COAL COMBUSTION FROM POWER PLANT INDUSTRY IN MISAMIS ORIENTAL, PHILIPPINES: A POTENTIAL GROUNDWATER CONTAMINATION AND HEAVY METAL DETECTION
OLIVA P. CANENCIA AND ANGELO MARK P. WALAG
Abstract
The rising demand of energy in the Philippines paved way for the proliferation of different
power sources, a more dependable energy source which is coal based thermal power plant. The disposal
of coal combustion products in ponds and landfills is a great concern because of its leachability. It can
become a problem when elements from the ash are leached contaminating groundwater sources. The main
goal of this research is to determine the concentration of heavy metals in the groundwater sources leached
from coal combustion products and the to assess the physico-chemical parameters of water quality. Standard
methods were employed in collection and determination of the pH, color, alkalinity, odor and temperature
and the heavy metals; As, Cd, Cr, Cu, Pb, Mn, and Hg. Mn was found to have the highest concentration
while Hg has the least concentration. The concentrations of heavy metals follow the trend Hg < Cd < Cu =
Pb< Cr < As < Mn. Concentrations of heavy metals were detected but not excessive enough to be over the
permissible limit set in the Philippine National Standards for Drinking Water thus making the groundwater
potable with regards to the measured parameters in the study
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