A parametric study of dredged marine soils as passive geosorbent for escherichia coli removal in leachate

A high demand for dredging in the Malaysian water has resulted in a large amount of geowaste name dredged marine soils (DMS). The material are discarded in designated disposal sites on- and off-shore. A large number of studies in reusing this material within recent years demonstrate the importance o...

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Main Author:	Anuar, Nurasiah Mira
Format:	Thesis
Language:	English English English
Published:	2022
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://eprints.uthm.edu.my/8466/1/24p%20NURASIAH%20MIRA%20ANUAR.pdf http://eprints.uthm.edu.my/8466/2/NURASIAH%20MIRA%20ANUAR%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/8466/3/NURASIAH%20MIRA%20ANUAR%20WATERMARK.pdf
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spelling	my-uthm-ep.84662023-03-01T06:55:23Z A parametric study of dredged marine soils as passive geosorbent for escherichia coli removal in leachate 2022-10 Anuar, Nurasiah Mira TJ Mechanical engineering and machinery A high demand for dredging in the Malaysian water has resulted in a large amount of geowaste name dredged marine soils (DMS). The material are discarded in designated disposal sites on- and off-shore. A large number of studies in reusing this material within recent years demonstrate the importance of finding better management of DMS after the dredging process. The effective use of DMS as an adsorbent to remove chemical contaminants from leachate as potential alternatives to landfill liner has received widespread attention because of the environmentally friendly nature of clay material. A potential reuse area yet to be explored is the utilization of DMS to remove Escherichia coli (E. coli) from leachate. Effect of DMS geotechnical properties is a key point laid behind understanding passive removal of E. coli in leachate. Therefore by simulating landfill site, the efficiency of DMS as a geosorbent was studied. This study explored the effect of pH, soil particle size, salinity and temperature on E. coli removal from leachate. Geosorbent samples from various depths of each reactor were also retrieved and assessed to profile the spatial distribution of the E. coli. This study showed that the hydraulic conductivity of DMS fell within the acceptance range for liner material. The output count of E. coli was lower after 35 days of exposure to a high salinity level. E. coli removed by lower pH were antagonistic as their presence in the leachate was decreased. Also, the finer particle size required a longer time to adsorb the E. coli due to the soils’ porosity. The measured result in a higher temperature degree supported the idea that E. coli growth in landfill leachate was suppressed by the increment of the temperature. Concurrently a high number of E. coli was counted in the DMS with less than 0.0001% of E. coli was found in the effluent. The findings from this study concluded that DMS has the potential to be reused as a geosorbent to retain E. coli in leachate. 2022-10 Thesis http://eprints.uthm.edu.my/8466/ http://eprints.uthm.edu.my/8466/1/24p%20NURASIAH%20MIRA%20ANUAR.pdf text en public http://eprints.uthm.edu.my/8466/2/NURASIAH%20MIRA%20ANUAR%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/8466/3/NURASIAH%20MIRA%20ANUAR%20WATERMARK.pdf text en validuser phd doctoral Universiti Tun Hussein Onn Malaysia Fakulti Teknologi Kejuruteraan
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Anuar, Nurasiah Mira A parametric study of dredged marine soils as passive geosorbent for escherichia coli removal in leachate
description	A high demand for dredging in the Malaysian water has resulted in a large amount of geowaste name dredged marine soils (DMS). The material are discarded in designated disposal sites on- and off-shore. A large number of studies in reusing this material within recent years demonstrate the importance of finding better management of DMS after the dredging process. The effective use of DMS as an adsorbent to remove chemical contaminants from leachate as potential alternatives to landfill liner has received widespread attention because of the environmentally friendly nature of clay material. A potential reuse area yet to be explored is the utilization of DMS to remove Escherichia coli (E. coli) from leachate. Effect of DMS geotechnical properties is a key point laid behind understanding passive removal of E. coli in leachate. Therefore by simulating landfill site, the efficiency of DMS as a geosorbent was studied. This study explored the effect of pH, soil particle size, salinity and temperature on E. coli removal from leachate. Geosorbent samples from various depths of each reactor were also retrieved and assessed to profile the spatial distribution of the E. coli. This study showed that the hydraulic conductivity of DMS fell within the acceptance range for liner material. The output count of E. coli was lower after 35 days of exposure to a high salinity level. E. coli removed by lower pH were antagonistic as their presence in the leachate was decreased. Also, the finer particle size required a longer time to adsorb the E. coli due to the soils’ porosity. The measured result in a higher temperature degree supported the idea that E. coli growth in landfill leachate was suppressed by the increment of the temperature. Concurrently a high number of E. coli was counted in the DMS with less than 0.0001% of E. coli was found in the effluent. The findings from this study concluded that DMS has the potential to be reused as a geosorbent to retain E. coli in leachate.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Anuar, Nurasiah Mira
author_facet	Anuar, Nurasiah Mira
author_sort	Anuar, Nurasiah Mira
title	A parametric study of dredged marine soils as passive geosorbent for escherichia coli removal in leachate
title_short	A parametric study of dredged marine soils as passive geosorbent for escherichia coli removal in leachate
title_full	A parametric study of dredged marine soils as passive geosorbent for escherichia coli removal in leachate
title_fullStr	A parametric study of dredged marine soils as passive geosorbent for escherichia coli removal in leachate
title_full_unstemmed	A parametric study of dredged marine soils as passive geosorbent for escherichia coli removal in leachate
title_sort	parametric study of dredged marine soils as passive geosorbent for escherichia coli removal in leachate
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Fakulti Teknologi Kejuruteraan
publishDate	2022
url	http://eprints.uthm.edu.my/8466/1/24p%20NURASIAH%20MIRA%20ANUAR.pdf http://eprints.uthm.edu.my/8466/2/NURASIAH%20MIRA%20ANUAR%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/8466/3/NURASIAH%20MIRA%20ANUAR%20WATERMARK.pdf
_version_	1776103352519622656

A parametric study of dredged marine soils as passive geosorbent for escherichia coli removal in leachate

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