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The eco-friendly and cost-effective technique of using tyre rubber waste for the removal of harmful toxic metals from wastewater will contribute a lot to the industry as well as the humanity from the environmental perspective. In the present work, an attempt has been made using aircraft tyre rubber waste carbon to remove the heavy metal chromium which is added to the water bodies through wastewater from various manufacturing industries. The batch study was performed to determine the removal efficiency by testing the effect of parameters such as contact time, dosage, initial concentration, pH of the solution and temperature. The amount of chromium ions removed from solution decreased rapidly from pH 3 to pH 9. Increasing the adsorbent dose increased the percentage removal of chromium from 14.94 % to 92.24 %. The removal efficiency of chromium using aircraft tyre rubber waste carbon was relatively fast (equilibrium time of 60 minutes). The removal efficiency of chromium decreased from 59.79% to 49.02% with increasing concentration. The removal efficiency increased with an increase in temperature as well as an increase in dosage. The prepared adsorbent was characterized using Scanning Electron Microscope (SEM), Energy Dispersive X-ray Spectrometry (EDS / EDX) and X-ray diffraction (XRD) analysis to investigate the distinctive features of aircraft tyre rubber waste carbon. The results show that ATRWC has an excellent ability to remove chromium from the wastewaters.

APPLICATION OF A NOVEL ADSORBENT- AIRCRAFT TYRE RUBBER ASH FOR THE REMOVAL OF CHROMIUM FROM WASTEWATERS