Abstract
Aiming at the particularity of expanded bed adsorption-high content of bio-particles in the feedstock, the special ions (Li+ and Br-) was chosen as the tracer for residence time distribution (RTD) measurement in the presence of bio-particles. Some factors were investigated to prove the suitability of the ion-selective electrode, such as working range, response time, flow rate and concentration of bio-particles. The conditions of injection pulse were studied, the ionic concentration of pulse and the amount of pulse were optimized and the suitable pulse conditions are 0.1 mol·L-1 and 0.5 mL respectively. With the intact yeast cells as model bio-particles and E. coli homogenate as the real application object, RTD measurement was carried out in the presence of bio-particles, and the influences of bio-particles concentration and operation conditions were evaluated. The results demonstrate that the RTD analysis based on the ion-selective electrode is feasible and could be used as a good method for stability evaluation of expanded bed adsorption in the real application conditions.
| Original language | English |
|---|---|
| Pages (from-to) | 751-755 |
| Number of pages | 5 |
| Journal | Gao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities |
| Volume | 18 |
| Issue number | 6 |
| Publication status | Published - Dec 2004 |
| Externally published | Yes |
ASJC Scopus Subject Areas
- General Chemical Engineering
Keywords
- Bed stability
- Bio-particles
- Expanded bed adsorption
- Residence time distribution