Magnetic separation of ferrite sludge from a wastewater purification process

被引：12

作者：

Barrado, E ^{[1
]}

Prieto, F

Ribas, J

López, FA

机构：

[1] Univ Valladolid, Fac Sci, Dept Analyt Chem, E-47005 Valladolid, Spain

[2] Univ Valladolid, Fac Sci, Dept Inorgan Chem, E-47005 Valladolid, Spain

[3] CSIC, Natl Ctr Met Res, Dept Mat Recycling, E-28040 Madrid, Spain

来源：

WATER AIR AND SOIL POLLUTION | 1999年 / 115卷 / 1-4期

关键词：

ferrite sludge; heavy metals; magnetic separation; wastewater;

D O I：

10.1023/A:1005176228953

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The purification of wastewater containing dissolved metal ions by in situ precipitation gives rise to a sludge composed mainly of ferrites MeXFe3-xO(4) (where Me represents the existing metal ions in the wastewater). Oxides, iron oxy-hydroxides and other impurities are also present in the sludge in smaller proportion. The present investigation proposes magnetic separation of the sludge to recover the ferrites for their possible re-use. Under optimum operating conditions of the magnetic separator, a recovery efficiency of the magnetic fraction in excess of 99% and a high degree of selectivity were obtained.

引用

页码：385 / 394

页数：10

共 13 条

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BAGUL AG, 1992, INDIAN J CHEM A, V31, P661

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