CuS改性活性炭的制备及其镉(Ⅱ)的吸附性能研究

Preparation of CuS Modified Activated Carbon and Study on Its Adsorption Properties of Cadmium(Ⅱ)

研究了CuS改性对活性炭的表面物理化学特性的影响和改性活性炭对镉(Ⅱ)的吸附性能。考查了不同铜源、不同浓度的Cu^(2+)对CuS改性活性炭性能的影响,分析表征其物理及化学性质,并对其吸附脱除镉的吸附容量进行了评价。结果表明:经CuS改性后的活性炭表面出现了大量CuS纳米颗粒物,增大了其比表面积,对Cd^(2+)的吸附效果明显增强;CuCl_(2)-①/AC对水中镉(Ⅱ)的吸附容量达到204.33 mg/g,比未改性活性炭对水中镉(Ⅱ)的吸附容量高出33.68 mg/g;Cu(NO_(3))_(2)-①/AC对水中镉(Ⅱ)的吸附容量达到195.30 mg/g,比未改性活性炭对水中镉(Ⅱ)的吸附容量高出24.65 mg/g。

The effects of CuS modification on the physical and chemical properties of activated carbon and the adsorption properties of modified activated carbon on cadmium(Ⅱ).The effects of different copper sources and different concentrations of Cu^(2+) on the properties of CuS modified activated carbon were investigated.The physical and chemical properties of CuS were investigated and characterized.The adsorption capacity was evaluated.The results show that many CuS nanoparticles appear on the surface of activated carbon after CuS modification,and their specific surface area is increased,and the adsorption effect on Cd^(2+) is obviously enhanced.The adsorption capacity of CuCl_(2)-①/AC to cadmium(Ⅱ)in water reached 204.33 mg/g,which was 33.68 mg/g higher than that of unmodified activated carbon on cadmium(Ⅱ)in water.Cu(NO_(3))_(2)-①/AC adsorption capacity of cadmium(Ⅱ)in water reached 195.30 mg/g,which was 24.65 mg/g higher than that of unmodified activated carbon on cadmium(Ⅱ)in water.