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以磺化改性的聚苯硫醚超细纤维为载体,通过液相还原法制备聚苯硫醚超细纤维负载零价铁。采用傅里叶变换红外光谱仪和扫描电子显微镜对其结构及形貌进行分析,结果表明零价铁成功负载于纤维表面。系统研究了溶液温度、溶液pH值以及初始溶液质量浓度对六价铬去除性能的影响,结果表明:当溶液温度为90℃、溶液pH值为2、初始溶液质量浓度为10 mg/L时,对六价铬的去除效果最佳。通过光电子能谱仪的分析和试验现象的观察发现:反应为氧化还原反应机制,且吸附过程符合准二级动力学吸附。
Sulfonated modified polyphenylene sulfide superfine fiber as carrier, by liquid reduction method to prepare polyphenylene sulfide microfiber load zero-valent iron. The structure and morphology of the fibers were analyzed by Fourier transform infrared spectroscopy and scanning electron microscopy. The results showed that the zero-valent iron was successfully loaded on the fiber surface. The effects of solution temperature, solution pH and initial solution mass concentration on hexavalent chromium removal were systematically studied. The results show that when the solution temperature is 90 ℃, the solution pH is 2 and the initial solution concentration is 10 mg / L, The removal of hexavalent chromium best. Through the analysis of the photoelectron spectrometer and the observation of the test phenomenon, it is found that the reaction is a redox reaction mechanism and the adsorption process accords with quasi-second-order kinetic adsorption.