| dc.description.abstract | Landfilling is the most common method of waste disposal in Malaysia, due to
the ease of the method with the least financial constraints. However, landfills in
Malaysia are mostly just dumpsites, without any recirculation of leachate or treatment,
which has contaminated nearby lands and water sources. Such situation not only
contributes to environmental issues, but social issues as a whole. In this study, leachate
from Padang Siding landfill, located in Perlis, a northern state in Malaysia was studied.
The landfill involved is an active uncontrolled landfill. The main goal of this study is to
provide reliable data on the leachate composition for treatment and monitoring purposes
and to identify suitable tracers in leachate Leachate is collected at three points in two
cycles, during the wet season and dry season.12 parameters are tested. This study has
shown that the BOD5 (5 day Biochemical Oxygen Demand) of the leachate is in the
range of 154.67mg/L to 526.67, highest COD(Chemical Oxygen Demand) reading of
860mg/L in leachate seepage, 870mg/L in Pond 1, and 310mg/L for Pond 2. The
conductivity of the leachate is highest in Pond 1, recording 2806μS/cm, with highest
total dissolved solids and DO (dissolved oxygen) in leachate seepage at 2.859g/L and
49.9% respectively. pH 14 in Pond 2 was the highest and finally, the oxidation
reduction potential was lowest in Pond 1,The leachate is influenced by heavy metals
(Cu, Ni, Zn, Mn, and Cd.) The composition of the leachate and soil is analyzed using
the XRF (X-Ray Fluorescence) and AAS(Atomic Absorption Spectroscopy) analyzer. | en_US |
