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1

Photocatalytic activity of Al2O3.Fe2O3 synthesized by ultrasonic-assisted mechanical stirring

100%
Ullah I., Ali S., Hanif M. A., Anjum Zia M.
Polish Journal of Environmental Studies
|
2017
|
tom 26
|
nr 6
Water pollution has been a prime concern for scientists for decades. Different treatment methods have been suggested by different researchers, with photocatalysis emerging as an efficient method for treating industrial textile wastewater. This study is designed to synthesize a nano-photocatalyst for the degradation of two synthetic dyes. The Al₂O₃.Fe₂O₃ nano-photocatalyst was synthesized by a novel technique: ultrasonic-assisted mechanical stirring and synthesized photocatalyst characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive x-ray (EDX) analysis, dynamic light scattering, and BET surface area analysis. The Al₂O₃.Fe₂O₃ nano-photocatalyst was tested for its potential to degrade methyl orange and methylene blue dyes. Important influencing parameters (pH, catalyst dose, initial dye concentration, and reaction time) have been optimized during the dye degradation process. The highest degradation for methyl orange (39%) and methylene blue (45%) was achieved by using 60 mg/100 mL catalyst dose and 120 minutes of reaction time at room temperature. The study results indicated that Al₂O₃.Fe₂O₃ nano-photocatalyst has good potential for the removal of dyes from industrial effluents.
2

Environmentally friendly extraction of bioactive compounds from Mentha arvensis using deep eutectic solvent as green extraction media

100%
Naseem Z., Zahid M., Hanif M. A., Shahid M.
Polish Journal of Environmental Studies
|
2020
|
tom 29
|
nr 5
3

Enhanced removal of golden XGL dye by clay composites: batch and column studies

100%
Nausheen S., Bhatti H. N., Hanif M. A., Ur-Rehman K.
Polish Journal of Environmental Studies
|
2017
|
tom 26
|
nr 5
The adsorption potential of native clay and clay composites was investigated for Golden XGL dye removal from aqueous solution in batch and fixed-bed column modes. Morphological structure and functional groups of the adsorbent were determined by Fourier transform infrared spectroscopy analysis. In batch adsorption studies maximum adsorption capacity was determined by optimization of operational parameters, i.e., pH, adsorbent dose, contact time, initial dye concentration, and temperature. The effects of initial dye concentration, adsorbent bed height, and influent flow rate on fixed-bed column adsorption breakthrough curves were also evaluated. The obtained data was analyzed by the application of different equilibrium and kinetic models. Adsorption of Golden XGL dye onto native clay and clay composites was spontaneous, exothermic, and had great affinity between the adsorbate and adsorbent. The findings of this study revealed that clay composites are a potential adsorbent for cationic dye pollution remediation.
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