Authors : Idowu Iyabo Olateju; Abel Adekanmi Adeyi; Abdulwahab Giwa

Volume/Issue : Volume 11 - 2026, Issue 3 - March

Google Scholar : https://tinyurl.com/27r2xyas

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DOI : https://doi.org/10.38124/ijisrt/26mar1158

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Abstract : The effective adsorption of antibiotics from aqueous solutions has been a major challenge for environmental protection and public health. This work involved the synthesis of a carbon dots nanoparticle from fish scale waste for the purpose of antibiotic adsorption. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), and Fourier transform infrared (FTIR) analyses were used to characterize the synthesized fish scale carbon dots (FCD). Adsorption experiments were conducted to test the synthesised adsorbent's capacity to adsorb amoxicillin. The ideal parameters was determined using Response Surface Methodology (RSM) design, which resulted in a 95.82% removal efficiency at 32 minutes of contact time, 16 mg/L of amoxicillin concentration, and 0.15 g/L of FCD dosage. Additionally, the adsorption experiments showed that the adsorption rate was high at the lowest concentration of 10 mg/L, with a dosage of 0.15 mg and at time 45 min. The pseudo-second order model fit the kinetics data the best. Moreover, the Langmuir model provided the best fit for isothermal data. Findings from this research suggested that the FCD synthesized could be highly efficient for amoxicillin removal from liquid phase.

Keywords : Adsorption, Carbon Dots, Amoxicillin, Optimization, Isotherm, Fish Scale.

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