不同结构铝氧化物对磷的吸附特征
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李敬,刘晓月,邱千峰,李苓,曹晓燕
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Phosphorus Sorption Characteristics on Aluminum Oxides with Different Structures
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LI Jing,LIU Xiaoyue,QIU Qianfeng,LI Ling,CAO Xiaoyan
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表3 不同离子强度介质中磷酸盐在γ-Al2O3和无定形氧化铝上的等温吸附参数
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Table 3 Isothermal sorption parameters of phosphates on γ-Al2O3 and amorphous alumina
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| Sorbent | I/(mol·L-1) | Freundlich | Langmuir | | KF/(mg·g-1) (L·mg-1)1/n | n | r2 | Qm/(mg·g-1) | KL/(L·mg-1) | r2 | | γ-Al2O3 | 0.7 | 12.39 | 4.52 | 0.942 | 14.93 | 5.288 | 0.848 | | 0.1 | 13.20 | 6.08 | 0.912 | 13.47 | 18.29 | 0.702 | | 0.01 | 14.37 | 7.20 | 0.896 | 14.28 | 27.90 | 0.485 | | Amorphous alumina | 0.7 | 26.28 | 3.27 | 0.933 | 34.70 | 3.828 | 0.838 | | 0.1 | 27.66 | 4.09 | 0.933 | 34.60 | 4.888 | 0.820 | | 0.01 | 28.36 | 3.24 | 0.907 | 43.22 | 2.046 | 0.817 |
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