Based On The Removal Of Heavy Metal Ions Of The New Functional Materials Design,Synthesis And Application

The resource of water is scarce in china.In recent years,it is polluted seriously with the development of in dustry,among which heavy metals because of its harmful,non-degradable,easy accumulation and other characteristics,seriously damage the balance of aquatic ecosystems,affecting aquatic organism to survive;Through the ecosystem of cycle,and finally accumulated in the human body,causing irreversible harm to the human body.Therefore,Therefore,it is urgent to remove heavy metals from wastewater.Resin is a kind of cheap,easy to obtain and good reusability,it can be used as adsorbent for sewage treatment.In this study,the grafting material D301-g-PGMA was obtained by constructing oxidation-reduction initiating system to graft the monomer GMA onto the of D301.Then,arginine,1,3-thiosemicarbazide and aminoguanidine hydrochloride were used to modify the grafted material,and three materials were successfully prepared,respectively.Three kinds of heavy metal ions?Cu?II?,Cd?II?and Pb?II??were adsorbed by three kinds of materials.The adsorption and reuse properties of three kinds of heavy metal ions were studied.In the preparation of TCH,Under the conditions of TCH dosage was 3.0 g,reaction temperature 353 K,stirring time 12 h,the ring-opening rate of the prepared TCHD301was 53%,the best TCHD301were prepared.At reaction temperature 298 K,pH of 7,time of 6 h,the adsorption capacity of TCHD301 towardes Pb?II?was 2.34 mmol·g^-1,and the adsorption kinetics of TCHD301 in the adsorption process followed the pseudo-second-order adsorption kinetics model.pH and temperature had a great influence on the adsorption capacity.Increasing the temperature will help to increase the maximum adsorption capacity,it shows that the adsorption process is endothermic.The adsorption behavior of TCHD301 towards Pb?II?was a typical Freundlich monolayer adsorption.Additionally,TCHD301 also had good reusability performance.In the preparation of Arg,Under the conditions of Arg dosage was 3.0 g,reaction temperature was 363 K,stirring time 10 h,the ring-opening rate of the prepared ArgD301 was 61%,the best ArgD301were prepared.At reaction temperature 298 K,pH of 2,time of 6 h,the adsorption capacity of ArgD301 to Cd?II?was 4 mmol·g^-1,and the adsorption kinetics of ArgD301 in the adsorption process followed the pseudo-second-order adsorption kinetics model.pH and temperature had a great influence on the adsorption capacity.Increasing the temperature will help increase the maximum adsorption capacity,it shows that the adsorption process is endothermic.The adsorption behavior of ArgD301 towards Cd?II?was a typical Freundlich monolayer adsorption.Additionally,ArgD301 also had good reusability performance.In the preparation of AG,Under the AG dosage was 1.5 g,reaction temperature was 363 K,stirring time 8 h,the ring-opening rate of the prepared AGD301was 88%,the best AGD301were prepared.At reaction temperature 298 K,pH of 2,time of 6.5 h,the adsorption capacity of ArgD301 to Cu?II?was 5.25 mmol·g^-1,and the adsorption kinetics of AGD301 in the adsorption process followed the pseudo-second-order adsorption kinetics model.pH and temperature had a great influence on the adsorption capacity.Increasing the temperature will help increase the maximum adsorption capacity,it shows that the adsorption process is endothermic.The adsorption behavior of AGD301 towards Cu?II?was a typical Freundlich monolayer adsorption.Additionally,AGD301 also had good reusability performance.