Chromium removal from water by activated carbon developed from waste rubber tires

Environ Sci Pollut Res Int. 2013 Mar;20(3):1261-8. doi: 10.1007/s11356-012-0950-9. Epub 2012 May 10.

Abstract

Because of the continuous production of large amount of waste tires, the disposal of waste tires represents a major environmental issue throughout the world. This paper reports the utilization of waste tires (hard-to-dispose waste) as a precursor in the production of activated carbons (pollution-cleaning adsorbent). In the preparation of activated carbon (AC), waste rubber tire (WRT) was thermally treated and activated. The tire-derived activated carbon was characterized by means of scanning electron microscope, energy-dispersive X-ray spectroscopy, FTIR spectrophotometer, and X-ray diffraction. In the IR spectrum, a number of bands centred at about 3409, 2350, 1710, 1650, and 1300-1000 cm(-1) prove the present of hydroxyl and carboxyl groups on the surface of AC in addition to C═C double bonds. The developed AC was tested and evaluated as potential adsorbent removal of chromium (III). Experimental parameters, such as contact time, initial concentration, adsorbent dosage and pH were optimized. A rapid uptake of chromium ions was observed and the equilibrium is achieved in 1 h. It was also found that the adsorption process is pH dependent. This work adds to the global discussion of the cost-effective utilization of waste rubber tires for waste water treatment.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adsorption
  • Charcoal
  • Chromium* / chemistry
  • Microscopy, Electron, Scanning
  • Rubber / chemistry
  • Rubber / toxicity
  • Spectrometry, X-Ray Emission
  • Spectroscopy, Fourier Transform Infrared
  • Wastewater*
  • Water Purification / methods*
  • X-Ray Diffraction

Substances

  • Waste Water
  • Chromium
  • Charcoal
  • Rubber