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Selective Removal of Reactive Orange 16 via Adsorption onto Activated Alumina, and Its Application to Textile Wastewater

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Abstract

This study demonstrates the sorptive removal of reactive orange 16 (RO-16), a textile dye from water, as well as, from a local textile industry via activated alumina-based batch technique. The adsorption of the dye was pH-dependent within the range of 2.49–12.21. Thermodynamic parameters such as ∆Ho, ∆So and ∆Go were obtained from Van’t Hoff equation applied to the obtained data at temperature 303, 323, 333, and 343 K. Further, the adsorption data were applied to the well-known Langmuir isotherm model, and the competitive sorption of RO-16 was studied in the presence of other commonly used reactive dyes (used in textile dyeing process), namely: Remazol brilliant blue R, reactive black 5, and reactive red 120. Effect of various chemicals used in the textile dyeing process such as acetic acid, formic acid, urea, sodium chloride, sodium nitrate, sodium sulfate, sodium phosphate, and sodium carbonate on the adsorption of RO-16 was studied in the concentration range of 500–5000 mg.L−1. Briefly, RO-16 removal was not affected by the urea, and formic acid addition; however, 3000 mg.L−1 of acetic acid showed up to 30% decrease in RO-16 removal. Chloride and nitrate did not affect RO-16 removal; nevertheless, carbonate, sulfate, and phosphate prominently decreased the adsorption efficiency at > 1000 mg.L−1 concentration. Increase in temperature from 303 to 353 K, and therefore the negative ΔSo observed during all batches, manifests that the proposed adsorption process is exothermic. The optimized adsorption conditions represented 98.54% RO-16 removal upon mixing with real wastewater from a local textile industry.

Research Highlights

  • Sorptive removal of reactive orange 16.

  • Activated alumina for selective removal of reactive orange 16.

  • Effect of various chemicals on the proposed adsorption study.

  • Application of the designed study to textile wastewater.

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Data generated during the study are subject to a data sharing mandate and available in a public repository, however, does not issue datasets with DOIs.

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Acknowledgements

The first author gratefully acknowledges the financial support of Higher Education Commission (HEC) of Pakistan to sponsor this research in South Korea.

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Correspondence to Naseem Rauf.

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The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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Rauf, N., Tahir, S.S., Yoon-Seok, C. et al. Selective Removal of Reactive Orange 16 via Adsorption onto Activated Alumina, and Its Application to Textile Wastewater. Int J Environ Res 16, 95 (2022). https://doi.org/10.1007/s41742-022-00479-6

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  • DOI: https://doi.org/10.1007/s41742-022-00479-6

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