Chromium removal from water by activated carbon developed from waste rubber tires |
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Authors: | Vinod Kumar Gupta Imran Ali Tawfik A Saleh M N Siddiqui Shilpi Agarwal |
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Institution: | 1. Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, India 2. Chemistry Department, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia 3. Chemistry Department, Jammia Millia Islamia, New Delhi, India
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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. |
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