- Volume 12 Issue 7
This study was conducted to reuse the rice straw ash as washing agent for oil contaminated soils. The results are summarized as follows. The physical characteristics of rice straw before and after burning were as follows ; In case of burning rice straw 1g, the rice straw ash was generated 0.14g and pH was changed neutrality into alkali(pH 10.9) and specific surface area was increased to five times and particle distribution was corresponded to fine silt.(under 0.05mm) The physical characteristics of rice straw ash were Carbon 10.9%, Hydrogen 1.5%, Oxygen 23.4%, Nitrogen 5.2%, Sulfate 1.2% and chemical characteristics were Si 189.2ppm, Ca 10.2ppm, Mg 4.7ppm. Oil cleanup ratio by pH variation were about 40∼50% of initial concentration of oil by pH 10∼11. As the result of cleanup comparative experiment, the rice straw ash was about 20∼30%, the tritonX-100 about 40∼50% of washing efficiency, and then in the future it will be possibility of substitute washing agent.
- 환경부, 1998, 오염토양 복원기술 및 제도발전에 관한연구용역, 2차년도최종보고서, 16-17pp.
- U.S. EPA, 1991, In-situ Soil Vapor Extraction Treatment, Engineering Bulletin, RREL, Cincinnati, OH,EPA/540/2-91/006, 35-41pp.
- U.S. EPA, 1993, Augmented in-situ Subsurface Bioremediation Process, Bio-Rem, Inc., EPA RREL, Demonstration Bulletin, EPA/540/ MR- 93/527, 23-28pp.
- Sturges, S.G., Jr. P. McBeth, Jr. R.C. Pratt, 1992, Pergormance of Soil Flushing and Groundwater Extraction at the United Chro me Superfund Site, Journal of Hazardous Materials, El Savoir Pub., B.V., Amsterdam, 29, 59-78. https://doi.org/10.1016/0304-3894(91)87074-C
- 국립환경연구원, 1997, 오염토양복원기술 및 제도발전에 관한 연구, 1, 2.
- Edward, D.A., R.G. Luthy and Z. Liu, 1991, Solubilization of Polycyclic Aromatic Hydrocarbons in Micellar Nonionic Surfactant Solution, ES＆T, 25, 127-133. https://doi.org/10.1021/es00013a014
- Schwarzenbach, R.P., 1993, Gschwend, P.M. and Imboden, D.M., Environmental Organic Chemistry, John Wiley & Sons, Inc. NY. 35-41pp.
- 윤현철, 1999, 계면활성제 탈착촉진법을 이용한 유기화합물로 오염된 토양의 정화, 서울대학교 토목공학과 석사학위논문, 42-49pp.
- 환경부, 1995, 오염토양 정화기술 개발, 221- 222pp.
- 정승미, 1997, 경유로 오염된 토양의 세척정화에 관한 연구, 서울시립대학교 환경공학과 석사학위논문, 56-60pp.
- 석유개발공사, 1995, 석유의 특성, 129-133pp.