Removal of Boron Using Nylon-Based Chelating Fibers
Removal of Boron Using Nylon-Based Chelating Fibers
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DOI：
10.1021/ie101968h
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发表时间：
2011-05-04
影响因子：
4.2
通讯作者：
Sugo, Takanobu
中科院分区：
文献类型：
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作者：
Ikeda, Kohsuke;Umeno, Daisuke;Sugo, Takanobu
采用电子束引发接枝聚合的方法，在6-尼龙纤维上接枝上含环氧基的单体甲基丙烯酸缩水甘油酯(GMA)，然后在环氧基上加入N-甲基葡萄糖胺作为络合物形成基团。得到的螯合纤维的螯合基团密度为2.0 mmol/g，是具有相同官能度的商品化螯合小球的74%。在10~100h(-1)的空速范围内，150 mg-B/L硼溶液被强制流过螯合纤维填充床，定义为流速除以床层体积(0.3mL)。在空速为20h(-1)时，螯合纤维填充床的动态结合能力是螯合微珠填充床的2.5倍。
By using electron-beam-induced graft polymerization, an epoxy-group-containing monomer, glycidyl methacrylate (GMA), was appended onto a 6-nylon fiber; subsequently, N-methylglucamine as a chelate-forming moiety was added to the epoxy group. The chelating group density of the resultant chelating fiber was 2.0 mmol/g, which was 74% of that of a commercially available chelating bead containing the same functionality. A 150 mg-B/L boron solution was forced to flow through the chelating-fiber-packed bed at the space velocity range from 10 to 100 h(-1), defined by dividing flow rate by bed volume (0.3 mL). At a space velocity of 20 h(-1), the dynamic binding capacity of the chelating-fiber-packed bed was 2.5-fold higher than that of the chelating-bead-packed bed.