03066ntm a2200289 a 4500 vtls000098115 KUKTEM 20251117113326.0 161118s2016 my a f abm 000 0 eng d THE0000531(Local) 201905151612 nazirah 201712121027 fateeha 201611181155 saini 201611181154 saini UMP FKASA .L56 2016 r Bc. Lim, Chia Ni Investigation of DNAPL migration in double-porosity media using image analysis / Lim Chia Ni Kuantan, Pahang : UMP, 2016 xvi, 74 p. : ill. (some col.) ; 30 cm. + 1 CD-ROM Faculty of Civil Engineering and Earth Resources Project Paper (Bachelors of Civil Engineering) -- Universiti Malaysia Pahang – 2016 Bibliography : p. 60-62 Nowadays, non-aqueous phase liquids (NAPL) are one of the common contaminants that lead to soil pollution. In this study, laboratory experiments were carried out to investigate the dense non-aqueous phase liquid (DNAPL) migration in double-porosity media using light transmission visualization (LTV) method. Two experiments were conducted in different types of double-porous media; namely aggregated kaolin with moisture content of 30% as well as a mixture of sintered clay spheres and Ottawa sand. An experimental setup was specially designed to execute the LTV method. Dyed tetrachloroethylene (PCE) which is one of the DNAPLs was poured into both experiments in order to study the behavior of DNAPL migration. The instantaneous migration of PCE in the double-porosity media was captured by a digital camera. Image analysis was applied to all the captured images. Experimental results obtained from the image analysis were discussed qualitatively in terms of area, vertical distance travelled, velocity and saturation. Besides, the comparison was made between the pouring method and injection method of PCE in 30% moisture content of aggregated kaolin sample. Regarding to the obtained results from different release methods of PCE, the coverage of PCE was larger under pouring method. Furthermore, for the experiment of a mixture of sintered clay spheres and Ottawa sand, PCE migration ceased at the half height of test sample due to the absorbability of sintered clay spheres only. This phenomenon was credited to Ottawa sand has no effect to the absorption of water and air. Hence, coverage of PCE in aggregated kaolin test sample was bigger than the mixture of sintered clay spheres and Ottawa sand. It was found that different release methods of PCE and the types of double-porosity soil media can become the influential factors in PCE migration. Faculty of Civil Engineering and Earth Resources Dissertations Universities and Colleges Dissertations Theses http://ecollib.ump.edu.my/id/eprint/4004 Access in library only 0 0 0 6 10000 10000 2019-09-04 0 FKASA .L56 2016 r Bc. 0000114993 2019-09-04 00:00:00 1 2019-09-04 PSM 0 0 0 6 10000 10000 2019-09-04 0 CD 10220 | FKASA .L56 2016 r Bc. 0000114994 2019-09-04 00:00:00 1 2019-09-04 PSM VIRTUA40 6780 6786 VTLSSORT0080*0200*0400*0900*1000*2450*2600*3000*5000*5020*5040*5200*6100*6500*6501*8560*9992