COPPER REMOVAL FROM WATER BY CHEMICAL-REDUCTION WITH SODIUM-BOROHYDRIDE

被引：14

作者：

GOMEZLAHOZ, C ^{[1
]}

GARCIAHERRUZO, F ^{[1
]}

RODRIGUEZMAROTO, JM ^{[1
]}

RODRIGUEZ, JJ ^{[1
]}

机构：

[1] UNIV MALAGA,DEPT CHEM ENGN,E-29071 MALAGA,SPAIN

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 1992年 / 27卷 / 11期

关键词：

D O I：

10.1080/01496399208019436

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The use of NaBH4 as a chemical reductant to precipitate copper from water has been studied. Initial Cu2+ concentrations of 25 and 40 mg/L have been checked, and complete removal can be achieved. When solid NaBH4 is fed, BH4- to Cu2+ molar ratios higher than 2 were needed. This can be substantially improved by using NaBH4 as a stabilized alkaline solution. A kinetic model is proposed which gives information about the relative rates of the two competitive reactions involved (Cu2+ and water reduction with BH4-) and allows the operating conditions leading to minimum BH4- consumption to be established.

引用

页码：1449 / 1468

页数：20