| 喷雾干燥法制备氧化镁材料及其吸附性能 |
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| 引用本文： | 杨斌,苏琪,杨高玲,邝梦杰,张丽娜,石安红,刘柏雄.喷雾干燥法制备氧化镁材料及其吸附性能[J].化工学报,2018,69(7):3068-3075. |
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| 作者姓名： | 杨斌 苏琪 杨高玲 邝梦杰 张丽娜 石安红 刘柏雄 |
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| 作者单位： | 1.江西理工大学钨资源高效开发及应用技术教育部工程研究中心, 江西 赣州 341000;2.江西理工大学材料科学与工程学院, 江西 赣州 341000;3.江西理工大学应用科学学院, 江西 赣州 341000 |
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| 基金项目： | 国家自然科学基金项目（51664023）。 |
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| 摘 要： | 采用喷雾干燥结合热处理法制备花瓣状的MgO，通过对热处理温度的调整，实现MgO表面形貌的调控。研究了所制备MgO粉末作为吸附剂对刚果红的吸附性能，当热处理温度为400℃，得到花瓣状的MgO纳米结构，比表面积达到140.5 m2·g-1，且对刚果红溶液的饱和吸附量约为1480 mg·g-1。它们对刚果红的吸附能力比报道的其他花瓣状结构的金属氧化物要高。此外，对其吸附模型、吸附动力学以及吸附机制进行探究，表明吸附过程符合Langmuir吸附模型，所制备样品对刚果红溶液的吸附过程可以由准二级动力学来描述。所制备的花瓣状MgO其高效的吸附性能，使其成为非常有前景的吸附剂用于去除污水中的刚果红染料。
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| 关 键 词： | 喷雾干燥 MgO 吸附剂 纳米结构 污水 |
| 收稿时间： | 2017-10-19 |
| 修稿时间： | 2018-02-24 |
Preparation and adsorption properties of magnesium oxide via spray drying |
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| YANG Bin,SU Qi,YANG Gaoling,KUANG Mengjie,ZHANG Lina,SHI Anhong,LIU Baixiong.Preparation and adsorption properties of magnesium oxide via spray drying[J].Journal of Chemical Industry and Engineering(China),2018,69(7):3068-3075. |
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| Authors: | YANG Bin SU Qi YANG Gaoling KUANG Mengjie ZHANG Lina SHI Anhong LIU Baixiong |
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| Affiliation: | 1.Engineering Research Center of High-efficiency Development and Application Technology of Tungsten Resources, Ganzhou 341000, Jiangxi, China;2.School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China;3.College of Applied Science, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China |
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| Abstract: | The flower-like MgO was synthesized by spray drying combined with heat treatment. The surface morphology of MgO was controlled by adjusting the heat treatment temperature. The adsorption properties of MgO powder as sorbent to Congo red were studied. When the heat treatment temperature was 400℃, a flower-like MgO nano structure was obtained. The specific surface area was 140.5 m2·g-1, and the saturated adsorption capacity of Congo red solution was about 1480 mg·g-1. Furthermore, the adsorption model, adsorption kinetics and adsorption mechanism were explored. The results show that the adsorption process accords with Langmuir adsorption model and the adsorption process of the sample to Congo red solution can be described by pseudo-second-order kinetics. The high uptake capability of the as-prepared flower-like MgO made it a potentially attractive adsorbent for the removal of Congo red from water. |
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| Keywords: | spray drying MgO sorbents nanostructure waste water |
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