Removals of Boron and Selenium in a Solution of Fly Ash from Coal Power Plant
Removals of Boron and Selenium in a Solution of Fly Ash from Coal Power Plant
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燃煤电厂粉煤灰溶液中硼和硒的去除
DOI：
10.2965/jswe.26.607
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
T. Komatsu
中科院分区：
文献类型：
--
作者：
S. Hirata;Shusaku Hirata;T. Komatsu
使用螯合树脂（Diaion CRB02，Mistubishi Chem.）检查了发电厂粉煤灰（EP 灰）溶液中硼、硒 (IV) 和硒 (VI) 的去除情况。使用树脂在 pH 范围 4-7 内定量去除硼、Se (IV) 和 Se (VI)。在最佳pH值下，硼的最大吸附量为11.7mg·g-1，Se(IV)的最大吸附量为9.7mg·g-1，Se(VI)的最大吸附量为6.8mg·g-1。用10倍树脂体积的1M硫酸溶液对吸附元素进行定量回收，硼收率98%，Se(IV)收率98%，Se(VI)收率88%。当体积为树脂体积500倍的EP灰溶液（硼：2.7mg·l-1、硒：0.06mg·l-1、硫酸根离子：89.7mg·l-1）以30h-1的空速过柱时，该体积的样品溶液没有出现突破点。这些结果表明，使用该树脂可以成功回收EP灰溶液中的硼、Se(IV)和Se(VI)。
The removals of boron, selenium (IV) and selenium (VI) in a solution of coal fly ash from a power plant (EP ash) were examined using chelating resin (Diaion CRB02, Mistubishi Chem.). Boron, Se (IV) and Se (VI) were removed quantitatively in the pH range 4-7 using the resin. At optimum pHs, the maximum adsorbed quantities were 11.7mg·g-1 for boron, 9.7mg·g-1 for Se (IV) and 6.8mg·g-1 for Se (VI). The adsorbed elements were recovered quantitatively, yielding 98% for boron, 98% for Se (IV) and 88% for Se (VI) with a 1M sulfuric acid solution whose volume is 10times the resin volume. When a solution of EP ash (boron : 2.7mg·l-1, selenium : 0.06mg·l-1, sulfate ion : 89.7mg·l-1), whose volume is 500times the resin volume, was passed through the column at the space velocity of 30h-1, breakthrough points did not appear by this volume of the sample solution. Thsese results suggest that boron, Se (IV) and Se (VI) in the solution of EP ash can be recovered successfully using the resin.