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Title:	Synthesis of green ferric nanoparticles from celery leaves for the removal orange gleb dye by fenton reaction
Authors:	Fayyadh Saba Naser (P95770)
Supervisor:	Nurfaizah Abu Tahrim, Dr.
Keywords:	Sewage disposal plants Universiti Kebangsaan Malaysia -- Dissertations Dissertations, Academic -- Malaysia
Issue Date:	30-Sep-2022
Description:	The environmental damage caused by the release of polluted wastewater from the manufacture of dyes needs urgent attention, especially in developing countries. Advanced oxidation processes (AOPs), including Fenton heterogeneous reactions, have shown promising results in removing various organic compounds. Traditionally based on the use of hydrogen peroxide and ferrous ions in solution, the widespread use of this reaction is still limited by a short pH window (2.5 to 3) and the difficulty of recovering the iron catalyst. In the present work, the Fenton reagent catalyzed by unequal iron nanoparticles manufactured from celery leaf extract (C-nZVFe) was studied to remove Orange Gelb (OG) dye in the water to save time, energy and cost. The adsorption of the OG dye was also tested on C-nZVFe particles. C-nZVFe was synthesized using polyphenols from celery leaf extract as a reducing agent and ferrous sulfate (FeSO4∙7H2O) as an iron precursor. Liquid batch processes were performed to verify the results of different experimental conditions, such as pH, hydrogen peroxide, reaction time, temperature, initial concentration of OG, and C-nZVFe concentration, and optimal conditions for the parameters were evaluated. The OG dye concentration in the sample was determined using UV-visible spectroscopy, the C-nZVFe surface morphology study was performed using field emission scanning electron microscopy with energy dispersive X-ray(FESEM/EDX) spectroscopy, and the C-nZVFe properties were analyzed using Fourier transform infrared (FTIR) spectroscopy. The adsorption capacity of C-nZVFe for the OG dye was determined using the Freundlich and Langmuir isothermal models, which are the two most common isothermal applications. The C-nZVFe particle size was in the 44-37 nm range. The FTIR results show broadband at 3779-3415 cm−1 which is attributed to the O-H expansion vibration, indicating the presence of polyphenols. The optimal combination of Fenton reagent for OG decolorization was 9 mg/L H2O2 and 500 mg/L FeSO4∙7H2O. At the initial OG dye concentration of 100 mg/L (pH 4) and a C-nZVFe dose of 35 mg/L at 50 °C, the OG dye removal efficiency was as high as 99% within 20 min, the highest value among other studies. The adsorption data show that the Langmuir isotherm fits better than the Freundlich isotherm. The catalyst is effective and excellent because it improved the removal process in a short period at a lower cost as the sorbents can be recovered and reused.,Master of Science
Pages:	142
Call Number:	TD746.F349 2021 tesis
Publisher:	UKM, Bangi
Appears in Collections:	Faculty of Science and Technology / Fakulti Sains dan Teknologi

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