公开(公告)号：US20210188671A1

公开(公告)日：2021-06-24

申请号：US17187252

申请日：2021-02-26

申请人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

发明人： Gaurav Sant ,  Zongsu Wei ,  Bu Wang ,  Erika Callagon La Plante ,  Dante Simonetti

IPC分类号： C02F1/68 ,  C01D7/12 ,  C01D7/16 ,  C02F1/44

摘要： 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.

公开(公告)号：US20190177220A1

公开(公告)日：2019-06-13

申请号：US16147261

申请日：2018-09-28

申请人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA ,  ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY

发明人： Gaurav Sant ,  Laurent G. Pilon ,  Bu Wang ,  Narayanan Neithalath ,  Zhenhua Wei ,  Benjamin Young ,  Gabriel D. Falzone

IPC分类号： C04B7/19 ,  C04B7/46 ,  C04B7/38 ,  C04B7/36 ,  C04B9/20 ,  C04B40/02

摘要： A manufacturing process of a concrete product includes: (1) extracting calcium from solids as portlandite; (2) forming a cementitious slurry including the portlandite; (3) shaping the cementitious slurry into a structural component; and (4) exposing the structural component to carbon dioxide sourced from a flue gas stream, thereby forming the concrete product.