Production of multivalent ion-rich process streams using multi-stage osmotic separation
US10245555B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2016 |
| Grant date | Apr 2, 2019 |
| Priority date | — |
| Expiry date | Aug 12, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2301/046
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed herein are systems and methods in which ion-selective separation and multi-stage osmotic separation is used to produce multivalent-ion-rich process streams. According to certain embodiments, multiple separations may be used to process an aqueous feed stream containing solubilized monovalent ions and solubilized multivalent ions to produce a stream enriched in the multivalent ions. The separations may be arranged, according to certain embodiments, to enhance the overall separation process such that the product stream contains—relative to the initial aqueous feed stream—a high amount of multivalent ions, a high amount of water from the aqueous feed stream, and/or a high ratio of multivalent ions to monovalent ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.