Adsorption of Chromium from Wastewater on Different Adsorbents
Journal Title: International Journal of Research in Chemistry and Environment (IJRCE) - Year 2012, Vol 2, Issue 3
Abstract
Among the various pollutants which are emitted in the atmosphere, emissions of heavy metals in the environment pose a new serious trouble to mankind. The main threats to human health from heavy metals are associated with exposure to lead, cadmium, mercury, arsenic and chromium. Chromium and certain chromium compounds are known carcinogens. Long-term exposure of workers to airborne levels of chromium higher than those in the natural environment has been associated with lung cancer. Compounds containing hexavalent chromium - chromium (VI) - is believed to be the major problem when inhaled. In the present investigation an attempt is made to demonstrate the use of activated carbon and sawdust for removal of chromium from the synthetic effluent in batch operation. During the studies, both the adsorbents were found to be effective for chromium removal. The optimum values of adsorbent dose, pH, and initial adsorbate concentration were found. The percentage adsorption was found to be 98 to 99 percent for both the adsorbents. The optimum values of adsorbent dose, pH, initial adsorbate concentration were observed to be 0.2 gram/100 ml, 2 and 10 mg/l respectively and 0.35 gram/100ml, 4 and 10 mg/l respectively for sawdust.
Authors and Affiliations
Kulkarni J. , Patil V, Tapre W, Goswami K.
Keywords
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