Method of and apparatus for separation by agglomeration
US5338421A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Aug 2, 1993 |
| Grant date | Aug 16, 1994 |
| Priority date | — |
| Expiry date | Aug 2, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D17/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of separating an aqueous colloidal solution by agglomeration into water and agglomerate of colloidal particles by applying voltage to the aqueous colloidal solution to promote the agglomeration of colloidal particles. The frequency of the voltage to be applied to the aqueous colloidal solution is increased to about 10 kHz to improve efficiency of agglomeration and suppress electrolysis of water. As the frequency is increased, hydrogen is generated earlier than the reaction of oxygen generated by the electrolysis of water with the colloidal particles, thus not oxidizing the colloidal particles. Further, as the frequency is increased, the colloidal particles tend to obtain a greater oscillation energy, thus facilitating the agglomeration thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.