Ferrite Process; Heavy Metal Ions Treatment System
Ferrite Process; Heavy Metal Ions Treatment System
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DOI：
10.2166/wst.1991.0645
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发表时间：
1991-05
影响因子：
2.7
通讯作者：
Y. Tamaura;T. Katsura;S. Rojarayanont;T. Yoshida;H. Abe
中科院分区：
文献类型：
--
作者：
Y. Tamaura;T. Katsura;S. Rojarayanont;T. Yoshida;H. Abe
介绍了“铁氧体法”的原理、重金属离子处理系统以及实际运行的系统。在“铁素体过程”中，铁（II）离子氧化形成尖晶石结构的过程中，重金属离子被纳入铁素体的晶格点。根据反应pH值的不同，铁氧体形成反应有两条路径；绿锈路径（pH 7 ~ 10）和γ-FeO（OH）路径（pH 10.5 ~ 11）。结合到晶格中的重金属离子与铁氧体中Fetotal的摩尔比取决于反应pH和反应溶液中重金属离子的摩尔比以及加入到反应溶液中的Fe（II）离子的摩尔比。铁氧体法目前已实际应用于日本各大学和研究所实验室废水的处理、电镀废水的处理以及分支矿山废水的处理。由于铁氧体污泥具有很强的磁性，因此可以作为有用的磁性材料重新利用。
The principle of the “Ferrite Process”, heavy metal ions treatment system, and the practically operated systems are presented. In the “Ferrite Process”, the heavy metal ions are incorporated into the lattice points of the ferrites in the course of the formation of the spinel structure by the oxidation of the Fe(II) ions. The ferrite formation reaction proceeds in two paths depending on the reaction pH; 1) the green rust path (pH 7-10), and 2) the γ-FeO(OH) path (pH 10.5-11). The mole ratio of the heavy metal ions incorporated into the lattice points to the Fetotal in the ferrites depends on the reaction pH and the mol ratio of the heavy metal ions in the reaction solution and to the Fe(II) ions added to the reaction solution. Ferrite Process is now practically adopted to the treatment of the laboratory waste waters at the universities and the institutes in Japan, to the treatment of the plating waste waters, and to the treatment of branching mine drainage waters. Since the ferrite sludge has a strong magnetic property, it is reused as a useful magnetic material.