Photocatalytic Activity of Al2O3.Fe2O3 Synthesized by Ultrasonic-Assisted Mechanical Stirring

Ullah, Inam; Ali, Shaukat; Hanif, Muhammad Asif; Zia, Muhammad Anjum

doi:10.15244/pjoes/70442

Cited by 6 publications

(2 citation statements)

References 19 publications

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“…Since azo dyes have been widely used in the dying process of the textile industry, they constitute the largest groups of organic pollutants present in textile wastewater. Azo dyes have at least one -N=N-azo bond linking aromatic rings in their molecular structure and are considered mostly as non-biodegradable compounds [15]. The textile industry is known to be the most polluting industry due to the consumption of nearly 21-377 m 3 of water per ton of textile product and the presence of unfixed dyes [16].…”

Section: -mentioning

confidence: 99%

Decolorization of Reactive Red 239 Using UV-C Activated Peroxydisulfate

Kartal

2019

Pol. J. Environ. Stud.

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Decolorization of Reactive Red 239 (RR239) using a sulfate radical (SO 4 .-)-based advanced oxidation process was investigated in a batch photoreactor. SO 4 .was generated in situ through activation of peroxydisulfate under UV-C illumination. Effect of initial pH (3-9), initial dye concentration (20-50 mg dm-3), S 2 O 8 2dosage (0-3 mmol dm-3) and lamp power (0-16 W) were explored. It was found that initial pH of RR239 solution had no considerable effect on decolorization efficiency. Experimental results demonstrated that decolorization efficiency enhanced with increasing S 2 O 8 2dosage and lamp power and decreasing initial dye concentration. Quenching experiments were performed with alcohols to determine the dominant radical. Under the conditions tested in this study, 98% and 70% decolorization and aromatic degradation efficiencies were obtained within 120 min of irradiation time, respectively. Decolorization and aromatic degradation efficiencies of RR239 in PS/UV-C and PMS/UV-C systems were evaluated in terms of electrical energy consumption per order by figure of merit approach.

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Section: -mentioning

confidence: 99%

Decolorization of Reactive Red 239 Using UV-C Activated Peroxydisulfate

Kartal

2019

Pol. J. Environ. Stud.

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“…This group of dyes is documented to be eco-friendly and slightly poisonous as compared to synthetic dyes [22][23][24]. However, it has been reported that some natural dyes may cause mutagenic effects such as safflower yellow, and elderberry color and continuous inhalation of carmine can cause asthma, but it can be said that some even have a curative impact such as turmeric with its antibacterial properties due to its coloring component, curcumin [25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Statistical Modeling for the Extraction of Dye from Natural Source and Industrial Applications

Jabeen¹,

Ali²,

Nadeem³

et al. 2019

Pol. J. Environ. Stud.

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This study is intended to scrutinize the consequence of extraction conditions of Lawsonia Inermis (henna) leaves on the color strength values of dyed fabric. Extraction pH, M:L ratio, and time were optimized using central composite design (CCD) under response surface methodology (RSM). We investigated how the maximum colour strength values were obtained at pH 6.64 in about 78 minutes extraction with an M:L ratio of 1:44. ANOVA results showed that all the extraction parameters significantly affect the colour strength values of dyed samples. 99% variation in the response was indicated in the 2 nd-order regression equation for K/S. The fastness properties with respect to light, washing, and rubbing were quite satisfactory of dyed samples under optimized extraction conditions.

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