CAJ | 학술논문

　　氧化铝工业中产生的赤泥不仅量大而且污染环境，为探讨赤泥的资源化途径，文中以拜耳法生产氧化铝产生的赤泥为原料，通过焙烧的方法将其改性，并应用于含铬废水中Cr（Ⅵ）的吸附，探索赤泥的改性温度、粒径、投加量、反应时间和废水pH对改性赤泥吸附Cr （Ⅵ）的影响及其吸附机理。实验结果表明，焙烧温度为800℃时改性赤泥对Cr（Ⅵ）有较好的吸附效果；当800℃改性赤泥投加量为100 g/L，反应180 min，pH＝9时对Cr（Ⅵ）去除率达到97.63％。通过XRD和FTIR分析表明：改性赤泥去除Cr（Ⅵ）的机理以静电吸附为主。
　　양화려공업중산생적적니불부량대이차오염배경，위탐토적니적자원화도경，문중이배이법생산양화려산생적적니위원료，통과배소적방법장기개성，병응용우함락폐수중Cr（Ⅵ）적흡부，탐색적니적개성온도、립경、투가량、반응시간화폐수pH대개성적니흡부Cr （Ⅵ）적영향급기흡부궤리。실험결과표명，배소온도위800℃시개성적니대Cr（Ⅵ）유교호적흡부효과；당800℃개성적니투가량위100 g/L，반응180 min，pH＝9시대Cr（Ⅵ）거제솔체도97.63％。통과XRD화FTIR분석표명：개성적니거제Cr（Ⅵ）적궤리이정전흡부위주。
Red mud ( RM) produced by Alumina industry not only has a large quantity but also pol-lutes the environment .In order to explore the reusing of RM by the Bayer process , it was modified by calcination process and then used for removal of hexavalent chromium from the industrial effluent . The influence of calcinating temperature , particle size , adsorbent dose , contact time and pH on the adsorption and related mechanism were studiedd .The results indicated that RM calcinated at 800℃had a good adsorption of Cr (Ⅵ) .When the modified red mud dose in 100 g/L, contact time in 180 min and pH at 9 , the removal of Cr (Ⅵ) was 97.63%.By the XRD and FT-IR analysis , it was conclude that hexavalent chromium adsorption by modified red mud mainly depended on electrostatic forces.