and weak acid extraction methods, such as water soluble extraction and SPLP, did
more » ... on and SPLP, did not show positive results for heavy metal stabilization with very low leachability. On the other hand, TCLP and 0.1 N HCl extraction showed that the stabilizing agents significantly reduced the amount of the heavy metals leached from the soil, which strongly supports that the treatment efficiency is positively evaluated in acidic leaching conditions. Specifically, in the 0.1 N HCl extraction, the reduction efficiencies of Pb and Cu leaching were 99.9% and 83.9%, respectively. From the sequential extraction results, a difference between Pb and Cu stabilization was observed, which supports that Pb stabilization is more effective due to the formation of insoluble Pb complexes. This study demonstrates that the application of waste resources for the stabilization of heavy metals is feasible.
doi:10.4491/ksee.2011.33.2.071 fatcat:ochomf6tavdvjj2bxzvoub6upi