吸附
氟化物
涂层
材料科学
氢氧化物
铈
聚合物
苯乙烯
氢氧化铝
化学工程
共聚物
铝
核化学
化学
复合材料
无机化学
冶金
有机化学
工程类
作者
Haixia Wu,Ting-Jie Wang,Xiaomin Dou,Bei Zhao,Lin Cheng,Yong Jin
摘要
An iron−aluminum−cerium trimetal hydroxide (Fe—Al—Ce) adsorbent with an acrylic−styrene copolymer latex binder, which can cross-link and cure at room temperature, was coated on sand particles by spray coating. The adhesion of the coated layer increased with the latex/Fe—Al—Ce ratio. A suitable latex/Fe—Al—Ce ratio and thickness of coated adsorbent were determined to be 0.8 and 70 μm, respectively, giving good stability and adsorption capacity. The corresponding adsorption capacity of fluoride ions on the coated sand reached 3.46 mg/g at pH 7.0 and an initial fluoride concentration of 50 mg/L. Sand coated with Fe−Al−Ce is a potential adsorbent for use in a packed bed for fluoride removal from drinking water.
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