【摘要】 利用比表面分析仪、扫描电镜和红外光谱仪对活性炭纤维(ACFs)的性能进行表征。选择一定浓度的六价铬[Cr(Ⅵ)]溶液进行吸附研究,考察接触时间、溶液pH值以及溶液中Cr(Ⅵ)的初始质量浓度对吸附行为的影响。结果表明,最佳接触时间为125 min;Cr(Ⅵ)的去除率随着pH值的减小而增大,当pH=2.0时达到最大;Cr(Ⅵ)的吸附量随着Cr(Ⅵ)初始质量浓度的增加而增大,而去除率随着Cr(Ⅵ)初始质量浓度的增加而减小。此外,对材料的吸附机制进行了简要的分析。更多还原

【Abstract】 The properties of ACFs were characterized by BET specific surface area analyser,scanning electron microscopy and FTIR.The research was carried out with low concentration Cr(Ⅵ) as adsorbate and effects of contact time,solution pH and initial concentration of Cr(Ⅵ) on adsorption ability were examined.The results show that optical contact time is 125min;the removal ratio of Cr(Ⅵ) increases with the decrease of pH,and the removal ratio reaches to maximum when pH is 2.0;the adsorption capacity of Cr(Ⅵ) increases with increase of initial Cr(Ⅵ) concentration,but the removal ratio decreases with the initial concentration increasing.In addition,adsorption mechanism of ACFs was simple discussed.更多还原