Characterization of leachate and Its sources - a case study in Johor, Malaysia / Muhammad Akmal Harith Saifull Bahri ...[et al.]

Leachate samples were collected from two landfills in the state of Johor, Malaysia that contained municipal solid waste (MSW). Leachate were collected at three different checkpoints for each landfills. The aim of the study was to determine the chemical characteristics of different concentration of leachate with total of six different checkpoints from a sanitary and non sanitary landfill. The samples were collected from Seelong sanitary landfill and Simpang Renggam non-sanitary landfill. This study examined the leachate samples for its significant parameters such as pH, Chemical Oxygen Demand (COD), Aluminium (Al), Magnesium (Mg), Nickel (Ni), Lead (Pb), Zinc (Zn), Cadt,lium (Cd), Chromium (Cr) and Copper (Cu). Aluminium has the highest reading of concentration meanwhile cadmium has the lowest level of concentration in both landfills. From the analysis of data, it is confirmed that leachates from both landfills are contaminated with heavy metals and organics constituents. The leachates have high chemical oxygen demand with readings between 4000 and 5000 mg/L and are alkaline with pH values of7 to 9.