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| Preparation, characterization and adsorption application of cerium(Ⅲ)/fly ash composite materials |
| Received:December 27, 2017 |
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| KeyWord:fly ash;composite adsorbent;preparation;reactive brilliant red RBR KD-8B;adsorption |
| Author Name | Affiliation | E-mail | | YIN Hai-yang | College of Chemical & Environmental Science, Inner Mongolia Normal University, Inner Mongolia Key Laboratory of Environmental Chemistry, Hohhot 010022, China | | | LI Bei-gang | College of Chemical & Environmental Science, Inner Mongolia Normal University, Inner Mongolia Key Laboratory of Environmental Chemistry, Hohhot 010022, China | libg@imnu.edu.cn |
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| Abstract: |
| A novel modified Ce (Ⅲ)/fly ash (FA) reactive brilliant red KD-8B (RBR KD-8B) removal adsorbent was obtained using the solution reaction method. The means of the X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscope (SEM), Energy Disperse Spectroscopy (EDS), and N2 adsorption-desorption were used to analyze the physical and chemical properties of the materials. The effects of the preparation conditions and process parameters of the adsorbent on the removal of RBR KD-8B from water by the Ce (Ⅲ)/FA were studied. The results showed that the prepared Ce (Ⅲ)/FA has a good adsorption performance for RBR KD-8B when the mass ratio of FA, HCl, and Ce (NO3)3·6H2O was 25:5.4:1 and preparation time was 30 min at 25℃. The adsorption capacity of Ce (Ⅲ)/FA on RBR KD-8B reached 379.9 mg·g-1, 6.12 times higher than that of FA, when the initial RBR KD-8B mass concentration was 2000 mg·L-1, the pH value was 6, the adsorption time was 90 min, and the dosage was 5 g·L-1. The characterization shows that the surface morphology of Ce (Ⅲ)/FA had obviously changed compared with that of FA, and the Ce (Ⅲ) ions were successfully loaded onto the FA surface. The adsorption capacity of Ce (Ⅲ)/FA for RBR KD-8B was significantly enhanced. |
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