【摘要】：對(duì)鋯改性顆粒活性氧化鋁(Zr-GAA)的改性條件進(jìn)行了研究,并對(duì)Zr-GAA的除氟性能進(jìn)行了評(píng)價(jià)。結(jié)果表明,制備Zr-GAA鋯的最佳質(zhì)量濃度為2.0 g/L,此時(shí)鋯的負(fù)載量為32.58 mg/g;Zr-GAA的吸附平衡時(shí)間為180min,吸附速率比GAA提高25%以上;Zr-GAA在低濃度下對(duì)氟離子吸附量提高顯著,在氟離子的平衡濃度為1.0mg/L時(shí),其吸附量為GAA的5.25倍;Zr-GAA的適用p H范圍為4.5~9.7,較GAA明顯增大;SO2-4和HCO-3對(duì)ZrGAA吸附量的影響較大。
[Abstract]:The modification conditions of zirconium modified granular active alumina (Zr-GAA) were studied and the defluorination performance of Zr-GAA was evaluated. The results showed that the optimum mass concentration of Zr-GAA zirconium was 2.0 g / L, and the adsorption equilibrium time of zirconium loading was 32.58 mg/g;Zr-GAA, and the adsorption rate was more than 25% higher than that of GAA. When the equilibrium concentration of fluorine ion is 1.0mg/L, the suitable pH range of GAA is 5.25 times that of Zr-GAA, which is significantly larger than that of GAA and so _ 2-4 and HCO-3 on the adsorption capacity of ZrGAA.
【作者單位】： 北京化工大學(xué)化學(xué)工程學(xué)院;
【分類(lèi)號(hào)】：TQ424.2;R123.6

【共引文獻(xiàn)】

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