Method for continuous electrolytic reduction of three-valence europium
A technology of trivalent europium and trivalent europium ions, applied in the electrolysis process, electrolysis components, cells, etc., can solve the problems of electrolysis instability, consumption of zinc powder, and production of zinc-containing wastewater, and achieve good reduction effect and stable electrolysis Effect
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Embodiment 1
[0011] The single rectangular diaphragm electrolyzer is composed of an anode chamber and a cathode chamber. The volume of the anode chamber and the cathode chamber is 20L, and the middle is separated by an ion exchange membrane of model AM-203. The anode is made of titanium-based metal plate coated with ruthenium and iridium. The cathode adopts a metal titanium plate; the cathode chambers of the four electrolytic cells are connected in series, and the anode chambers are not connected. The anolyte is rare earth material liquid, the concentration of rare earth is 0.015mol / L, H + The concentration is 0.01mol / L; the catholyte is a rare earth chloride solution, the concentration of trivalent europium ions is 1.57mol / L, and the concentration of H + The concentration is 0.0012mol / L. According to the anolyte flow rate of 0.1L / min, according to the catholyte flow rate of 0.6L / min, stay in a single anode chamber for more than 0.5 hours, respectively add the anode chamber and cathode ch...
Embodiment 2
[0013] Electrolyzer is the same as embodiment 1, totally six electrolyzers, and the cell volume is identical.
[0014] The anolyte is rare earth material liquid, the concentration of rare earth is 0.19mol / L, H + Concentration 0.5mol / L; catholyte rare earth chloride solution, trivalent europium ion concentration 0.13mol / L, H + The concentration is 0.23mol / L.
[0015] Operation is with embodiment 1.
[0016] The anolyte flow rate is 0.1L / min, the catholyte flow rate is 0.5L / min, and the residence time in a single anode chamber is more than 0.6 hours, respectively added to the anode chamber and cathode chamber of the first electrolytic cell, and the current density is 800A / m 2 ;
[0017] Anolyte flow rate 0.2L / min is added to the anode chamber of the second electrolytic cell, and the current density is 700A / m 2 ;
[0018] The anolyte flow rate is 0.3L / min and is added to the anode chamber of the third electrolytic cell, and the current density is 600A / m 2 ;
[0019] Anolyt...
Embodiment 3
[0024] The rectangular diaphragm electrolyzer is composed of an anode chamber and a cathode chamber, a total of six electrolyzers, and the volume of the anode chamber and the cathode chamber is 30L. The anode chamber and the cathode chamber are separated by an ion-exchange membrane of model UTX-UIF-A, the anode is made of titanium-based coated ruthenium and iridium metal mesh, and the cathode is made of metal titanium mesh.
[0025] The anolyte is rare earth material liquid, the concentration of rare earth is 1.8mol / L, H + The concentration is 0.5mol / L; the catholyte is a rare earth chloride solution, the concentration of trivalent europium ions is 0.9mol / L, and the concentration of H + The concentration is 1.58mol / L.
[0026] Operation is with embodiment 1.
[0027] The anolyte flow rate is 0.1L / min, the catholyte flow rate is 0.25L / min, and the residence time in a single anode chamber is about 2 hours, respectively added to the anode chamber and cathode chamber of the firs...
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