Generating Energy from Pollutants
A pollutant and energy technology, applied in water pollutants, energy and wastewater treatment, waste fuel, etc.
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Embodiment 1
[0077] Continuous deionization electrolysis technology (EDI)
[0078] (1) Experimental settings
[0079] EDI: The anode and cathode of EDI consist of two internal dimensions of 10×10×0.5cm 3 and 2cm wall thickness square Perspex frame made of cation exchange membrane ( AM-C, Hangzhou Iontech Environmental Technology CO., Ltd, China) separated. The material of the anode is platinum-coated titanium, the size is 4×4cm, and the thickness is 0.4mm (Shenzhen 3N Industrial Equipment CO., Ltd., China); the material of the cathode is iridium metal mixed oxide (Ir MMO) coated titanium, and The anodes are the same size. The EDI cell is sealed with two silicon gaskets and locked with screws.
[0080] The synthetic wastewater of EDI anode contains 0.25mol L -1 of (NH 4 ) 2 SO 4 . The supporting electrolyte for the EDI cathode is the same concentration of Na 2 SO 4 . All static experiments were performed at room temperature. Each group was run at 0.5, 1.0, 2.0, 3.0 and 4.0...
Embodiment 2
[0109] Solid Oxide Fuel Cell (SOFC)
[0110] experiment settings
[0111]Single cells with an anode-supported bilayer electrolyte membrane architecture were fabricated by tape casting, spray deposition, and subsequent high-temperature sintering. The fuel cells tested in this invention consist of NiO+(ZrO 2 ) 0.92 (Y 2 o 3 ) 0.08 (mass ratio: YSZ, NiO:YSZ=6:4) anode, YSZ electrolyte, Sm 0.2 Ce 0.8 o 1.9 (SDC) interlayer and Ba 0.5 Sr 0.5 co 0.8 Fe 0.2 o 3-δ (BSCF) cathode composition. BSCF and SDC powders were synthesized by combining EDTA-citric acid complexation method and sol-gel method. NiO (Chengdu Shudu Nano-Science Co., Ltd) and YSZ (Tosoh) were commercial products obtained from appropriate suppliers. Methods for preparing NiO+YSZ anode supports by tape casting are provided in the literature. 22 The YSZ|SDC double electrolyte layer was prepared by wet powder spraying technique. First, the YSZ suspension was sprayed onto the anode substrate using a sp...
Embodiment 3
[0127] EDI-SOFC system
[0128] (1) Net energy balance ratio
[0129] The net energy balance ratio is the ratio of energy input to output expressed in Equation 9, and is used to evaluate the efficiency of the fuel cell.
[0130]
[0131] where W out is CH 4 , NH 3 and H 2 enthalpy; r is the power conversion efficiency of SOFC, W in is energy consumption.
[0132] W in is calculated as follows:
[0133]
[0134]
[0135] Q=I×t=∫i×dt (Formula 12)
[0136] W out = m j ×ΔH (Equation 13)
[0137] in is voltage, Q is electric quantity, m j is the amount of fuel, and ΔH is the enthalpy.
[0138] (2) Current efficiency and fuel production
[0139] As the voltage increases, NH 4 + migrate and produce NH 3 and H 2 . Figure 7A and 7B Energy consumption and natural gas production are shown separately. NH 4 + The current efficiency of deionization drops almost linearly from 95% at 1.0V to 10% at 4.0V, while the H 2 The produced current efficiency i...
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