Influence of Macro-pores on DNAPL Migration in Double-Porosity Soil Using Light Transmission Visualization Method

Double porosity is a substantial microstructure characteristic in a wide range of geomaterials. It is a natural phenomenon that can be found in many types of soil, and it can result from biological, chemical or mechanical damage. In this paper, the influence of macro-pores on dense non-aqueous phase...

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Main Authors:	Alazaiza, Motasem Y. D., Ngien, S. K., Mustafa, M. Bob, Samira, A. Kamaruddin, Wan Faizal, Wan Ishak
Format:	Article
Language:	English
Published:	Springer International Publishing 2017
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/17431/ http://umpir.ump.edu.my/id/eprint/17431/ http://umpir.ump.edu.my/id/eprint/17431/ http://umpir.ump.edu.my/id/eprint/17431/8/Influence%20of%20Macro-pores%20on%20DNAPL%20Migration%20in%20Double-Porosity1.pdf

id	ump-17431
recordtype	eprints
spelling	ump-174312017-08-16T08:26:56Z http://umpir.ump.edu.my/id/eprint/17431/ Influence of Macro-pores on DNAPL Migration in Double-Porosity Soil Using Light Transmission Visualization Method Alazaiza, Motasem Y. D. Ngien, S. K. Mustafa, M. Bob Samira, A. Kamaruddin Wan Faizal, Wan Ishak TA Engineering (General). Civil engineering (General) Double porosity is a substantial microstructure characteristic in a wide range of geomaterials. It is a natural phenomenon that can be found in many types of soil, and it can result from biological, chemical or mechanical damage. In this paper, the influence of macro-pores on dense non-aqueous phase liquid (DNAPL) migration in double-porosity medium was investigated using light transmission visualization technique. Three experiments were carried out in two-dimensional flow chambers filled with a double-porosity medium composed of a mixture of local sand and sintered kaolin clay spheres arranged in a periodic manner. In each experiment, a different volumetric fraction of macro-pores and micropores was used. Tetrachloroethylene (PCE) was used to simulate DNAPL, and it was dyed using Oil-Red-O for better visualization. A predetermined amount of PCE was injected into the flow chambers and this amount was re-calculated using image analysis. A very strong correlation was found between the PCE amount injected and the amount calculated from image analysis in each experiment. The experiment was repeated by filling the flow chamber with silica sand to represent single-porosity medium. The results show that the macro-pores have a considerable effect on the PCE migration in double-porosity soil as the PCE movement was the fastest in the third experiment which contained the largest macro-pores volume. The accuracy of the method was validated using statistical analysis. The results show a slight difference between the means of the three experiments, indicating that the method is viable for monitoring NAPL migration in double-porosity medium under different volumetric fractions of macro-pores and micropores. Springer International Publishing 2017 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/17431/8/Influence%20of%20Macro-pores%20on%20DNAPL%20Migration%20in%20Double-Porosity1.pdf Alazaiza, Motasem Y. D. and Ngien, S. K. and Mustafa, M. Bob and Samira, A. Kamaruddin and Wan Faizal, Wan Ishak (2017) Influence of Macro-pores on DNAPL Migration in Double-Porosity Soil Using Light Transmission Visualization Method. Transport in Porous Media, 117 (1). pp. 103-123. ISSN 0169-3913 http://doi.org/10.1007/s11242-017-0822-3 DOI: 10.1007/s11242-017-0822-3
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Alazaiza, Motasem Y. D. Ngien, S. K. Mustafa, M. Bob Samira, A. Kamaruddin Wan Faizal, Wan Ishak Influence of Macro-pores on DNAPL Migration in Double-Porosity Soil Using Light Transmission Visualization Method
description	Double porosity is a substantial microstructure characteristic in a wide range of geomaterials. It is a natural phenomenon that can be found in many types of soil, and it can result from biological, chemical or mechanical damage. In this paper, the influence of macro-pores on dense non-aqueous phase liquid (DNAPL) migration in double-porosity medium was investigated using light transmission visualization technique. Three experiments were carried out in two-dimensional flow chambers filled with a double-porosity medium composed of a mixture of local sand and sintered kaolin clay spheres arranged in a periodic manner. In each experiment, a different volumetric fraction of macro-pores and micropores was used. Tetrachloroethylene (PCE) was used to simulate DNAPL, and it was dyed using Oil-Red-O for better visualization. A predetermined amount of PCE was injected into the flow chambers and this amount was re-calculated using image analysis. A very strong correlation was found between the PCE amount injected and the amount calculated from image analysis in each experiment. The experiment was repeated by filling the flow chamber with silica sand to represent single-porosity medium. The results show that the macro-pores have a considerable effect on the PCE migration in double-porosity soil as the PCE movement was the fastest in the third experiment which contained the largest macro-pores volume. The accuracy of the method was validated using statistical analysis. The results show a slight difference between the means of the three experiments, indicating that the method is viable for monitoring NAPL migration in double-porosity medium under different volumetric fractions of macro-pores and micropores.
format	Article
author	Alazaiza, Motasem Y. D. Ngien, S. K. Mustafa, M. Bob Samira, A. Kamaruddin Wan Faizal, Wan Ishak
author_facet	Alazaiza, Motasem Y. D. Ngien, S. K. Mustafa, M. Bob Samira, A. Kamaruddin Wan Faizal, Wan Ishak
author_sort	Alazaiza, Motasem Y. D.
title	Influence of Macro-pores on DNAPL Migration in Double-Porosity Soil Using Light Transmission Visualization Method
title_short	Influence of Macro-pores on DNAPL Migration in Double-Porosity Soil Using Light Transmission Visualization Method
title_full	Influence of Macro-pores on DNAPL Migration in Double-Porosity Soil Using Light Transmission Visualization Method
title_fullStr	Influence of Macro-pores on DNAPL Migration in Double-Porosity Soil Using Light Transmission Visualization Method
title_full_unstemmed	Influence of Macro-pores on DNAPL Migration in Double-Porosity Soil Using Light Transmission Visualization Method
title_sort	influence of macro-pores on dnapl migration in double-porosity soil using light transmission visualization method
publisher	Springer International Publishing
publishDate	2017
url	http://umpir.ump.edu.my/id/eprint/17431/ http://umpir.ump.edu.my/id/eprint/17431/ http://umpir.ump.edu.my/id/eprint/17431/ http://umpir.ump.edu.my/id/eprint/17431/8/Influence%20of%20Macro-pores%20on%20DNAPL%20Migration%20in%20Double-Porosity1.pdf
first_indexed	2023-09-18T22:24:03Z
last_indexed	2023-09-18T22:24:03Z
_version_	1777415848035614720

Influence of Macro-pores on DNAPL Migration in Double-Porosity Soil Using Light Transmission Visualization Method

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