Biomedical Engineering Reference
In-Depth Information
Figure 8. Molecular structure of cationic dyes. C.I.: Color Index classification number; FW: Formula
weight.
4.1. Adsorption Kinetics
Process performance and ultimate cost of an adsorption system depend on the
effectiveness of process design and efficiency of process operation, which requires an
understanding of the kinetics of uptake or the time dependence of the concentration
distribution of the solute in both bulk solution and solid adsorbent. The time (min)-uptake
(mg/g) profile for adsorption of 100 or 200 mg/L of cationic dyes by γ-PGA was
characterized by a fast dye uptake, attaining equilibrium within 30 or 60 min, respectively, for
