Using predictive models unravel the potential of titanium oxide loaded activated carbon for removal of leachate ammoniacal nitrogen
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Date
2024-05
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Abstract
The TiO2
nanocomposite efficiency was determined under optimized conditions with activated carbon to
remove ammoniacal nitrogen (NH3
-N) from the leachate sample. In this work, the facile impregnation
and pyrolysis synthesis method was employed to prepare the nanocomposite, and their formation was
confirmed using the XRD and Raman studies. In contrast, Raman phonon mode intensity ratio ID
/IG
increases from 2.094 to 2.311, indicating the increase of electronic conductivity and defects with the
loading of TiO2
nanoparticles. The optimal conditions for achieving maximum NH3
-N removal of 75.8%
were found to be a pH of 7, a dose of 1.75 mg/L, and a temperature of 30oC, with a corresponding time
of 160 minutes. All adsorption isotherm records were properly fitted, and linear plots were utilized to
analyze NH3
-N removal through adsorption kinetic models. Additionally, an effective central composite
design (CCD) of response surface methodology (RSM) was employed to investigate the efficient removal
of NH3
-N.