Research Article
Effect of Aging on the Adsorption of Tetracycline by Humic Acid: Insight into the Morphology and Chemical Composition
Figure 2
(a) Effect of contact time on the adsorption of TC in which the initial concentration was 20 mg/L (insert is the removal efficiency of TC under different contact time); (b) ratio of qt to qe under different contact time; (c) ratio of qt between two different adsorbents; (d) the parameters of different models (model 1: pseudo-second-order model; model 2: Weber and Morris intraparticle diffusion model; model 3: Freundlich model).
| (a) |
| (b) |
| (c) |
| (d) |