Abstract
Among heavy metal pollutants, chromium plays a major role in polluting environment. Several techniques are available and among these, adsorption process is found suitable for the removal of Cr VI species from wastewater. In the present work, the investigator has chosen the commercially available ash powder (CAP), which is being used as a sacred material by Hindus called Vibhoothi or Thiruneeru as the adsorbent. The adsorbent was characterized according to the Bureau of Indian Standards. It has also been planned to determine the adsorption potential of the adsorbent to assess the suitability of the material for the removal of Cr VI from waste waters. Batch mode adsorption experiments were carried out to study the effect of initial concentration of chromium solution, effect of the dose of the adsorbent, and pH of the solution. Various models such as Lagergren, Bhattacharya and Venkobachar were tested and the results are interpreted.
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