| As a kind of functional materials,adsorption materials have larger specific surface area,suitable pore structure and surface active sites,and have good adsorption capacity for adsorbents,and are widely used in wastewater treatment and gas treatment.Chloride ion is an important pollutant in wastewater,and its high content will cause harm to human body,animals and plants.The principle of adsorption and sedimentation can achieve better removal effect.This paper mainly studies adsorption catalytic materials from two aspects.One is to use high alkali lime-simulated flue gas neutralization method to remove chloride ions in wastewater,after the reaction of lime and sodium aluminate,and then the chloride ion is adsorbed and replaced,so as to achieve the effect of removing the chloride ion.The influence of different reaction conditions on the removal of chloride ions was also studied,and the reaction conditions.Second,the nano-magnesium oxide adsorbent was prepared by the improved sol-gel method and applied to the ammonia release and chlorine release reaction of ammonium chloride decomposition.The effects of different preparation time and different calcination temperature of nano-magnesium oxide on the decomposition of ammonium chloride to release ammonia and chlorine,as well as the effects of molar ratio and temperature were studied.The prepared nanomaterials were characterized and analyzed by XRD,SEM,TEM,BET and other characterization methods,and materials and process methods were further analyzed.The research shows chloride ion has obvious removal effect by high soda limesimulated flue gas neutralization method,and the highest removal rate is 64.01%.The reaction time was 14 h and the calcination temperature was 500 °C.The nanomagnesium oxide prepared under the experimental conditions had the largest specific surface area,more active sites,faster ammonia and chlorine release rates,and excellent adsorption performance. |
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