环丙沙星调控制备γ-Al2O3/SiO2及吸附机制研究
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周俊, 方继敏, 方鉥, 廖鑫
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Preparation of γ-Al2O3/SiO2 controlled by ciprofloxacin and study on its adsorption mechanism
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Jun ZHOU, Jimin FANG, Shu FANG, Xin LIAO
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表5 所制备吸附剂表面络合平衡常数
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Table 5 Surface complexation equilibrium constant of the adsorbent
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| 样品 | lgKa1 | lgKa2 | Nt /（mol·g-1） | pHzpc |
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| γ-Al2O3/SiO2-0 | 5.25 | -7.60 | 3.93×10-4 | 6.425 | | γ-Al2O3/SiO2-0.2 | 4.83 | -8.52 | 5.61×10-4 | 6.675 | | γ-Al2O3/SiO2-0.6 | 5.70 | -9.29 | 6.68×10-4 | 7.495 | | γ-Al2O3/SiO2-0.8 | 5.06 | -8.81 | 4.18×10-4 | 6.935 | | CIP/γ-Al2O3/SiO2-1 | 6.46 | -9.00 | 7.48×10-4 | 7.730 | | CIP/γ-Al2O3/SiO2-3 | 8.36 | -9.28 | 5.02×10-4 | 8.820 | | CIP/γ-Al2O3/SiO2-5 | 8.95 | -9.76 | 5.36×10-4 | 9.355 |
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