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EXPERIMENTAL STUDY OF GROUNDWATER CONTAMINANT TRANSPORT AND DETERMINATION OF LONGITUDINAL DISPERSIVITY

Year 2013, Volume: 14 Issue: 1, 29 - 37, 03.10.2013

Abstract

Groundwater is the safest and most important source of available freshwater. However, it is threatened by pollution arising from various activities. In this study the contaminant transport in homogeneous medium is investigated by means of an experimental set-up designed for the hydrologic cycle available in Hydraulics Laboratory. The experiments are carried out in the physical aquifer chamber 2 m long, 1 m wide and 0.10 m high. The piezometer tubes and observation wells are placed at the bottom of the chamber longitudinally and transversally. NaCl solution which represents contaminant is injected from a well instantaneously, as a point source. Electrical Conductivity (EC) values of the water are measured by using probes placed in the observation wells. Measurements are taken at specific time interval. The NaCl concentrations of the samples are determined indirectly by converting these measured EC values to concentration values by means of the calibration curve generated at the
beginning of the experiments. Consequently, the longitudinal dispersivity of the porous medium was determined by solving the one dimensional advective-dispersive equation.

References

  • Aksoy A.Ö., Guney M.Ş., 2010, Experimental determination of three-dimensional dis- persivities in homogeneous porous me- dium, Environmental Earth Sciences, Vo- lume 60, Number 2, 383-393
  • Bedient P.B., Rifai H. S., Newell C.J., 1994, Groundwater Contamination. Prentice Hall: New Jersey.
  • Huang K., Toride N., Van Genuchten M.TH., 1995, Experimental investigation of solu- te transport in large, homogeneous and heterogeneous, saturated soil columns. Tranport in Porous Media 18:283-302.
  • Kim D, Kim J, Yun S, Lee S., 2002, Determina- tion of longitudinal dispersivity in an un- confined sandy aquifer. Hydrol Process 16:1955–1964.

YERALTUSUYU KİRLİLİK TAŞINIM DENEYİ VE BOYUNA DİSPERSİVİTE DEĞERİNİN BELİRLENMESİ

Year 2013, Volume: 14 Issue: 1, 29 - 37, 03.10.2013

Abstract

Tatlı su kaymakları arasında yeraltısuyu en güvenilir ve en önemli kaynaktır. Ancak bu kaynaklar kirlilik tehdidiyle karşı karşıyadır. Bu çalışmada, Hidrolik laboratuarında mevcut olan Hidrolojik çevrim deney düzeneği kullanılarak homojen ortamda yeraltısuyu kirlilik taşınımı deneysel olarak incelenmiştir. Akiferin boyutları 2 m uzunluğunda, 1 m genişliğinde ve 0.10 m yüksekliğindedir. Piyezometre tüpleri ve gözlem kuyuları akiferde boyuna ve enine yönde yerleştirilmiştir. NaCl solüsyonu noktasal kirlilik kaynağı olacak şekilde bir kuyudan akifere verilmiştir. Suyun elektriksel iletkenlik değerleri gözlem kuyularından elektriksel iletkenlik probları kullanılarak ölçülmüştür. Ölçümler belirli aralıklarla gerçekleştirilmiştir. Ölçülen elektriksel iletkenlik değerleri deney başında çıkarılan kalibrasyon eğrisi yardımıyla NaCl konsantrasyonlarına dönüştürülmüştür. Sonuç olarak, gözenekli ortamın boyuna dispersivite değeri bir boyutlu adveksiyon-dispersiyon denklemi çözülerek elde edilmiştir.

References

  • Aksoy A.Ö., Guney M.Ş., 2010, Experimental determination of three-dimensional dis- persivities in homogeneous porous me- dium, Environmental Earth Sciences, Vo- lume 60, Number 2, 383-393
  • Bedient P.B., Rifai H. S., Newell C.J., 1994, Groundwater Contamination. Prentice Hall: New Jersey.
  • Huang K., Toride N., Van Genuchten M.TH., 1995, Experimental investigation of solu- te transport in large, homogeneous and heterogeneous, saturated soil columns. Tranport in Porous Media 18:283-302.
  • Kim D, Kim J, Yun S, Lee S., 2002, Determina- tion of longitudinal dispersivity in an un- confined sandy aquifer. Hydrol Process 16:1955–1964.
There are 4 citations in total.

Details

Primary Language English
Journal Section Articles
Authors

Ayşegül Aksoy

Gökçen Bombar This is me

Mehmet Güney This is me

Publication Date October 3, 2013
Published in Issue Year 2013 Volume: 14 Issue: 1

Cite

APA Aksoy, A., Bombar, G., & Güney, M. (2013). EXPERIMENTAL STUDY OF GROUNDWATER CONTAMINANT TRANSPORT AND DETERMINATION OF LONGITUDINAL DISPERSIVITY. Anadolu University Journal of Science and Technology A - Applied Sciences and Engineering, 14(1), 29-37.
AMA Aksoy A, Bombar G, Güney M. EXPERIMENTAL STUDY OF GROUNDWATER CONTAMINANT TRANSPORT AND DETERMINATION OF LONGITUDINAL DISPERSIVITY. AUJST-A. October 2013;14(1):29-37.
Chicago Aksoy, Ayşegül, Gökçen Bombar, and Mehmet Güney. “EXPERIMENTAL STUDY OF GROUNDWATER CONTAMINANT TRANSPORT AND DETERMINATION OF LONGITUDINAL DISPERSIVITY”. Anadolu University Journal of Science and Technology A - Applied Sciences and Engineering 14, no. 1 (October 2013): 29-37.
EndNote Aksoy A, Bombar G, Güney M (October 1, 2013) EXPERIMENTAL STUDY OF GROUNDWATER CONTAMINANT TRANSPORT AND DETERMINATION OF LONGITUDINAL DISPERSIVITY. Anadolu University Journal of Science and Technology A - Applied Sciences and Engineering 14 1 29–37.
IEEE A. Aksoy, G. Bombar, and M. Güney, “EXPERIMENTAL STUDY OF GROUNDWATER CONTAMINANT TRANSPORT AND DETERMINATION OF LONGITUDINAL DISPERSIVITY”, AUJST-A, vol. 14, no. 1, pp. 29–37, 2013.
ISNAD Aksoy, Ayşegül et al. “EXPERIMENTAL STUDY OF GROUNDWATER CONTAMINANT TRANSPORT AND DETERMINATION OF LONGITUDINAL DISPERSIVITY”. Anadolu University Journal of Science and Technology A - Applied Sciences and Engineering 14/1 (October 2013), 29-37.
JAMA Aksoy A, Bombar G, Güney M. EXPERIMENTAL STUDY OF GROUNDWATER CONTAMINANT TRANSPORT AND DETERMINATION OF LONGITUDINAL DISPERSIVITY. AUJST-A. 2013;14:29–37.
MLA Aksoy, Ayşegül et al. “EXPERIMENTAL STUDY OF GROUNDWATER CONTAMINANT TRANSPORT AND DETERMINATION OF LONGITUDINAL DISPERSIVITY”. Anadolu University Journal of Science and Technology A - Applied Sciences and Engineering, vol. 14, no. 1, 2013, pp. 29-37.
Vancouver Aksoy A, Bombar G, Güney M. EXPERIMENTAL STUDY OF GROUNDWATER CONTAMINANT TRANSPORT AND DETERMINATION OF LONGITUDINAL DISPERSIVITY. AUJST-A. 2013;14(1):29-37.