| Sumario: | Abstract Herein, Kiwi peel activated carbon (AC), Materials Institute Lavoisier (MIL-88B (Fe), and AC/MIL-88B (Fe) composite were synthesized and used as catalysts to degrade Reactive Red 198. The material properties were analyzed by the FTIR, BET-BJH, XRD, FESEM, EDX, TGA, and UV–Vis/DRS. The BET surface area of AC, MIL-88B (Fe) and AC/MIL-88B (Fe) was 1113.3, 150.7, and 199.4 m/g, respectively. The band gap values (E g) estimated by Tauc plot method, were obtained 5.06, 4.19 and 3.79 eV for AC, MIL-88B (Fe) and AC/MIL-88B (Fe), respectively. The results indicated that the AC/MIL-88B (Fe) composite had higher photocatalytic activity (99%) than that of pure AC (79%) and MIL-88B (Fe) catalysts (87%). The decolorization kinetic was matched well with the second-order model. Moreover, the data were modeled using least squares support vector machine which optimized with Cuckoo optimization algorithm. The optimal parameters were found 0.837 and 3.49e+02 based on σ and γ values, respectively. The mean square error (MSE) and correlation coefficient (R) values were obtained 3.97 and 0.948. Therefore, the attained data, materials characterization and prediction of modeling validate the composite form of MIL-88B(Fe) with new AC, had better photocatalytic activity in comparison with the individual form. Graphical abstract Image 1 Highlights • Activated carbon/metal-organic framework nanocomposite photocatalyst was prepared. • Dye degradation mathematical modeling from wastewater was done. • Surface area of AC, MIL-88B and AC/MIL-88B was 1113.3, 150.7, and 199.4 m/g. • The photocatalytic decolorization kinetics followed the second-order kinetic model. • Least squares support vector machine with Cuckoo algorithm modeled dye degradation.
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