2.2. Lateritic soil sampling and characterization
Lateritic soilwas collected at Kuari Beseri, Perlis and ground into
powder using a ball mill grinder. The soil used was the outermost
layer (topsoil). It is important to determine the characteristics of
lateritic soil must be determined prior to use as a coagulant for the
treatment of landfill leachate. The parameters characterizing the
lateritic soil were pH, total organic carbon and the chemical