화학약액 추출법에 의한 오염된 흙의 정화 처리법 연구

Remediation of Contaminated Soil by Aqueous Solution Extraction

  • 박준범 (정회원, 중앙대학교 건설대학 토목공학과)
  • 발행 : 1995.12.01

초록

현장에서 화학약액을 주입하여 탈착을 촉진시킴으로 유기화합물로 오염된 흙을 정화처리하는 방법을 실험실에서 모델링해 보았다. 본 실험에서 UH40이라고 명명된 흙에 페놀(phenol), 애닐린(aniline), 퀴놀린(quinoline), 및 2-낼톨(2-napthol) 등의 유기유해물질을 오염시킨 후, 여러 종류의 화학약액을 사용하여 이 유기물질을 탈착/제거시켜 보았다. 오염물질제거 용액으로는 물, 과산화수소, 산성 및 염기성용액, 그리고 계면활성제를 이용하였다. 현장의 흙의 응력 상태와 약액주입 상황은 삼축압축기를 응용한 투수기(permeameter)로 오염된 흙에 구속음력을 가해주고 등수경사를 유발시켜 약액이 흐르게 함으로써 모델링이 가능하였다. 폐놀과 애닐린은 수산화나트릅과 중성세제에 의해 각각 효과적으로 탈착되었고, 음이온성 세제는 퀴놀린과 2-낼톨의 정화에 효과적이었다.

Laboratory tests were performed on modeling of in situ remediation of contaminated soils by aqueous solution extraction, thus investigating the feasibility of in situ treatments of soil to promote desorption of organic hazardous wastes. The investigation was conducted using phenol, aniline, quinoline, and 2-napthol adsorbed onto a UH40 soil, and various aqueous solutions were used to desorb, or otherwise remove, these organic contaminants. Decontaminants consisted of deionized water as a reference, hydrogen peroxide, acidy, bases, and surfactants. In situ conditions were modeled in the laboratory by permeating potential extracting liquids through reconstituted, contaminated soil specimens under controlled hydraulic gradients and stress condition through flexible wall permeameter tests. Sodium hydroxide desorbed phenol effectively. Aniline was effectively descorbed by nonionic surfactant. Anionic surfactant remediated quinoline and 2-napthol.

키워드

참고문헌

  1. 폐기물 매립장의 차폐재와 침출성분과의 상호작용 분석 v.9 no.3 정하익;장연수
  2. Proceedings of the 4th National Symposium and Exposition on Aquifer Restoration and Ground Water Monitoring Assessment of Purge Well Effectiveness for Aquifer Decontamination, National Water Well Associaiton Whiffin,R.B.;Bahr,J.M.
  3. Journal of Environmental Engineering Division v.117 no.1 Enhanced In-Situ Biodegradation and Aquifer Permeability Reduction Taylor,S.W.;Jaffe,P.R.
  4. Enhancing Microbial Degradation of Underground Gasoline by Increasing Available Oxygen Texas Research Institute
  5. Pollution Technology Review no.132 Contaminated Surface Soils In-place Treatment Techniques Sims,R.C.;Sorensen,D.;Sims,J.;McLean,J.;Mahmood,R.;Dupont,R.;Jurinak,J.;Wagner,K.
  6. Hazardous Wastes and Hazardous Materials v.8 no.3 Comparison of Extraction Fluids Used With Comtaminated Soils Erickson,D.C.;White,E.;Loehr,R.C.
  7. Fundamentals of Soil Behavior v.3 Mitchell,J.K.
  8. MS thesis Development and Evaluation of an Apparatus to Test Contaminated Soil for the Feasibility of In-Situ Treatment to Promote Desorption of Hazardous Waste Lazaridou,M.E.
  9. Chemical Oxidation of Chlorine by Hydrogen peroxide in the Presence of Sand v.28 no.3 Ravikumar,J.X.;Gurol,M.D.
  10. Environmental Progress v.8 no.1 Two Strategies of PCB Soil Remediation : Biodegradation and Surfactant Extraction McDermott,J.B.;Unterman,R.;Brennan,M.J.;Brooks,R.E.;Modley,D.P.;Schwartz,C.C.;Dietrich,D.K.
  11. Hydrocarbon Contaminated Soils 1 Mechanisms for the Removal of Residual Hydrocarbons from Soils by Water, Solvent, and Surfactant Flushing Rixey,W.G.;Johnson,P.C.;Deeley,G.M.;Byers,D.L.
  12. Environmental Science & Technology v.27 no.12 Surfactant-Enhanced Solubilization of Residual Dodecane in Soil Columns : 1. Experimental Investigation Pennell,K.D.;Abrida,L.M.;Weber,W.J.Jr.
  13. CRC Handbook of Chemistry and Physics (74th ed.) Lide,D.R.
  14. Handbook of Environmental Data on Organic Chemicals Verschueren,K.
  15. Neodol Cummunications Neodol : Product Guide for Alcohols, Ethoxylates and Ethoxysulfates Shell Chemical Company
  16. Ph. D. Dissertation Laboratory Model of Remediation of Contaminated Soils by Aqueous Solution Extraction Park,J.B.