Assessing the influence of infiltration on the migration of light non-aqueous phase liquid in double-porosity soil media using a light transmission visualization method

Assessing the influence of infiltration on the migration of light non-aqueous phase liquid in double-porosity soil media using a light transmission visualization method

The influence of infiltration on the migration of a light non-aqueous phase liquid (LNAPL) in double-porosity soil using the light transmission visualization (LTV) technique is investigated. Two LNAPL volumes (low and high volumes) were exposed to two rainfall intensities (light and heavy infiltrati...

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Main Authors: Alazaiza, M. Y. D., Ngien, S. K., Copty, N., Bob, M. M., Samira A., Kamaruddin
Format: Article
Language:English
Published: Springer 2019
Subjects:
TA Engineering (General). Civil engineering (General)
Online Access:http://umpir.ump.edu.my/id/eprint/24624/
http://umpir.ump.edu.my/id/eprint/24624/
http://umpir.ump.edu.my/id/eprint/24624/
http://umpir.ump.edu.my/id/eprint/24624/1/Assessing%20the%20influence%20of%20infiltration%20on%20the%20migration%20of%20light%20non-aqueous.pdf
id ump-24624
recordtype eprints
spelling ump-246242019-05-21T07:55:15Z http://umpir.ump.edu.my/id/eprint/24624/ Assessing the influence of infiltration on the migration of light non-aqueous phase liquid in double-porosity soil media using a light transmission visualization method Alazaiza, M. Y. D. Ngien, S. K. Copty, N. Bob, M. M. Samira A., Kamaruddin TA Engineering (General). Civil engineering (General) The influence of infiltration on the migration of a light non-aqueous phase liquid (LNAPL) in double-porosity soil using the light transmission visualization (LTV) technique is investigated. Two LNAPL volumes (low and high volumes) were exposed to two rainfall intensities (light and heavy infiltration). For comparison purposes, the experiments were also repeated by compacting the flow chamber with silica sand only to represent the single-porosity medium and to investigate the influence of double-porosity on LNAPL migration. High-resolution LTV images of the flow chamber during LNAPL injection and subsequent water infiltration events were collected. Results show that the LNAPL migration depth during injection and its migration velocity were both correlated to the LNAPL volume. Subsequent water infiltration events caused the LNAPL that was entrapped in the porous media to be pushed further downward in all the experiments. The LNAPL migration velocity was 1.1 and 1.6 cm/h for the low and high LNAPL spillage volumes for double-porosity experiments, respectively, a reduction rate of 64.7 and 70% compared to the LNAPL migration velocity during LNAPL injection, respectively. However, for single-porosity experiments, the LNAPL migration velocity was 0.7 and 1.2 cm/h for the low and high LNAPL volumes, respectively. Furthermore, it was observed that the capillary fringe level was depressed in the saturated zone due to the influence of both infiltration and LNAPL volume. This study demonstrates that the LTV technique is an accurate and cost-effective laboratory tool for the visualization of the time-dependent influence of infiltration on LNAPL migration in porous media. Springer 2019-03 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/24624/1/Assessing%20the%20influence%20of%20infiltration%20on%20the%20migration%20of%20light%20non-aqueous.pdf Alazaiza, M. Y. D. and Ngien, S. K. and Copty, N. and Bob, M. M. and Samira A., Kamaruddin (2019) Assessing the influence of infiltration on the migration of light non-aqueous phase liquid in double-porosity soil media using a light transmission visualization method. Hydrogeology Journal, 27 (2). pp. 581-593. ISSN 1431-2174 (print); 1435-0157 (online) https://doi.org/10.1007/s10040-018-1904-1 https://doi.org/10.1007/s10040-018-1904-1
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, M. Y. D.
Ngien, S. K.
Copty, N.
Bob, M. M.
Samira A., Kamaruddin
Assessing the influence of infiltration on the migration of light non-aqueous phase liquid in double-porosity soil media using a light transmission visualization method
description The influence of infiltration on the migration of a light non-aqueous phase liquid (LNAPL) in double-porosity soil using the light transmission visualization (LTV) technique is investigated. Two LNAPL volumes (low and high volumes) were exposed to two rainfall intensities (light and heavy infiltration). For comparison purposes, the experiments were also repeated by compacting the flow chamber with silica sand only to represent the single-porosity medium and to investigate the influence of double-porosity on LNAPL migration. High-resolution LTV images of the flow chamber during LNAPL injection and subsequent water infiltration events were collected. Results show that the LNAPL migration depth during injection and its migration velocity were both correlated to the LNAPL volume. Subsequent water infiltration events caused the LNAPL that was entrapped in the porous media to be pushed further downward in all the experiments. The LNAPL migration velocity was 1.1 and 1.6 cm/h for the low and high LNAPL spillage volumes for double-porosity experiments, respectively, a reduction rate of 64.7 and 70% compared to the LNAPL migration velocity during LNAPL injection, respectively. However, for single-porosity experiments, the LNAPL migration velocity was 0.7 and 1.2 cm/h for the low and high LNAPL volumes, respectively. Furthermore, it was observed that the capillary fringe level was depressed in the saturated zone due to the influence of both infiltration and LNAPL volume. This study demonstrates that the LTV technique is an accurate and cost-effective laboratory tool for the visualization of the time-dependent influence of infiltration on LNAPL migration in porous media.
format Article
author Alazaiza, M. Y. D.
Ngien, S. K.
Copty, N.
Bob, M. M.
Samira A., Kamaruddin
author_facet Alazaiza, M. Y. D.
Ngien, S. K.
Copty, N.
Bob, M. M.
Samira A., Kamaruddin
author_sort Alazaiza, M. Y. D.
title Assessing the influence of infiltration on the migration of light non-aqueous phase liquid in double-porosity soil media using a light transmission visualization method
title_short Assessing the influence of infiltration on the migration of light non-aqueous phase liquid in double-porosity soil media using a light transmission visualization method
title_full Assessing the influence of infiltration on the migration of light non-aqueous phase liquid in double-porosity soil media using a light transmission visualization method
title_fullStr Assessing the influence of infiltration on the migration of light non-aqueous phase liquid in double-porosity soil media using a light transmission visualization method
title_full_unstemmed Assessing the influence of infiltration on the migration of light non-aqueous phase liquid in double-porosity soil media using a light transmission visualization method
title_sort assessing the influence of infiltration on the migration of light non-aqueous phase liquid in double-porosity soil media using a light transmission visualization method
publisher Springer
publishDate 2019
url http://umpir.ump.edu.my/id/eprint/24624/
http://umpir.ump.edu.my/id/eprint/24624/
http://umpir.ump.edu.my/id/eprint/24624/
http://umpir.ump.edu.my/id/eprint/24624/1/Assessing%20the%20influence%20of%20infiltration%20on%20the%20migration%20of%20light%20non-aqueous.pdf
first_indexed 2023-09-18T22:37:22Z
last_indexed 2023-09-18T22:37:22Z
_version_ 1777416685550043136

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