Study On Preparation Of Nano Fe-Co Alloy And Its Performance In The Degradation With Class-fenton Technology

This thesis explored a new-type catalyst with catalytic properties──The nanoFe-Co alloy and its application in catalytic degradation of acrylic fiber wastewater, thecatalytic performance of nano Fe-Co alloy was investigated.In recent years, with the development of Fe0catalytic research, polymetallicsystem that it was formed by load one or more other metal on the surface of Fe0was ahotspot in the class-Fenton technology. According to the characteristics of metallic Feand Co, the bimetallic system of nano Fe-Co alloy which was prepared by liquid phasereduction, the effect of process conditions on the samples was research by methods ofscanning electron microscopy(SEM), X-ray energy spectrum(EDS), X-raydiffraction(XRD), specific surface area(BET), photoelectron spectroscopy(XPS),particle size analysis. The optimized conditions as follows: the reactant concentration of0.5mol/L, the reduction temperature of50℃, the reduction time of20min, the reductionconcentration of30g/L, the grain size and the catalytic properties of the sample wasoptimal at this point.In this thesis, the catalytic characteristics of nano Fe-Co alloy were studied by itsapplication in catalytic degradation of acrylic fiber wastewater. The optimizedconditions as follows: the initial pH was2, M(alloy/H2O2) was6, alloy dosage was2.868g/L, the reaction time was10min, it has the optimal effect that COD removal rateof65.5%. Treated effluent of COD was89.6mg/L, TN was102.8mg/L, ammonianitrogen was64.2mg/L, it reached the integrated wastewater discharge standard(GB8978-1996) the level of emission standards. The degradation mechanism of theorganic matter in wastewater was studied by ultraviolet absorption spectrum, the threedimensional fluorescence and GC/MS. Experiments confirmed that this paper explored of nano-Fe-Co alloy was a kind ofhigh speed and efficient class-Fenton catalysts, and successfully applied to the depth ofacrylic fiber wastewater treatment. The bimetallic system provided experimental basisand theoretical guidance for advanced oxidation technology to become efficient,economical and environmentally friendly technologies of wastewater treatment andapplication in the future to realize industrialization, it had important guidingsignificance.