利用类水滑石化合物热分解制备的镁铝氧化物从水溶液中去除四氟硼酸根离子。
Removal of tetrafluoroborate ion from aqueous solution using magnesium-aluminum oxide produced by the thermal decomposition of a hydrotalcite-like compound.
作者信息
Yoshioka Toshiaki, Kameda Tomohito, Miyahara Motoya, Uchida Miho, Mizoguchi Tadaaki, Okuwaki Akitsugu
机构信息
Graduate School of Environmental Studies, Tohoku University, Aramaki Aza Aoba 6-6-07, Aoba-ku, Sendai 980-8579, Japan.
出版信息
Chemosphere. 2007 Oct;69(5):832-5. doi: 10.1016/j.chemosphere.2007.05.009. Epub 2007 Jun 21.
Magnesium-aluminum oxide (Mg-Al oxide) prepared by the thermal decomposition of a hydrotalcite-like compound was found to have potential for treating NaBF(4) wastewater. The Mg-Al oxide removed the BF(4)(-) and F(-) and H(3)BO(3) from the NaBF(4) solution. With increasing Mg-Al oxide quantity and time, the BF(4)(-) concentration decreased and the degree of BF(4)(-), F(-), and boron removal increased. The decrease in the BF(4)(-) concentration resulted from uptake by the Mg-Al oxide and not hydrolysis. The Mg-Al oxide took up F(-) from the solution preferentially. The Mg-Al oxide also converted the H(3)BO(3) in the aqueous solution into H(2)BO(3)(-), which it took up.
通过水滑石类化合物热分解制备的镁铝氧化物（Mg-Al氧化物）被发现具有处理NaBF₄废水的潜力。Mg-Al氧化物从NaBF₄溶液中去除了BF₄⁻、F⁻和H₃BO₃。随着Mg-Al氧化物用量和时间的增加，BF₄⁻浓度降低，BF₄⁻、F⁻和硼的去除率提高。BF₄⁻浓度的降低是由于被Mg-Al氧化物吸收而非水解所致。Mg-Al氧化物优先从溶液中吸收F⁻。Mg-Al氧化物还将水溶液中的H₃BO₃转化为H₂BO₃⁻并将其吸收。
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