Buffer-free process cycle for CO2 sequestration and carbonate production from brine waste streams with high salinity
Abstract
A method includes: (1) using a chelating agent, extracting divalent ions from a brine solution as complexes of the chelating agent and the divalent ions; (2) using a weak acid, regenerating the chelating agent and producing a divalent ion salt solution; and (3) introducing carbon dioxide to the divalent ion salt solution to induce precipitation of the divalent ions as a carbonate salt. Another method includes: (1) combining water with carbon dioxide to produce a carbon dioxide solution; (2) introducing an ion exchanger to the carbon dioxide solution to induce exchange of alkali metal cations included in the ion exchanger with protons included in the carbon dioxide solution and to produce a bicarbonate salt solution of the alkali metal cations; and (3) introducing a brine solution to the bicarbonate salt solution to induce precipitation of divalent ions from the brine solution as a carbonate salt.
- Inventors:
- Issue Date:
- Research Org.:
- Univ. of California, Oakland, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1824089
- Patent Number(s):
- 11040898
- Application Number:
- 16/431,300
- Assignee:
- The Regents of the University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01D - COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01F - COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- DOE Contract Number:
- FE0029825; FE0031705
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 06/04/2019
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Sant, Gaurav, Wei, Zongsu, Wang, Bu, La Plante, Erika Callagon, and Simonetti, Dante A. Buffer-free process cycle for CO2 sequestration and carbonate production from brine waste streams with high salinity. United States: N. p., 2021.
Web.
Sant, Gaurav, Wei, Zongsu, Wang, Bu, La Plante, Erika Callagon, & Simonetti, Dante A. Buffer-free process cycle for CO2 sequestration and carbonate production from brine waste streams with high salinity. United States.
Sant, Gaurav, Wei, Zongsu, Wang, Bu, La Plante, Erika Callagon, and Simonetti, Dante A. Tue .
"Buffer-free process cycle for CO2 sequestration and carbonate production from brine waste streams with high salinity". United States. https://www.osti.gov/servlets/purl/1824089.
@article{osti_1824089,
title = {Buffer-free process cycle for CO2 sequestration and carbonate production from brine waste streams with high salinity},
author = {Sant, Gaurav and Wei, Zongsu and Wang, Bu and La Plante, Erika Callagon and Simonetti, Dante A.},
abstractNote = {A method includes: (1) using a chelating agent, extracting divalent ions from a brine solution as complexes of the chelating agent and the divalent ions; (2) using a weak acid, regenerating the chelating agent and producing a divalent ion salt solution; and (3) introducing carbon dioxide to the divalent ion salt solution to induce precipitation of the divalent ions as a carbonate salt. Another method includes: (1) combining water with carbon dioxide to produce a carbon dioxide solution; (2) introducing an ion exchanger to the carbon dioxide solution to induce exchange of alkali metal cations included in the ion exchanger with protons included in the carbon dioxide solution and to produce a bicarbonate salt solution of the alkali metal cations; and (3) introducing a brine solution to the bicarbonate salt solution to induce precipitation of divalent ions from the brine solution as a carbonate salt.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2021},
month = {6}
}
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