Figure 2: Comparison of 90% BB69 removal time of each stage in two-stage BB69/wood process. Table 1. Parameters for effect of initial concentration on the BB69/wood system. A Two-Stage Batch Adsorption Optimised Design for Basic Blue 69 Dye Removal to Minimum Contact Time
Figure 2: Comparison of 90% BB69 removal time of each stage in two-stage BB69/wood process
Table 1. Parameters for effect of initial concentration on the BB69/wood system
A Two-Stage Batch Adsorption Optimised Design for Basic Blue 69 Dye Removal to Minimum Contact Time
Yu-Ting Feng1#, Pei-Yu Lin1, Ming-Huang Wang1, I-Hsin Lin1 and Yuh-Shan Ho2*
1School of Public Health, Taipei Medical University
2Bibliometric Centre, Taipei Medical University - Wan-Fang Hospital
In some cases, a single-stage batch adsorber cannot achieve the high levels of dye removal specified but which can be readily achieved using an optimized two-stage batch adsorber design.
The cost and performance of product/equipment/system or the mode of application are always to control the process efficiency. This study investigates the adsorption of Basic Blue 69 onto wood and develops a two-stage batch adsorber design model. A design analysis method was developed to predict the percentage of Basic Blue 69 removal at various times of contact for a fixed mass of wood. The model minimizes the total contact time to achieve a fixed percentage of phenol removal using a fixed mass of wood.
Materials and Methods
A 0.1 g sample of wood (500±710 m) was added to each 50 ml volume of BB69 dye solution. The initial concentrations of BB69 dye solution tested were 50, 100 and 200 mg/dm3. Samples were withdrawn at suitable time intervals, filtered through a filter paper and then analysed with UV.
Figure 1. Pseudo-second order sorption kinetics of BB69 onto wood at various initial concentrations
Batch Adsorber Design
Mass balance equation
Pseudo-second-order kinetic model
Figure 3. Minimum contact time for various percentage BB69 removal in a two-stage process