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利用NaCl-MnO2对天然沸石进行改性,通过扫描电镜(SEM)表征沸石的微观特征,用原子吸收光谱法分析改性沸石对水中Cu2+的吸附性能及影响因素,结果表明:改性沸石表面疏散,负载了一层均匀的二氧化锰涂层,其吸附能力增强;在溶液pH=9.0及25℃下,吸附时间3h,改性沸石用量为1.285g/L时,对质量浓度为50mg/L的Cu2+的去除率为98.9%。
The natural zeolite was modified by NaCl-MnO2, the microscopic characteristics of the zeolite were characterized by scanning electron microscopy (SEM), and the adsorption properties and influencing factors of Cu2 + by modified zeolite were analyzed by atomic absorption spectrometry. The results showed that the surface of the modified zeolite was evacuated , And a uniform manganese dioxide coating was loaded on the surface of the coating. The adsorption capacity of the coating was enhanced. When the pH was 9.0 and 25 ℃, the adsorption time was 3h and the amount of modified zeolite was 1.285g / L, the mass concentration of 50mg / L Cu2 + removal rate of 98.9%.