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Background and
Objectives: 2, 4-dichlorophenoxy acetic acid is a well-known herbicide
which can be dangerous for both human
and animal health in different ways such as its presence in drinking water.
This study aimed at Performance of granular activated carbon to 2-4-D removal
from aqueous solution and assessing the relationship between COD and 2-4-D
concentration
Materials and Methods: This study is a lab-scale study. Firstly, different 2-4-D concentrations were
prepared from Stock solution (1000 mg/L), and then their CODs were measured.
Optimum pH for 2-4-D removal was determined and its absorption rate at
different concentrations was measured.
Results: Results
showed a clear relationship between COD and 2-4-D concentration. On the other
hand, COD removal increased as time elapsed, so that maximum removal 90% and
84% at initial 2-4-D concentrations of 50 and 100 mg/L were observed at contact
time of 50 min respectively. Optimum pH for all concentrations was determined
as 6.
Conclusion: According
to present study it can be concluded that activated carbon have be up to 90% of
2-4-D removal from water environment. In addition, a significant relationship
was observed between COD and 2-4-D concentration, so that direct measurement of
COD can be used instead of 2-4-D measurement.
