Theoretical Concept of Hydrogen Redox Electric Power Generation
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This paper demonstrates the electric power generator with both zero energy input and zero matter input and emission without violating the laws of thermodynamics. The hydrogen redox power generation system is a combined energy cycle consisting of the H2O reduction by the electrostatic induction hydrogen electrolytic cell for the synthesis of pure stoichiometric H2-O2 fuel and the H2 oxidation to H2O by the fuel cell. The electrostatic induction potential superposed hydrogen electrolytic cell works on the mechanism in which, on the theoretical base, power used is 17% of the total electrical energy required, while the remaining 83% can be provided by the electrostatic energy free of power. Part of the power delivered by the fuel cell is returned to the electrolytic cell, and the remainder represents the net power output. For high power applications, the cycle power efficiency defined as the ratio of net power output outside the generator to power delivered by the H2-O2 fuel cell is of primary interest. According to calculations using the operational data of alkaline water electrolysis in industries, the cycle power efficiencies exceed 70%.Keywords:
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The fate of thiocyanate ion during electrolytic silver recovery operations was studied. The experimental conditions for these laboratory tests were chosen to simulate conditions that might be applied in the recovery of silver in the photographic industry. A photographic fixer solution spiked with a one molar concentration of ammonium thiocyanate was electrolyzed in a commercially available rotating cathode silver recovery cell at a current density of 20 mA/cm2. A low concentration of hydrogen cyanide gas (generally <1 ppm)was detected in the headspace of the electrolytic cell during the constant current electrolysis. Analysis of the fixer solution after electrolysis also confirmed the presence of cyanide in the liquid phase.
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Alkaline water electrolysis
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In a number of electrolysis experiments the influence of mixtures of certain common metals, such as vanadium, magnesium, and aluminum, was investigated. A theory is developed for the action of those metals which have previously been shown to interfere with electrolysis in mercury cells
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A mathematical model of fluid field in rare earth electrolysis cell was built. The fluid field was calculated by SIMPLE method. On the basis of result, the electrolysis cell can be divided into four zones-between positive pole and negative pole, positive and electrolysis cell, down of pole and up of metal receiver, inner of metal receiver. The elements that influence the electric efficiency and operation of electrolysis cell were found through analysis of the calculate result.
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By explaining how to improve the productive efficiency of magnesium electrolysis,it was proposed that the productive efficiency of magnesium electrolysis can be effectively improved by means of some ways such as using a new electrolytic cell,reducing electrolytic temperature and strengthening insulation.
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Abstract The fate of thiocyanate ion during electrolytic silver recovery operations was studied. The experimental conditions for these laboratory tests were chosen to simulate conditions that might be applied in the recovery of silver in the photographic industry. A photographic fixer solution spiked with a one molar concentration of ammonium thiocyanate was electrolyzed in a commercially available rotating cathode silver recovery cell at a current density of 20 mA/cm2. A low concentration of hydrogen cyanide gas (generally <1 ppm)was detected in the headspace of the electrolytic cell during the constant current electrolysis. Analysis of the fixer solution after electrolysis also confirmed the presence of cyanide in the liquid phase. Keywords: hydrogen cyanide gasthiocyanate
Thiocyanate
Electrolytic cell
Ammonium thiocyanate
Ammonium iodide
Electrolysis of water
Hydrogen cyanide
Alkaline water electrolysis
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The properly dried CaCl2 salt is melted to the required temperature of electrolysis. Electrolysis of TiO2 electrode has been carried out at two different bath temperatures of 900 and 950°C keeping a constant cell voltage of 3 V. Also the electrolysis of TiO2 electrode is carried out at three different cell voltages of 2.8, 3.0 and 3.3 V at a bath temperature of 950°C. The current-time plot is drawn for each experiment. The resulting products after electrolysis are characterized by XRD and SEM. The effects of bath temperature and cell voltage of electrolysis on reduction process as well as on the characteristics of reduced products are studied.
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The copper recovered from jamesonite concentrate contains too much impurities like lead,sliver,antimony and bismuth,and can’t be refined with normal electrolysis process.The electrolysis process with CuNO3-HNO3 electrolyte can effectively separate copper and silver,and avoid anodic passivation.At last,it points out the problems of electrolysis,such as higher cell voltage and lower current efficiency.
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This paper describes a novel method of copper electrolysis, called the suspension electrolysis, which enables the electrolytic refining process of copper to operate continuously at very high rates with a small electrolytic cell.After a few preliminary experiments it was confirmed that the suspension electrode was applicable to copper electrolysis. A disk-like cell in which copper particles were suspended by vibration of the cell sepa. rately in a lower cathode chamber and an upper anode chamber divided with a diaphragm was made and studied. Data of the cell capable of the electrolysis at 50A/dm2, 2-3V, and at 80°C were presented.
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High Temperature Electrolysis
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The feasibility of zinc and manganese dioxide by diaphragm electrolysis from chloride solution in the same electrolytic cell have been studied.The main factors,such as current density,temperature,acidity etc.effecting on current efficiency have been discussed.The fairly good process conditions of zinc and chemical manganese dioxide by diaphragm electrolysis from chloride solution have been provided.
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