Karadeniz, FatmaGuzel, Fuat2024-04-242024-04-2420232190-68152190-6823https://doi.org/10.1007/s13399-022-02864-9https://hdl.handle.net/11468/14964In the present study, the adsorptive performance of new low-cost biochar (MFC) derived at optimal pyrolysis temperature from the Melia azedarach fruit (MF) in removing the methylene blue (MB) dye, diclofenac (DCF) drug, and copper (Cu(II)) metal ion from aqueous solution was investigated. The optimum production temperature was determined according to the maximum effect of pyrolysis temperature on textural properties such as BET surface area (S-BET), total pore volume (V-T), and average pore diameter (D-P) of biochars produced at different pyrolysis temperatures. The optimal biochar (MFC), which has an S-BET of 301.9 m(2)/g, V-T of 0.142 cm(3)/g, and D-P of 1.89 nm, was produced at a pyrolysis temperature of 700 degrees C and a pyrolysis time of 1 h. It was characterized by techniques such as nitrogen adsorption/desorption, SEM, XRD, FT-IR spectroscopy, and Boehm titration. Optimum removal conditions of each adsorbate used were determined by examining the effects of process variables such as MFC dose, initial adsorbate concentration, contact time, and solution temperature on their natural pH in an aqueous solution. The adsorption kinetics and isotherm data of the adsorbates examined are well described by pseudo-second-order and Langmuir models, respectively. The maximum adsorption capacity of MFC under optimum conditions determined for MB, DCF, and Cu(II) was found as 25.77, 5.72, and 71.43 mg/g, respectively. The calculated thermodynamic parameters for each adsorption system showed that the adsorption processes of MB and Cu(II), and DCF were endothermic and exothermic, respectively. In addition, MFC was observed to have high adsorption efficiency up to three cycles from regeneration studies performed for three adsorbates. The results of this study highlight that it can be evaluated as an alternative inexpensive precursor of MF for the sustainable production of environmentally friendly biochar as an adsorbent in the removal of water pollutants.eninfo:eu-repo/semantics/closedAccessMelia Azedarach FruitBiocharCharacterizationWater TreatmentKineticsThermodynamicsArticle13324292447WOS:0008045494000022-s2.0-8513103817010.1007/s13399-022-02864-9Q2Q2