Abstract
A waste material, stove ash, was applied to adsorbthe Direct Red 4BS. The dye amount absorbed by ash was improved with increasingthe dye initial concentration from 3g/Lto 7g/L. Dye was adsorbed within 2minutes and the equilibrium was achieved after 5 minutes. The kinetic of adsorptionreaction was also studied. The results showed that adsorption reaction was congruentwith Lagergren pseudo-second order kinetic equation, and different initial dyeconcentrations had their specific kinetic parameters.
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