Browse > Article

Lab-Scale Air/Bio-Sparging Study to Remediate Diesel-Contaminated Soil and Groundwater : The Effect of Air Injection Rate and Pattern  

Chang, Soon-Woong (Dept. of Environmental Engineering, Kyonggi University)
Lee, Si-Jin (Dept. of Environmental Engineering, Kyonggi University)
Cho, Su-Hyung (Environmental Facilities Management Corporation)
Yoon, Jun-Ki (Engineering & Construction Group, Samsung Corporation)
Publication Information
Journal of Soil and Groundwater Environment / v.11, no.4, 2006 , pp. 10-17 More about this Journal
Abstract
Laboratory-scale two-dimensional aquifer physical model studies were conducted to assess the effect of air injection rate and air injection pattern on the removal of disel contaminated soil and groundwater by air/bio-sparging. The experimental results were represented that the optimal conditions in this experiment were as air injection rate of 1,000 ml/min and pulsed air injection pattern(15 min on/off). The results of the TPH reduction, DO consumption and $CO_2$ production indicate the effective biodegradation evidence of diesel. Based on our results, The minimal $O_2$ supply and pulsed air injection pattern could effectively enhance the diesel removal and the pulsing air injection had effect on oxygenation in this system. Thus, the cost of operating air/bio-sparging system will be reduced if optimal air injection rate and pulsed air injection pattern are applied to remediate contaminants.
Keywords
Air/Bio-sparging; Diesel; Air injection rate; Air injection Pattern;
Citations & Related Records
연도 인용수 순위
  • Reference
1 이진용, 이철효, 이강근, 2002, 유류오염 지하수에 대한 공기주입 정화법의 적용성 평가, 지질학회지, 38, 125-130
2 Johnson, P., Johnson, R., Neaville, C., Neaville, C., Hanssen, E., Sterns, S., and Dortch, I., 1997, An assessment of conventional in situ air sparging pilot tests, Ground Water, 35, 765-774   DOI   ScienceOn
3 Reddy, K. and Adams, J., 2001, Effects of soil heterogeneity on airflow patterns and hydrocarbon removal during in situ air sparging, J. of Geotechnical and Geoenvironmental Engineering, 127, 234-247   DOI   ScienceOn
4 Reddy, K. and Adams, J., 2000, System effects on benzene removal from saturated soils and ground water using air sparging, J. of Environmental Engineering, 124, 288-299
5 Reddy, K., Kosgi, S., and Zhou J., 1995, A review of in-situ air sparging for the remediation of VOC contaminated soils and groundwater, Hazardous Waste and Hazardous Materials, 12, 97-118   DOI   ScienceOn
6 Rutherford, K. and Johnson, P., 2000, Effects of process control changes on aquifer oxygenation rates during in situ air sparging in homogeneous aquifers, Ground Water Monitoring & Remediation, 16, 132-141   DOI   ScienceOn
7 Lundegard, P., Chaffee, B., and LaBrecque, D., 2001, Effective air delivery from a horizontal sparging well, Ground Water Monitoring & Remediation, 21, 117-123   DOI   ScienceOn
8 Adams, J. and Reddy, K., 2003, Extent of benzene biodegradation in saturated soil column during air sparging, Ground Water Monitoring & Remediation, 23, 85-94   DOI   ScienceOn
9 Johnson, P., Das, A., and Bruce, C., 1999, Effect of flow rate changes and pulsing on the treatment of source zones by in situ air sparging, Environmental Science and Technology, 33, 1726-1731   DOI   ScienceOn
10 Heron, G, Gierke, J.S., Faulkner, B., Mravik, S. Wood, L., and Enfield, C.G., 2002, Pulsed air sparging in aquifers contaminated with dense nonaqueous phase liquids, Ground Water Monitoring & Remediation, 22, 73-82   DOI   ScienceOn