Removal of Bromothymol Blue from Industrial Wastewater using Manganese Oxide-Titanium Dioxide/ Multi-Walled Carbon Nanotubes Nanocomposite

Industrial wastewater treatment techniques for pollutant removal have restrictions due to their high cost and low efficiency. The objective of this recent work is to develop high-performance nanocomposites to remove the bromothymol blue dye (BTB) from industrial wastewater. The nanocomposites developed and tested are composed of manganese oxide-titanium dioxide/Multi-walled carbon nanotubes (Mn/Ti/MWCNTs) nanoparticles of various concentrations. The synthesized nanocomposites have been characterized using X-ray diffraction (XRD), Energy-dispersive X-ray spectroscopy (EDX), and Field Emission Scanning Electron Microscopy (FESEM) techniques. Results show that the addition of metal oxide nanoparticles to the MWCNTs matrix significantly enhanced removal efficiency. The developed Mn/Ti/MWCNTs nanocomposite achieved 78% removal of BTB from industrial wastewater. The Mn-Ti/CNTs nanocomposite exhibits a removal enhancement of MWCNTs alone was 45% and 32% over TiO₂:MnO₂ nanocomposite. The results of the current study demonstrate that the hybrid nanocomposite offers efficient removal of BTB from dye industrial wastewater compared to nano elements alone.