STUDY THE ADSORPTION ABILITY OF ALIZARIN RED DYE FROM THEIR AQUEOUS SOLUTION ON SYNTHESIZED CARBON NANOTUBES

Abstract

In this research, Carbon nanotubes were fabricated by the electrolysis method using (5 x 50 mm) graphite rod as cathode and anode with 4.7 x10-3 mA\cm2 of current density for 6 h. Characterization and identification of the synthesized carbon nanotubes were done using an X-ray diffractometer (XRD), transmission electron microscope (TEM), and scanning electron microscope (SEM). The synthesized carbon nanotubes behave as an attractive adsorbent for alizarin red dye from wastewater. The effects on the dye removal were tested for contact time, temperatures, and initial concentration. The dye adsorption isotherm has been studied and was a good match for Freundlich isotherm models. The maximum adsorption capacity (qm) of samples 24,070 mg/g. Thermodynamic and kinetic studies were done to calculate the parameters (ΔS, ΔH, ΔG) and the adsorption order respectively.