| 尹海洋,李北罡.Ce负载粉煤灰复合材料的制备、表征及其吸附应用[J].农业环境科学学报,2018,37(9):2005-2013. |
| Ce负载粉煤灰复合材料的制备、表征及其吸附应用 |
| Preparation, characterization and adsorption application of cerium(Ⅲ)/fly ash composite materials |
| 投稿时间：2017-12-27 |
| DOI：10.11654/jaes.2017-1763 |
| 中文关键词: 粉煤灰 复合吸附剂 制备 活性艳红RBR KD-8B 吸附 |
| 英文关键词: fly ash composite adsorbent preparation reactive brilliant red RBR KD-8B adsorption |
| 基金项目:国家自然科学基金项目（21167011）；内蒙古自治区自然科学基金项目（2015MS0226）；内蒙古师范大学研究生科研创新基金项目（CXJJS17084） |
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| 摘要点击次数: 1904 |
| 全文下载次数: 1966 |
| 中文摘要: |
| 将粉煤灰（FA）通过盐酸改性得到酸改性粉煤灰并作为载体，以Ce离子为活性成分，通过溶液反应法制备了一种新型Ce离子负载FA复合吸附材料[Ce（Ⅲ）/FA]，采用X射线衍射仪（XRD）、扫描电子显微镜（SEM）、能谱仪（EDS）、红外光谱仪（FT-IR）及N2吸附脱附技术进行表征，研究了吸附剂的制备条件和工艺参数对Ce（Ⅲ）/FA去除水中活性艳红RBR KD-8B染料的影响。结果表明：当在室温下所取FA、HCl、Ce（NO3）3·6H2O质量比为25：5.4：1，制备时间为30 min，所得Ce（Ⅲ）/FA对活性艳红RBR KD-8B具有很好的去除效果；在活性艳红RBR KD-8B模拟废水初始质量浓度为2000 mg·L-1，pH值为6，投加量5 g·L-1，吸附时间90 min，吸附温度25℃时，Ce（Ⅲ）/FA对活性艳红RBR KD-8B的吸附量可达379.9 mg·g-1，比FA增大了6.12倍。表征结果说明：FA经酸改性-掺杂Ce元素后其表面形貌发生了明显的变化，且Ce（Ⅲ）以离子形式成功负载于FA上，所制得的复合吸附材料Ce（Ⅲ）/FA对活性艳红RBR KD-8B的吸附性能得到显著提升。 |
| 英文摘要: |
| 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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