Application Of Revised Kinetic Model In Lead Pollution Control

In the treatment of lead pollution,it is necessary to analyze many factors in practical application,such as the influence of time on the removal rate of bivalent lead ions in sewage,the actual molecular structure model of adsorbent and so on.This paper adopts a variety of methods to solve these problems:1.For the removal of lead ions in aqueous solution,Citric-LDH material was synthesized first,and the material was characterized and analyzed by X-ray diffraction(XRD),field emission electron microscope scanning(SEM)and other advanced equipment.On the kinetics of batch experiments,first,for the most commonly used to first-order kinetics model and the proposed second-order kinetics model of multi-angle comparison and analysis,in the actual experiment and contrast after fitting effect,on the basis of pseudo second-order kinetics model,in view of the actual experimental data,make corresponding improvement and optimization,improved the face the actual situation of dynamic model fitting effect.2.After theoretical calculation of the structure of Citric-LDH,a relatively stable theoretical model of Citric-LDH was obtained.At the same time,in view of the theoretical model of citric acid water talc,through the use of principal component analysis,k-means clustering and hierarchical clustering analysis method in the process of theoretical calculation,the whole process of citric acid root space structure changes were analyzed,and found a different from the final result of the spatial structure of citric acid root,on the theory of computation provides a rich data in the future.3.Three kinds of iron oxide materials were synthesized and improved kinetic models were applied in the removal of lead ions by three kinds of iron oxide.The mechanism of iron oxide and the removal mechanism of lead ions by iron oxide were investigated and calculated by using X-ray diffraction pattern(XPS),hysteresis loop(VSM)and other instruments and other batch experiments.In the related experiment and calculation,the improvement of kinetic model to prove the lead ions adsorption dynamics process more in line with the pseudo first-order kinetic equation,the adsorption properties affected by pH and temperature and the intensity of ion has little impact on the entire process,at the same time,related thermodynamic experiment proved that the adsorption process is endothermic and spontaneous.Through the improvement of the kinetic model and the use of three clustering methods which played an important role in promoting the treatment of lead pollution.