TITLE:
Adsorptive Mass Transport of Dye on Rice Husk Ash
AUTHORS:
Debasish Sarkar, Amitava Bandyopadhyay
KEYWORDS:
Congo Red, Diffusivity, Dye Adsorption, Film Mass Transfer, Methylene Blue, Rice Husk Ash
JOURNAL NAME:
Journal of Water Resource and Protection,
Vol.2 No.5,
May
27,
2010
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.