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Composite of Ag2O-CuO/biochar as an adsorbent for removal of amoxicillin and paracetamol from aqueous solution

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Abstract

The presence of amoxicillin and paracetamol pollutants in water effluence has become a critical environmental problem. Therefore, the removal of drug pollutants is necessary to minimize before their discharge from the industrial pharmacy and hospital. Elimination of drug pollutants from the wastewater was carried out by the adsorbent designed from nanoparticle Ag2O-CuO and biochar as Ag2O-CuO/biochar. The surface area was carried out by the BET method and determined to be 138.15 m2/g. SEM–EDX shows the morphology of biochar with an unsmooth surface and irregular particle sizes. XRD analysis reveals that the crystallized size is about 30.5 nm. FTIR spectra show some functional groups such as hydroxyl, carbonyl, carboxyl, and the formation of Cu-O and Ag-O. The adsorption capacity was evaluated through a batch method at different pH, concentrations, adsorbent weights, and contact times. The result shows that paracetamol is a higher adsorption capacity than that amoxicillin. Equilibrium isothermal shows that Langmuir (R2 ≥ 0.99) is more favorable than the Freundlich model. The kinetic model follows the pseudo-second-order (R2 ≥ 0.99) that can be described as a chemisorption process. This result proved that Ag2O-CuO/biochar is a promising adsorbent for the removal of amoxicillin and paracetamol.

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Funding

Funding was provided by Kemdikbudristek (Grant No. National Competitive Basic Research No. 002/ST-DirDPPM/70/DPPM/PDKN-KEMDIKBUDRISTEK/V/2022).

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The authors contributed to data analysis, drafting, or revising the article, gave final approval of the version to be published, and agree to be accountable for all aspects of the work.

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Correspondence to A. Allwar.

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Editorial responsibility: Fatih ŞEN.

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Allwar, A., Herawati, M., Wardana, F.S. et al. Composite of Ag2O-CuO/biochar as an adsorbent for removal of amoxicillin and paracetamol from aqueous solution. Int. J. Environ. Sci. Technol. 20, 13411–13422 (2023). https://doi.org/10.1007/s13762-023-04922-9

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  • DOI: https://doi.org/10.1007/s13762-023-04922-9

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