膨润土类矿物脱汞吸附材料的制备及应用研究
The Research on the Preparation and Application of Bentonite Mineral as Mercury Removal and Adsorption Material
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摘要: 文章综述了近年来国内外文献中膨润土类矿物脱汞吸附材料的制备方法,分析了不同材料的脱汞机理和脱汞效果,并提出了膨润土类矿物脱汞吸附技术在汞污染控制中的应用前景,以期为烟气中单质汞、水体中二价汞的污染控制提供新的思路和方法。Abstract: The preparation methods of the bentonite mineral as the mercury removal and adsorption materials in domestic and foreign literatures in recent years were reviewed. The mercury removal mechanism and effects of different materials were analyzed. The application of the bentonite mineral as the mercury removal adsorption technology was proposed in order to provide new ideas and methods to control the elemental mercury in the flue gas and the divalent mercury in polluted water.
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Key words:
- Bentonite /
- Mercury Adsorption Materials /
- Preparation /
- Mercury Removal Mechanism
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表 1 制备方法
制备方法 改性剂 改性过程 备注 参考文献 浸渍法 KI 试剂 干燥箱内烘干 420~250 μm 膨润土 31 MnO2浸渍和FeCl3 烘干 烘干 膨润土 32 KI 100 ℃烘干 95 μm 膨润土 33 TiO2+丙三醇 300 ℃下油浴2 h 150 μm 膨润土 34 碘和淀粉 抽滤 100 μm 膨润土 25,35 玉米淀粉+ KMnO4 真空过滤,105 ℃下干燥 100μm 膨润土 24 KI 100 ℃干燥20 h 膨润土负载壳聚糖 30 木质素黄药树脂 298 K下老化20 h,338 K真空干燥12 h 研磨 26 煅烧 NH4Br 300 ℃煅烧2 h 标准筛 膨润土 28 微波照射 藻酸钠 700 W,60 s50 ℃烘箱干燥48 h 膨润土 29 物理挤压 飞灰 直径约1 mm,长度约1 cm,120 ℃干燥 膨润土 36 酸改性 KI+硫酸 100 ℃烘干 95 μm筛 膨润土 33 酸液 70 ℃油浴搅拌6 h 研磨 膨润土 37 KI+硫酸 100 ℃干燥20 h 膨润土负载壳聚糖 30 回流 3-巯基丙基三甲氧基硅烷 100 °C的烤箱中干燥 膨润土 38 -
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