Studies on dye removal from aqueous media using activated coal and clay: An adsorption approach

The use of activated clay and coal as adsorbents in the removal of three different colors of dyes (acidic orange dye, D1, basic yellow dye, D2, dispersed blue dye D3) from aqueous media is studied. The study involved the continuous fixed bed and batch adsorption process employed for the determination of breakthrough times and adsorption constants (Freundlich and Langmuir) respectively. For the activated coal in fixed bed the breakthrough time were 20,20 and 25 mins for D1, D2 and D3, respectively. For activated clay, the break through time were 20,20 and 25 mins for D1,D2 and D3 respectively. The experimental equilibrium data obtained for coal and clay fit better in the Freundlich and Langmuir adsorption isotherms, respectively at the conditions of the experiment. It can be concluded that if will processed, clay and coal are potential sources of adsorbing materials. (M.C.Menkiti and O.D. Onukwuli. Studies on dye removal from aqueous media using activated coal and clay: an adsorption approach. New York Science Journal 2011;4(2):91-95). (ISSN: 1554-0200). http://www.sciencepub.net/newyork .