A study on the Cr(VI) removal from aqueous solutions by steel wool

被引：74

作者：

Ozer, A ^{[1
]}

Altundogan, HS ^{[1
]}

Erdem, M ^{[1
]}

Tumen, F ^{[1
]}

机构：

[1] FIRAT UNIV,DEPT CHEM ENGN,TR-23279 ELAZIG,TURKEY

来源：

ENVIRONMENTAL POLLUTION | 1997年 / 97卷 / 1-2期

关键词：

steel wool; hexavalent chromium; reduction; precipitation;

D O I：

10.1016/S0269-7491(97)00065-1

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The reduction of Cr(VI) by steel wool and the precipitation of reduced chromium by CaCO3 powder and NaOH solution were investigated in continuous and batch systems, respectively. The effects of acid and initial Cr(VI) concentrations, volumetric sate and temperature of solution on Cr(VI) reduction were studied. The results showed that the reduction of Cr(VI), to a large extent, depended on, and increased with, acid concentration. The Cr(III) and iron ions in the reduced solution were completely precipitated by using NaOH solution at appropriate alkaline conditions. If was concluded that CaCO3 powder could be used as a cheap precipitant for Cr(III) ions. But the iron ions in the reduced solution could not be fully removed by using this precipitant. (C) 1997 Elsevier Science Ltd.

引用

页码：107 / 112

页数：6

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