Rusnam, Rusnam and Erizal, Erizal and Suarni T, Suarni T
THE PHYTOREMEDIATION TECHNOLOGY IN THE RECOVERY
OF MERCURY POLLUTION BY USING WATER HYACINTH PLANT
(EICHHORNIA CRASSIPES) FOR WATER QUALITY OF IRRIGATION.
Jr. of Industrial Pollution Control
.
Abstract
Water pollution by heavy metals such as mercury (Hg), lead, cadmium, cobalt, zinc, arsenic,
iron, copper and other compounds, originally spread in small concentrations. But in the next
process, it will experience an accumulation or concentration so that at certain concentrations,
it can cause the negative impact on the environment. The results from the previous research
showed that the
water hyacinth plant (Eichhornia crassipes) has the highest ability in reducing
heavy metal pollution of mercury. The objective of this research is to analyze the ability of
the water hyacinth plant (Eichhornia crassipes) in reducing the concentration of metal with
variety of water flow rates. This research was conducted to test the water hyacinth plant
(Eichhornia crassipes) in some discharge water sources which contaminated with mercury in
the downstream of gold mining in Batang Hari River on a laboratory scale with a continuous
flow. The result of this research revealed that the water hyacinth plant (Eichhornia crassipes
)
can lower the concentration of heavy metals Hg to the limit of water quality for irrigation. The
elimination efficiency levels from heavy metals mercury ranged between 49.9% and 54.2%. In
addition, heavy metals mercury with phytoremediation of water hyacinth also did not affect to
the levels of
dissolved oxygen (DO), temperature and TSS (Total Suspended Solid).
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