Study on the preparation and adsorption properties of heavy metal chelating adsorbent
The chelating adsorption material HDTC was prepared by using CS2、C3H5ClO and other raw materials to explore the adsorption performance of the adsorbent for Zn2+and Pb2+ions in wastewater.In this paper,SEM,BET and FTIR were used to analyze HDTC.Compared with traditional adsorbents such as activated carbon,it has better pore structure,and its pore size and specific area reach 28.0892 nm and 36.87 m2/g.At the same time,the adsorption effect of HDTC on Zn2+and Pb2+under different temperature and pH conditions was investigated.The results showed that the saturated adsorption capacities of HDTC for Zn2+and Pb2+were 368.9 and 435.3 mg/g,respectively,under the conditions of pH 5～6 and temperature 45 ℃.The adsorption process of Zn2+and Pb2+satisfied the second-order kinetic equation and Langmuir adsorption isotherm model.
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维普
