N. Assi, A. Wang, C. J. MacRobbie, J.-P. Hickey, J. Z. Wen | 2026 | Separation and Purification Technology
DOI 10.1016/j.seppur.2025.135614Review state
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This paper details the selective extraction of metallic iron from JSC-1A lunar regolith simulant using molten salt electrolysis. The study reports an optimal yield of 83.47% and current efficiency of 79.65% at 1.5 V. The process involves electrolysis in molten CaCl2 at 900°C, with Fe2O3 and FeO reduction behaviors analyzed to understand reaction stages and crystal morphology changes. ctitle srctitlenorm srctype ssids alllist content oa subj subheadings suppl tomb volfirst volissue volumelist webpdf webpdfpagecount yearnav figure table e-component body mmlmath acknowledge affil appendices articletitle auth authfirstini authfull authkeywords authlast highlightsabst primabst ref 1383-5866 13835866 UNLIMITED CRKNHY2024 true 382 382 P1 Volume 382, Part 1 40 135614 135614 135614 20260226 26 February 2026 2026-02-26 2026 Research Papers article fla 2025 The Authors. Published by Elsevier B.V. HIGHYIELDSELECTIVEEXTRACTIONMETALIRONJSC1AUSINGMOLTENSALTELECTROLYSIS ASSI N 1 Introduction 2 Experimental methods 2.1 Materials 2.2 Two-electrode constant cell voltage electrolysis 2.3 Material characterization 3 Theoretical decomposition calculation 4 Results and discussion 4.1 Effect of reduction
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molten salt electrolysis
electrochemical
electrolysis
electrochemical
Decomposition voltage measurement
Electrochemical
3PIs schematic
Structural analysis
Electrolysis of JSC-1A in molten CaCl2
electrochemical
Electrochemical reduction of Fe2 O3 and FeO
electrochemical
SEM-EDS analysis of JSC-1A before electrolysis
microanalysis
SEM-EDS analysis of electrolytic products
microanalysis
temperature
900°C
electrolyte
molten CaCl2
voltage range
1.0 to 1.75 V
Decomposition voltage
Varies with Fe3+ concentration and overpotential
Three-phase interfaces
Schematic representation on the cathode surface
Iron production yield
83.47%
Current efficiency
79.65%
Electrolysis voltage
1.5 V