Chromium removal from water by activated carbon developed from waste rubber tires.
Summary of "Chromium removal from water by activated carbon developed from waste rubber tires."
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.
Affiliation
Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, India, vinodfcy@iitr.ernet.in.
Journal Details
This article was published in the following journal.
Name: Environmental science and pollution research international
ISSN: 1614-7499
Pages:
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/22573097
- DOI: http://dx.doi.org/10.1007/s11356-012-0950-9
Medical and Biotech [MESH] Definitions
Chromium Isotopes
Stable chromium atoms that have the same atomic number as the element chromium, but differ in atomic weight. Cr-50, 53, and 54 are stable chromium isotopes.
Chromium Radioisotopes
Unstable isotopes of chromium that decay or disintegrate emitting radiation. Cr atoms with atomic weights of 46-49, 51, 55, and 56 are radioactive chromium isotopes.
Hydro-lyases
Enzymes that catalyze the breakage of a carbon-oxygen bond leading to unsaturated products via the removal of water. EC 4.2.1.
Chromium Compounds
Inorganic compounds that contain chromium as an integral part of the molecule.
Carbon Sequestration
Any of several processes for the permanent or long-term artificial or natural capture or removal and storage of carbon dioxide and other forms of carbon, through biological, chemical or physical processes, in a manner that prevents it from being released into the atmosphere.
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