Iqbal, Muhammad Ibrahim Abbas, Syed Asad Mehmood, Asad Kim, Seong-Hoon Ha, Heung Yong Jung, Kwang-Deog 2024-01-20T00:34:30Z 2024-01-20T00:34:30Z 2021-09-04 2017-09 0013-4651 https://pubs.kist.re.kr/handle/201004/122377 If an electrolysis system can produce both HCl for Ca extraction and NaOH for carbonation with low energy consumption, mineralization of waste inorganics becomes an economically feasible approach to mitigate environmental CO2 emissions. For this purpose, NaCl electrolysis system with three compartments was fabricated: 1) an anode compartment for hydrogen oxidation, 2) a cathode compartment for hydrogen evolution, and (3) a central compartment between the anionic and cationic exchange membrane where the NaCl solution is introduced. Both 1 M NaOH and HCl were successfully co-produced with a caustic efficiency of 83.6% in the three-compartment cell from a 25 wt% NaCl solution at 1.5 V. Under those conditions, the equilibrium cell potential was 0.83 V. The current density under the optimized operating conditions was 40 mA cm(geo)(-2), and the overpotentials of the cathode (1.0 mg Pt cm(-2)) and anode (0.2 mg Pt cm(-2)) were 0.09 V and 0.05 V, respectively. (c) 2017 The Electrochemical Society. All rights reserved. English ELECTROCHEMICAL SOC INC Performance of Electrochemical Cell to Produce Acid and Alkali for nCaCO(3) Production Using Waste Inorganics Article 10.1149/2.0221713jes 1 JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.164, no.13, pp.F1286 - F1293 JOURNAL OF THE ELECTROCHEMICAL SOCIETY 164 13 F1286 F1293 N scie scopus 000418409800149 2-s2.0-85034596768 Electrochemistry Materials Science, Coatings & Films Electrochemistry Materials Science Article CAPTURE CO2 NaCl electrolysis HER HOR