Dechlorination of persistent organic pollutants in petrochemical wastewater sludge through a planetary ball mill using synthesized nanocomposite

Numerous tons of hazardous wastes containing persistent organic pollutants (POPs) are stored in an unsafe manner the petrochemical industries. The planetary ball mill causes formation mineral Cl compounds during degradation polychlorinated presence various reagents. In addition, has been applied for synthesis diverse organic-inorganic hybrid nanomaterials. present study, Fe-metal framework was prepared using a mill, and then Fe@C nanocomposite with core/shell structure synthesised by carbonisation. X-ray diffraction (XRD) field emission scanning electron microscope (FESEM) transmission (TEM) were utilised to study materials. used as reagent degrade sludge wastewater treatment plant mill. CaO also compare effect nanocomposites on system performance. Ion chromatography (IC) analysis carried out determine chlorine mineralisation. Furthermore, Fourier transform infrared spectroscopy (FTIR) Raman chemical bonds. results illustrated zero-valent iron nanoparticle core protected carbon shell structure. Hence, most efficient additive, 97% dechlorination efficiency first hour while only 76% after 12 hours milling. major changes occurred phases, Simultaneously, graphite amorphous produced final products This indicates that aromatic structures C-Cl bonds broken down into inorganic compounds. Thus, this presented practical method producing materials degrading through