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Applied Research of Nickel Plating Waste as the Source of Nickel

Author: XuBo
Tutor: PanZhanChang
School: Guangdong University of Technology
Course: Chemical Engineering and Technology
Keywords: Nickel-plated Liquid waste Activation solution Composite plating Load Catalytic
CLC: X781.1
Type: Master's thesis
Year: 2011
Downloads: 77
Quote: 1
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Abstract


This paper studies the nickel plating wastewater as a nickel source application, through the following three methods discussed its application performance. Nickel-plated waste preparation of nickel phosphorus - ferrite particles composite coatings: nickel plating wastewater as a nickel source formulated into renewable electroless nickel plating solution and the best parameters are optimized; according to the the vortex principle of design of a chemical compound plated devices, and the use of renewable chemical nickel plating solution with titanium dioxide powder formulated chemical compound nickel plating solution to test its performance, and discuss their works; renewable chemical nickel plating solution with ferrite composite successfully prepared using vortex forced flow fixtures nickel phosphorus - ferrite particles composite coatings, and scanning electron microscope (SEM), spectroscopy (EDS) of the coatings were characterized. The results show that: the regeneration electroless nickel plating solution the ability to plating, its optimum plating conditions: chemical nickel plating wastewater with the electroless nickel plating wastewater volume ratio of 5:1, and the pH of the plating 10, and the temperature was 80 ° C; the nickel phosphorus - ferrite composite coating structure dense, evenly dispersed ferrite coating inside; utilization of renewable chemical nickel plating solution nickel source: 54.91%. Nickel plating waste liquid preparation of supported nickel-phosphorous alloy particles and their catalytic performance: nickel plating technology nickel activation and renewable chemistry in the SiO2, diatomite prepared supported nickel - phosphorus alloy particles. Load-based activation process nickel electroless plating nickel ion adsorption properties of nickel liquid waste; final sample prepared using SEM, EDS, XRD analysis of the sample surface morphology of the coating composition, crystal structure; using sample catalytic properties were studied by cyclic voltammetry and differential thermal analysis. The results show that: the nickel activation can be provided in the substrate surface to form the catalytically active centers, the optimum adsorption conditions were as follows: the silica is used in an amount of 600g / l, the adsorption time of 2.5h; celite an amount of 200g / l, and the adsorption time of 2h; sample performance of the thermal decomposition of the catalytic oxidation of ethanol and ammonium perchlorate (AP); optimum adsorption conditions, chemical nickel plating wastewater nickel source utilization: 78.4% silica, diatomaceous earth as 79.51%; renewable chemical nickel plating solution nickel source utilization: 57.5% silica, diatomaceous earth as 65.7%. Nickel plating waste liquid preparation of nickel-based chemical plated nickel activation solution: electroless nickel waste as a source of the nickel, nickel ion adsorption by aluminosilicate gel, Restore and molding, the preparation of a nickel-based activation solution, and experiments to verify the performance of their activation schematic discussed the preparation process of the activation solution; orthogonal experiment to examine the factors of the process of preparation of the activated liquid film formation and deposition rate of activation solution, optimized influencing factors; Finally, under optimal conditions The utilization of waste liquid nickel. The results show that: nickel electroplating wastewater can be used as the source of the nickel used for the preparation of the nickel-based activation solution; biggest impact factors affect the activation of the liquid film-forming properties and deposition rate is the ratio of the concentration of the film-forming agent, sodium silicate and aluminum chloride concentration ratio, optimized conditions: film-forming agent ratio is 2:1, the ratio of the sodium silicate and aluminum chloride is 15:1, the nickel plating wastewater does not require dilution, the original solution can be used directly; nickel electroplating waste the nickel source utilization rate of 33.2%.

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CLC: > Environmental science, safety science > Processing and comprehensive utilization of waste > Chemical industry,waste disposal and comprehensive utilization > Inorganic Chemical Industry > Electroplating,electrolysis industry
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