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Raw water contains trace amounts of natural organic matter in drinking water chlorination process will be the formation of chlorinated organics , called disinfection byproducts ( DBPs ) , monochloroacetic acid is the main disinfection byproducts one of the categories . Fe-Si Mg - Al composite material is a physical mixture of particles of Fe-Si alloys and Mg-Al alloy particles , preliminary studies have confirmed that the material having good Trace chlorinated organics degradation effect . In this thesis, trichloroacetic acid ( TCAA ) representatives, self-developed System of Fe - Si Mg - Al composite materials for disinfection by-products of degradation effects and mechanism of action . In this paper, ion chromatography Determination of Trace TCAA , and to achieve the simultaneous determination of TCAA and its degradation products . By measuring the ratio of the type of material under the reaction conditions of the initial concentration , the stirring speed , temperature, etc. TCAA concentration changes over time , investigated the influence factors of Fe - Si Mg - Al composite material degradation TCAA inferred , based on the degradation reaction mechanism , and deduced degradation kinetics . Studies have shown that Fe - Si Mg - Al composite materials by means of the coupling interaction between the Fe-Si alloy particles and Mg-Al alloy particles restore degraded TCAA , and the TCAA to experience dechlorination reaction mechanism . The study found that the different solid-liquid ratio , composites of different particle size , different stirring speeds and different atmosphere have an impact on the degradation rate of the TCAA . Kinetic studies found in the lower concentration of TCAA conditions , degradation of rendering first-order kinetics , and when the initial concentration is high , the reaction series level 0-1 , the projected level degradation activation energy was 26.40kJ / mol .
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