Thermodynamics study on the generation of electricity via CO2-mineralization cell

Abstract

Carbon dioxide (CO 2 ) is the principal cause of the greenhouse effect which is due to the excessive consumption of fossil fuels. Several methods have been proposed for reducing CO 2 emissions in the atmosphere but none has been completely successful. Recently, a novel technique called the CO 2 -mineralization cell (CMC) technique, based on CO 2 mineralization and utilization (CMU), was proposed by our group. This converts chemical energy from the CO 2 mineralization reaction into electricity while also producing highly valuable chemical products. However, some confusion and doubts still exist about its theoretical feasibility. Herein, a thermodynamics study and analysis of the CMC were conducted and the feasibility of generating electricity by CO 2 -mineralization reaction confirmed theoretically. The corresponding theoretical electromotive force and the maximum electric energy production per 1t carbon dioxide completely consumed under standard conditions were also calculated, and their influential factors fully discussed.

Effect of [Na+]/[Li+] concentration ratios in brines on lithium carbonate production through membrane electrolysis

“…Hydroxyl anions can be easily produced via water reduction, and, with the acceleration in the quest for developing CO 2 capture and storage alternatives, several proposals have been put forward. 31,[33][34][35][36][37][38][39][40] Sorimachi proposed the use of a NaOH and CaCl 2 solution, and the subsequent electrochemical regeneration of NaOH. 41 Llanos et al achieved a 93% current efficiency for CO 2 xation with simultaneous hypochlorite production.…”