System and method for using ultramicroporous carbon for the selective removal of nitrate with capacitive deionization
US11358883B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2019 |
| Grant date | Jun 14, 2022 |
| Priority date | — |
| Expiry date | Feb 5, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G11/32
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present disclosure relates to a flow through electrode, capacitive deionization (FTE-CDI) system which is able to adsorb nitrates from water being treated using the system. The system makes use of a pair of electrodes arranged generally parallel to one another, with a water permeable dielectric sandwiched between the electrodes. The electrodes receive a direct current voltage from an electrical circuit. At least one of the electrodes is formed from a carbon material having a hierarchical pore size distribution which includes a first plurality of pores having a width of no more than about 1 nm, and a second plurality of micro-sized pores. The micron-sized pores enable a flow of water to be pushed through the electrodes while the first plurality of pores form adsorption sites for nitrate molecules carried in the water flowing through the electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.