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https://ptsldigital.ukm.my/jspui/handle/123456789/499927Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | Wan Zuhairi Wan Yaacob, Assoc. Prof. Dr. | - |
| dc.contributor.author | Mustapha Atta (P66708) | - |
| dc.date.accessioned | 2023-10-13T09:36:16Z | - |
| dc.date.available | 2023-10-13T09:36:16Z | - |
| dc.date.issued | 2016-01-29 | - |
| dc.identifier.other | ukmvital:94721 | - |
| dc.identifier.uri | https://ptsldigital.ukm.my/jspui/handle/123456789/499927 | - |
| dc.description | Spreading of leachate to groundwater aquifer is a prevailing problem with unlined landfills. The reaction pathway, duration, distribution and fate of NH4+ is meaningful to evaluate the long term environmental impact of leachate to groundwater resources to prevent degradation of environment quality. The main purpose of this work was to identify and describe the mechanism and conditions which act to influence the concentration of NH4+, its transportation to the groundwater aquifer beneath the Taman Beringin ex-landfill site. For this purpose, the study apply hydrogeochemical data extractions technique of sensitive aquifer groundwater species and incorporate seasonal effects of both dry and wet season data for monitoring of NH4+. Groundwater samples were routinely collected from three individual groundwater monitoring wells and a cluster of three aligned wells at the landfill site. Quarterly, data were also extracted from leachate and surface water samples. Soil materials were collected within the same period for aquifer property information for adsorption test. Some physico-chemical parameters determined included: temperature, pH, EC, ORP, BOD, COD, S2-, Cl-, SO42-, NH3-N, NO3_, NO2-, Na⁺, Mg²⁺, K⁺, and Ca²⁺. The concentrations of trace metals comprised of Ag, As, Cd, Cu, Cr, Fe, Ni, Pb, Ba, Zn, Mn, and Se. A numerical model capable of simulating NH4+ transport was applied using visual MODFLOW flex modelling approach for further assessment of the landfill site. The results showed high concentration of most chemical parameters in groundwater compared to surface water. The mean concentration of NH4+ determine in the groundwater is 44.62 mg/L and varied over the sampling period in the wet season at 50.39 mg/L and the dry season at 40.07 mg/L. Based on the evaluation of the data, some proportion of oxidisable nitrogen (NO3-) concentrations (32.61 %) are attributed to biological process of nitrification and was negligible and NH4+ dominated the nitrogen concentration in the aquifer at the landfill site. No correlation between data set NH₄⁺ and NO3 (r = - 0.14324), and positive correlation between COD and NH₄⁺ (r = 0.706). The VMOD Flex model further revealed that vertical migration of NH4+ predominate over horizontal migration and is towards the Nanyang pond on the South-east side of the landfill and NH4+ at 59 mg/L initial concentration will reach Nanyang Pond after 36500 days (100 years). It was concluded that biological nitrification is not effectively decreasing the NH4+ concentrations in some of the wells, but are inhibited by chemical Fe-SO4, reducing conditions. Therefore, NH₄⁺ will remain undeclining as much as the conditions persist and are not reversed. Remedial measures are suggested to protect further spreading of leachates and NH4+ into Jinjang River and Nanyang pond and the environment via groundwater flow,Certification of Master's/Doctoral Thesis" is not avaialable | - |
| dc.language.iso | eng | - |
| dc.publisher | UKM, Bangi | - |
| dc.relation | Faculty of Science and Technology / Fakulti Sains dan Teknologi | - |
| dc.rights | UKM | - |
| dc.subject | Groundwater contamination | - |
| dc.subject | Ammonium | - |
| dc.subject | Ex-landfill side | - |
| dc.subject | Hydrogeochemical data | - |
| dc.subject | Universiti Kebangsaan Malaysia -- Dissertations | - |
| dc.title | Groundwater contamination from landfill site: the fate, transport of contaminants and modelling of ammonium at Taman Beringin ex-landfill site, Kuala Lumpur, Malaysia | - |
| dc.type | Theses | - |
| dc.format.pages | 572 | - |
| dc.identifier.barcode | 002703(2017) | - |
| Appears in Collections: | Faculty of Science and Technology / Fakulti Sains dan Teknologi | |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| ukmvital_94721+SOURCE1+SOURCE1.0.PDF Restricted Access | 1 MB | Adobe PDF |  View/Open |
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