Abstract

• In this research, the clay sample was collected from Khin Phone Chone Village, Kyaukpadaung Township, Mandalay Region. Elemental Analysis of the clay sample was determined by EDXRF technique. The extraction of silica from sample was performed by using various concentration of NaOH and HCl, 2 M, 4 M, 6 M, 8 M and 10 M. Then, silica was prepared from the sample using various stirring time and different temperature. For the sample, stirring time 60 min, 90 min and 120 min were used. By using different temperature such as 60 ºC, 80 ºC, 100 ºC, the optimum temperature for silica extraction was chosen at 80 ºC for the sample. The extracted silica was characterized by using EDXRF, FT-IR, XRD and SEM analysis. From EDXRF data, the highest amount of silica were found to be 81.892%. From FT IR spectra, the peak at 1052 cm-1 for extracted silica was indicated the presence of Si-O stretching. SEM image showed that silica from clay has amorphous nature. The adsorption behavior of extracted silica has been studied. Waste water from lead acid battery industry were treated with extracted silica by using standing method. Before and after treatment, the quantities of waste water were determined. After treatment, the percent removal was found to be 64.76% from sample (1) and 34.84% for sample (2).