Experimental and Numerical Modeling of DNAPL Mass Discharge from the Elliptic Pool in Saturated Homogeneous Sandy Soil

  • Authors

    • Hatem Asal Gzar
    • Rasha Abdulwahed Hussain
    2018-11-28
    https://doi.org/10.14419/ijet.v7i4.20.26424
  • Dissolution, Homogeneous soil, Mass transport, Numerical modeling, TCE pool

  • Abstract

    "The present study aims to study the dissolution and mass transport of trichloroethylene (TCE) as Dense Non Aqueous Phase Liquid (DNAPL) in saturated porous media." A rectangular Perspex tank of internal dimensions (150cm length 20cm width and 40 cm height) used to represent the model aquifer. The tank was packed with homogenous soil (Karbala sand)"."Unidirectional flow at five different interstitial velocities (0.9, 1.8, 2.34, 2.7, and 3.6) cm/hr assumed to study the process. The average mass transfer coefficient" was determined for each velocity .Their values were increased with increasing the velocity reaching a limit value" .A conservative tracer is used to obtain the longitudinal and transverse aquifer dispersivities"."An elliptic shape of (TCE) pool was used to carry out the dissolution processes. Steady state dissolved (TCE) concentrations at downstream were collected from ten ports with two different depths under five interstitial velocities". Two linear relationships are created from an elliptic trichloroethylene pool: these relationships were between the average Peclet number in x-direction (Pe*x(e)) with the overall Sherwood number (Sh*(e )), and the other between the average Peclet number in y-direction (Pe*y(e) ) with the overall Sherwood number (Sh*(e))". A numerical modeling was achieved using COMSOL software.

     

     

  • References

    1. [1] Rubin, H., Narkis, N., & Carberry, J. (Eds.). (2013). Soil and aquifer pollution: non-aqueous phase liquids-contamination and reclamation. Springer Science & Business Media .

      [2] Eberhardt, C., &Grathwohl, P. (2002). Time scales of organic contaminant dissolution from complex source zones: coal tar pools vs. blobs. Journal of Contaminant Hydrology, 59(1-2), 45-66.â€.

      [3] Parker, J. C., & Park, E. (2004). Modeling fieldâ€scale dense nonaqueous phase liquid dissolution kinetics in heterogeneous aquifers. Water Resources Research, 40(5).

      [4] Sharma, J. K., Gautam, R. K., Nanekar, S. V., Weber, R., Singh, B. K., Singh, S. K., &Juwarkar, A. A. (2017). Advances and perspective in bioremediation of polychlorinated biphenyl-contaminated soils. Environmental Science and Pollution Research, 1-21

      [5] Sulaymon, A. H., &Gzar, H. A. (2011). Experimental investigation and numerical modeling of light nonaqueous phase liquid dissolution and transport in a saturated zone of the soil. Journal of hazardous materials, 186(2-3), 1601-1614

      [6] Seyedabbasi, M. A., Newell, C. J., Adamson, D. T., & Sale, T. C. (2012). Relative contribution of DNAPL dissolution and matrix diffusion to the long-term persistence of chlorinated solvent source zones. Journal of contaminant hydrology, 134, 69-81

      [7] Christ, J. A., Ramsburg, C. A., Pennell, K. D., &Abriola, L. M. (2010). Predicting DNAPL mass discharge from pool-dominated source zones. Journal of contaminant hydrology, 114(1-4), 18-34.â€.

      [8] DiFilippo, E. L., &Brusseau, M. L. (2008). Relationship between mass-flux reduction and source-zone mass removal: analysis of field data. Journal of Contaminant Hydrology, 98(1-2), 22-35.

      [9] Quinn, J., Geiger, C., Clausen, C., Brooks, K., Coon, C., O'Hara, S., ... &Holdsworth, T. (2005). Field demonstration of DNAPL dehalogenation using emulsified zero-valent iron. Environmental Science & Technology, 39(5), 1309-1318.

      [10] Waldemer, R. H., Tratnyek, P. G., Johnson, R. L., &Nurmi, J. T. (2007). Oxidation of chlorinated ethenes by heat-activated persulfate: kinetics and products. Environmental Science & Technology, 41(3), 1010-1015.†â€

      [11] Chrysikopoulos, C. V., &Katzourakis, V. E. (2015). Colloid particle sizeâ€dependent dispersivity. Water Resources Research, 51(6), 4668-4683 .â€

      [12] Essaid, H. I., Bekins, B. A., &Cozzarelli, I. M. (2015). Organic contaminant transport and fate in the subsurface: Evolution of knowledge and understanding. Water Resources Research, 51(7), 4861-4902.â€

      [13] †Christ, J. A., Ramsburg, C. A., Abriola, L. M., Pennell, K. D., &Löffler, F. E. (2004). Coupling aggressive mass removal with microbial reductive dechlorination for remediation of DNAPL source zones: a review and assessment. Environmental Health Perspectives, 113(4), 465-477.â€

      [14] Logan, Bruce E. Environmental transport processes. John Wiley & Sons, 2012. †[15] Sale, T. C., & McWhorter, D. B. (2001). Steady state mass transfer from singleâ€component dense nonaqueous phase liquids in uniform flow fields. Water Resources Research, 37(2), 393-404.

      [15] Zadeh, K. S., Shirmohammadi, A., Montas, H. J., & Felton, G. (2007). Evaluation of infiltration models in contaminated landscape. Journal of Environmental Science and Health Part A, 42(7), 983-988.â€

      [16] Clement, T. P., Kim, Y. C., Gautam, T. R., & Lee, K. K. (2004). Experimental and numerical investigation of DNAPL dissolution processes in a laboratory aquifer model. Groundwater Monitoring & Remediation, 24(4), 88-96.â€

      [17] Lee, K. Y., &Chrysikopoulos, C. V. (2006). Dissolution of a multicomponent DNAPL pool in an experimental aquifer. Journal of hazardous materials, 128(2-3), 218-226.â€

      [18] [Wang, H., & Wu, H. (2009). Analytical solutions of three-dimensional contaminant transport in uniform flow field in porous media: A library. Frontiers of Environmental Science & Engineering in China, 3(1), 112-128.

      [19] Cirpka, O. A., Olsson, Ã…., Ju, Q., Rahman, M. A., &Grathwohl, P. (2006). Determination of transverse dispersion coefficients from reactive plume lengths. Groundwater, 44(2), 212-221.â€

      [20] Chen, K., Zhan, H., & Zhou, R. (2016). Subsurface solute transport with one-, two-, and three-dimensional arbitrary shape sources. Journal of contaminant hydrology, 190, 44-57.â€

      [21] Chrysikopoulos, C. V., Hsuan, P. Y., Fyrillas, M. M., & Lee, K. Y. (2003). Mass transfer coefficient and concentration boundary layer thickness for a dissolving NAPL pool in porous media. Journal of hazardous materials, 97(1-3), 245-255.â€

      [22] Jawitz, J. W., Fure, A. D., Demmy, G. G., Berglund, S., & Rao, P. S. C. (2005). Groundwater contaminant flux reduction resulting from nonaqueous phase liquid mass reduction. Water Resources Research, 41(10).â€

  • Downloads

  • How to Cite

    Asal Gzar, H., & Abdulwahed Hussain, R. (2018). Experimental and Numerical Modeling of DNAPL Mass Discharge from the Elliptic Pool in Saturated Homogeneous Sandy Soil. International Journal of Engineering & Technology, 7(4.20), 588-593. https://doi.org/10.14419/ijet.v7i4.20.26424

    Received date: 2019-01-22

    Accepted date: 2019-01-22

    Published date: 2018-11-28