超声波辅助NaCl-MnO2改性沸石及其吸附性能

摘要

The natural zeolite was modified by NaCl-MnO2 assisted by ultrasonic.The microscopic features of the zeolite were characterized by scanning electron microscope.The adsorption performances and the influencing factor of Fe3+ in wastewater were investigated.The results showed that a layer of manganese dioxide coating was formed on the modified zeolite surface,which improves the adsorption capacity.When the pH is 5.0,the adsorption time is 80 min and dosage of modified-zeolite is 4 g/L,the removal rate of Fe3+in water(100 mg/L)by modified zeolite could be up to 98.1％ at the normal temperature.%在超声波辅助下,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,研究改性沸石对水中Fe3+的吸附性能及影响因素,结果表明:改性沸石表面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=5及常温下,吸附时间80min,改性沸石用量为4g/L时,对质量浓度为100mg/L的Fe3+的去除率为98.1％.