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Adsorptive Mass Transport of Dye on Rice Husk Ash
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Journal of Water Resource and Protection·Volume 02 (2010)·Pages 424–431·Published 27 May 2010·DOI10.4236/jwarp.2010.25049
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Abstract
Experimentations have been carried out to characterize the adsorption of Methylene Blue (MB) and Congo Red (CR) dyes in the aqueous phase onto Rice Husk Ash (RHA). Theoretically analyses are also made for describing the sorption and diffusion processes. The effective pore diffusivities of the dye molecules studied in RHA are determined by a suitable global optimization technique. The depth of penetration, on the other hand, has been estimated for various initial concentrations of dyes. Theoretically predicted concentration pro-files are compared with the experimental values at different initial concentrations of these dyes. Such com-parative studies indicate that the predicted values are in excellent agreement with the experimental values.
KeywordsCongo RedDiffusivityDye AdsorptionFilm Mass TransferMethylene BlueRice Husk Ash
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