Adsorptive Mass Transport of Dye on Rice Husk Ash

• 作者: Amitava Bandyopadhyay Debasish Sarkar
• 来源期刊: 水资源与保护(英文)
• 学科: 化学
• 关键词: CONGO Red DIFFUSIVITY DYE Adsorption Film Mass Transfer METHYLENE Blue Rice Husk ASH
• 年，卷（期）: 2010,（5）
• 页码范围: 424-431
• 页数: 8页
• 分类号: O6

摘要

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.