Treatment of saline leachate using electrocoagulation process
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Date
2019-06
Authors
Ain Syazana Binti Zulkafli
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Abstract
Landfill leachate is one of the most polluted wastewater. It contains high
concentrations of organic matter, inorganic ions and ammonia nitrogen (NH3N),
persistent organic pollutants (POPs), heavy metals and other recalcitrant organic
pollutants. However, the salinity of the leachate will slightly affect the treatment method.
To have an efficient saline leachate treatment, the appropriate treatment will be
performed to obtain the solution for the future management of the leachate. Therefore,
for the wellbeing of human health and environment in the future, the proper solution must
be identified to make sure the new generation had the best surrounding for their growth.
Besides, the ecosystem of the earth should be considered by us as a human being as we
depend on the resources of the natural. This research aimed to determine the efficiency
of heavy metal (Fe, Zn, Mn, Cu) removal, COD removal, turbidity removal and
ammoniacal nitrogen removal from saline leachate treatment by using electrocoagulation
process at specific time and also to study the effect of parameter such as applied voltage,
treatment time required an initial pH to achieve higher removal. Then, it is also aimed to
observe the floc size behaviour from the electrocoagulation process in saline leachate
treatment. This research was conducted using electrocoagulation process. This method
was conducted by controlling the parameter of this electrocoagulation process such as
their applied voltage, initial pH value and treatment time of this experiment. As a result,
the parameter that achieves the highest removal will become a reference in future for the
leachate treatment process. Therefore, the percentage of removal of heavy metal which
are copper, manganese, zinc and iron, turbidity, COD and ammoniacal-nitrogen are
100%, 97.22%, 90.05%, 90.05%, 95.90%, 55.95% and 90.84% respectively. Then, for
floc particle size, it depends on the voltage and the treatment time of the
electrocoagulation process