Abstract:
The amount of freshwater available in the world is decreasing everyday. Different industries generates a variety of highly toxic organic wastes. Industrial dyes are highly toxic to human health and the phenols are called as carcinogenic even at a low concentration.To remove the pollutants like organic dyes and phenols is the current challenges of wastewater. To meet with such challenge, it is necessary to synthesize a versatile material that can remove different kinds of organic pollutants. Preparing bimetallic layered material with active sites on the surface; therefore, useful for the removal of pollutants from nature. In the present work Ni-Al LDH with the ratio of 3:1 were prepared by co-precipitation method and intercalate with Fe complex Schiff's base. The obtained material was characterized by Fourier transformation infrared spectroscopy (FTIR), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), Scanning electron microscopy (SEM) Ultra high performance liquid chromatography (UHPLC) and UV-Vis spectroscopy (UV) for systematically investigated for removal of methyl orange and 4-nitrophenol. Pollutant removal was optimized using various experimental parameters, like pH, concentration, ratio (catalyst to volume of solution): catalyst dose (mg)) and time. Under optimized conditions for MO dye such as; catalyst amount 10.0 mg at pH 8 using dye concentration of 12.5 mg/L (10 mL solution) and contact time of 30 minutes in continuous stirring mode; Schiff base modified Ni-Al LDH can remove 96% of MO dye. For 4-nitrophenol under optimized conditions like; catalyst amount 10.0 mg at pH 2 using 4-nitrophenol concentration of 10 mg/L (5mL solution) and H2O2 concentration of 20mM (5mL) and contact time of 5 minutes in continous stirring at 30 °C; Schiff’s base modified Ni-Al LDH can remove 99% of 4-nitrophenol. Schiff’s base modified Ni-Al LDH in order to active H2O2 to degrade 4-nitrophenol under mild conditions. Moreover, LDH structure offered strong synergetic interactions among active species that may be help in minimum leaching. The resueability test for schiff’s base modified Ni-Al LDH shows the LDH can be reuse four times; the degradation efficiency of MO dye at 1st run is 91.5% and at 4rth 73.59 while in 4- nitrophenol at 1st run the degradation efficiency is 95.0% and at 4rth run 78.2%
Page(s):
0-0
DOI:
DOI not available
Published:
Journal: Sixth International Conference on Sustainability in Process Industries (SPI) 19-20 Octover 2022 (Book of Abstracts), Volume: 0, Issue: 0, Year: 2022
Keywords:
Methyl orange dye
,
4 nitrophenol
,
Layered double hydroxide LDH
,
Schiffs base