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Efficient Tetracycline Removal From Aqueous Solutions Using Ionic Liquid Modified Magnetic Activated Carbon (Il@Mac) Publisher



Bazrafshan E1, 2 ; Zarei AA2 ; Mohammadi L3 ; Zafar MN4 ; Foroughi M1, 2 ; Aman S4 ; Sabri F1, 2 ; Mahvi AH5 ; Barahuie F6 ; Zafar M7
Authors
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Authors Affiliations
  1. 1. Health Sciences Research Center, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, 33787 95196, Iran
  2. 2. Department of Environmental Health Engineering, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, 33787 95196, Iran
  3. 3. Infectious Diseases and Tropical Medicine Research Center, Resistant Tuberculosis Institute, Zahedan University of Medical Sciences, Zahedan, 98167-43463, Iran
  4. 4. Department of Chemistry, University of Gujrat, Gujrat, 50700, Pakistan
  5. 5. Department of Environmental Health Engineering, Tehran University of Medical Sciences, Tehran, Iran
  6. 6. Faculty of Industry and Mining (Khash), University of Sistan and Baluchestan, Zahedan, 98167 45845, Iran
  7. 7. Department of Biochemistry and Biotechnology, University of Gujrat, Gujrat, 50700, Pakistan

Source: Journal of Environmental Chemical Engineering Published:2021


Abstract

Tetracycline (TCy) belongs to PPCPs is such a widely used antibacterial drug, which is discharged from urban wastewater treatment plants or agricultural effluents. Due to low metabolism, poor absorption, overuse, and misuse, TCy is considered as threat to environment and its removal from waste-water is vital. In this research, a novel ionic liquid modified magnetic activated carbon nanocomposite (IL@mAC) was synthesized, characterized, and the adsorption efficiency of IL@mAC for removal of TCy was investigated under different operational parameters of pH (3–11); dose of IL@mAC (0.01–0.1 g/50 mL); reaction time (30–240 min), and initial TCy concentration (50–1500 mg/L). The IL@mAC characterization was done using XRD, VSM, SEM-EDX, BET, and FTIR. Results of equilibrium experiment showed that the highest removal efficiency (~98%) was obtained using 0.06 g of IL@mAC in 135 min at pH 7 and temperature 303 K. Considering the correlation coefficients (R2) for different adsorption models, it can be deduced that adsorption of TCy onto IL@mAC was better followed by Langmuir (0.9985) in comparison to Freundlich (0.9322), and Temkin (0.9654) models. Furthermore, Langmuir adsorption capacity was observed to be 895.0 mg/g. The regeneration study showed that IL@mAC retained around 85% TCy adsorption efficiency after 6th cycle. Finally, the present study indicates that the IL@mAC is of a high applicability and has extremely high adsorbent capacity to remove TCy from water compared to most of other benchmark adsorbents reported in literature. © 2021 Elsevier Ltd
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