Abstract
Dehydration kinetics of sodium perborate tetrahydrate to monohydrate is investigated at four different temperatures between 314.7 and 331 K in a controlled fluidized-bed drier. During the dehydration, no thermal decomposition of sodium perborate to sodium metaborate is observed. First-order kinetic behavior in this conversion is proved and the activation energy for dehydration is calculated as 80.18 kJ/mol. Effect of temperature on the bulk density of the product is given and compared with theoretical calculations. Change in the bulk density is attributed to two different competitive effects, one is shrinking and the other is puffing. Bulk density of the product can be adjusted by controlling these two parameters.
| Original language | English |
|---|---|
| Pages (from-to) | 115-120 |
| Number of pages | 6 |
| Journal | Chemical Engineering Science |
| Volume | 54 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 1999 |
Keywords
- Activation energy
- Bulk density
- Dehydration kinetic
- Fluidized bed drier
- Sodium perborate