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.
Campbell, Patrick, et al. "System and method for using ultramicroporous carbon for the selective removal of nitrate with capacitive deionization." US 11,358,883, United States Patent and Trademark Office, Jun. 2022.
Campbell, Patrick, Hernandez, Maira Ceron, Hawks, Steven, Loeb, Colin, Pham, Tuan Anh, & Stadermann, Michael (2022). System and method for using ultramicroporous carbon for the selective removal of nitrate with capacitive deionization (U.S. Patent No.
Campbell, Patrick, Hernandez, Maira Ceron, Hawks, Steven, et al., "System and method for using ultramicroporous carbon for the selective removal of nitrate with capacitive deionization," US 11,358,883, issued June 14, 2022.
@misc{osti_1893030,
author = {Campbell, Patrick and Hernandez, Maira Ceron and Hawks, Steven and Loeb, Colin and Pham, Tuan Anh and Stadermann, Michael},
title = {System and method for using ultramicroporous carbon for the selective removal of nitrate with capacitive deionization},
annote = {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.},
url = {https://www.osti.gov/biblio/1893030},
place = {United States},
year = {2022},
month = {06},
note = {US Patent