A study on antimony-bearing ferrite

被引：12

作者：

Kim, SJ

Arai, M

Tamura, M

Suzuki, Y

机构：

[1] Univ Tokyo, Dept Chem Syst Engn, Bunkyo Ku, Tokyo 113, Japan

[2] Univ Tokyo, Ctr Environm Sci, Bunkyo Ku, Tokyo 113, Japan

来源：

JOURNAL OF HAZARDOUS MATERIALS | 1998年 / 57卷 / 1-3期

关键词：

ferrite; waste-water treatment; magnetite; spinel structure; saturation magnetization; Mossbauer spectra; antimony;

D O I：

10.1016/S0304-3894(97)00005-8

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Ferrite containing heavy metals is precipitated by the wet method of the ferrite process when heavy metal ions come to coexistence. Based on this process, this paper investigated the treatable limit, existing shape after treatment, and properties of sludge formed on antimony compounds that have been restricted by Basel convention as a hazardous heavy metal. We determined that the ferrite process can be applied in initial concentrations up to 75 ppm in Sb3+ and Sb5+ solutions. For the initial concentrations of antimony exceeding 75 ppm, formation of alpha-FeOOH (Goethite) appeared gradually and showed difficulties of treatment by the ferrite process. Applicable limits of Sb3+ and Sb5+ from the results of this study were expected to be around 75 ppm and 100 ppm. Ferrite precipitate formed was a spherical particle cohering strongly at an approximate size of 0.1 mu m. (C) 1998 Elsevier Science B.V.

引用

页码：1 / 12

页数：12

共 19 条

[1] SURFACE IONIZATION AND COMPLEXATION AT OXIDE-WATER INTERFACE .2. SURFACE PROPERTIES OF AMORPHOUS IRON OXYHYDROXIDE AND ADSORPTION OF METAL-IONS [J].