Acidification of forest soils by acid rain is one of the most crucial topics today. On the other hand, the disposal method of waste oyster shell as industrial waste have not been detected. Here, we tried to reuse the oyster shell as neutralizer for acid rain. Dominant component of oyster shell is calcite (CaCO3, wt%>98) which is able to be dissolved easily in neutral or weak acidic aqueous solutions. Acid rain was collected and analyzed the components in order to investigate the neutralization effects by waste oyster shell.
