Hydrothermally engineered Eriobotrya japonica leaves/MgO nanocomposites with potential applications in wastewater treatment

The hydrothermal method as the eco-friendly environmental was used in this study to prepare a high efficient nanocomposite adsorbent based on biochar (BC) derived from Eriobotrya japonica leaves and magnesium oxide nanoparticles (MgO NPs). prepared materials were characterized using FTIR, BET, SEM-EDX, TEM, XRD. adsorption of tartrazine (TZ) BC, MgO NPs, BC@MgO NPs better described by kinetic pseudo 2nd order model followed Langmuir isotherm model. maximum uptake ( Qm) 643.50 mg g ?1 at 25 ± 1 °C for NPs. calculated thermodynamic suggests that TZ dye spontaneous endothermic. TZ-loaded recycled regenerated six cycles with efficiency. Under conditions optimal C 0 = 50 L , dose 0.4 pH 4), removal 99.51% Box–Behnken design (BBD)-based optimization. synthesis showed great potential wastewaters. • composite synthesized successively. can effective remove an aqueous solution. Qm Excellent regeneration reusability removal. efficiency optimized BBD-RSM.