52
Anal. Method Environ. Chem. J. 3 (3) (2020) 44-53
4. Conclusions
In this study, a central composition design (CCD) was
used for evaluation of four variables of adsorption
(time, temperature, initial ion concentration and
amount of adsorbent) for Metronidazole by Fe
3
O
4
@
MWCNTs. Quadratic model was developed to
correlate the variables to the response. Through
the analysis of response surfaces, adsorbent
dose, pH and adsorption time were found to have
signicant effects on removal efciency, whereas
adsorbent dose showed that most signicant. All
removal analysis of Metronidazole were done
based on Fe
3
O
4
@MWCNTs by HPLC in water and
wastewater samples. Optimization was carried out
and the experimental values were found to agree
satisfactorily with the predicted values. Isotherm
study of process showed maximum adsorption
capacity of Fe
3
O
4
@MWCNTs for removal of
metronidazole (215 mg g
-1
). Also, application
of proposed method for real wastewater sample
showed high removal efciency of proposed
sorbent.
5. Acknowledgement
Authors hereby appreciate the staffs of health
laboratory of Zabol University of medical sciences
for their cooperation to perform this research. The
research was funded by the Zabol University of
medical sciences.
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