계면활성제 거품(Foam)을 이용한 토양칼럼 내 유류 및 중금속 동시 제거 연구|RISS 상세보기

다국어 초록 (Multilingual Abstract)

Simultaneous removal of heavy metals (Cd, Pb) and diesel-fuel from a soil column was evaluated by respectively flushing with sodium dodecyl sulfate (SDS) solution, mixture of SDS and sodium iodide (SDS + NaI), and surfactant foam (SDS + NaI foam). First, this study evaluated these flushing methods to the heavy metals only-contaminated soil for removal of heavy metals from the heavy-metal only contaminated soil column. After 7 pore volume flushing of the soil column, Cd removal efficiencies from the soil were 40% by SDS solution, 50% by SDS + NaI mixture, and 60% by surfactant foam. The flushing results implied that anionic surfactant and ligand can be efficiently applied to extraction of Cd from the heavy metal contaminated soil. Furthermore, surfactant foam flushing showed an increased flushing efficiency with enhancing the contact between surfactant solution and soil. However, Pb removal efficiency by these flushing methods did not show any difference unlike those of Cd. Second, this study eventually evaluated flushing methods for simultaneous removal of heavy metals and diesel-fuel from the soil column with 7 pore volume flushing. Diesel-fuel removal efficiencies were 50% by SDS + NaI flushing and 90% by SDS + NaI foam flushing. Cd removal efficiency by the foam flushing reached to 80% which was higher than the result of the previous heavy metals onlycontaminated soil experiment. This result implied that diesel-fuel could act as a metal-solvent while it contacted to heavy metals present in the soil. This study clearly showed that surfactant foam flushing simultaneously removed heavy metals and diesel fuel from the soil column.

번역하기

참고문헌 (Reference)

1 부산시, "문현지구 토양환경 복원사업의 성공적 성과사례-문현금융단지 오염부지 정화사업중심 연구보고서" 2003

2 김수삼, "납으로 오염된 철성분 함유토의 동전기 정화 특성에 세척제가 미치는 영향" 한국지하수토양환경학회 9 (9): 54-62, 2004

3 이민희, "계면활성제 원위치 토양세정법을 이용한 유류 오염지역 토양？지하수 정화 실증시험" 한국지하수토양환경학회 7 (7): 77-86, 2002

4 USEPA, "Treatment Technologies for Site Cleanup: Annual Status Report" Office of Solid Waste and Emergency Response 2001

5 송지현, "Toluene의 생물학적 분해능 향상을 위한 계면활성제의 선정" 한국지하수토양환경학회 10 (10): 26-32, 2005

6 Chu, W., "The mechanism of the surfactant-aided soil washing system for hydrophobic and partial hydrophobic organics" 307 : 83-92, 2003

7 Huh, D.G., "The effect of microscopic heterogeneity on CO2 foam mobility: part 1-mechanistic study" 41 (41): 872-879, 1989

8 St-Pierre, C., "TCE recovery mechanisms using micellar and alcohol solutions: phase diagrams and sand column experiments" 71 : 155-192, 2004

9 Mulligan, C.N., "Surfactantenhanced remediation of contaminated soil: a review" 60 : 371-380, 2001

10 Wang, S., "Rhamnolipid Foam enhanced remediation of Cadmium and Nickel contaminated soil" 157 : 315-330, 2004