Removal of selenocyanate from water using elemental iron

被引：44

作者：

Meng, XG ^{[1
]}

Bang, S ^{[1
]}

Korfiatis, GP ^{[1
]}

机构：

[1] Stevens Inst Technol, Ctr Environm Engn, Hoboken, NJ 08904 USA

来源：

WATER RESEARCH | 2002年 / 36卷 / 15期

基金：

美国国家科学基金会;

关键词：

selenocyanate; selenium; iron; refinery; wastewater; deselenation;

D O I：

10.1016/S0043-1354(02)00086-6

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Batch experiments were conducted to investigate the removal of selenocyanate (SeCN-) from oil refinery wastewater and artificial wastewater with elemental iron [Fe(0)]. The chemical forms of selenium in the reacted solids were determined with X-ray photoelectron spectroscopy (XPS) and a sulfite extraction procedure. SeCN- was effectively removed from the wastewater with Fe(0) filings when the water pH was controlled at approximately 6. SeCN- was removed by Fe(0) through the formation of elemental selenium [Se(0)] and ferrous selenide. The possible chemical reactions between SeCN- and Fe(0) included deselenation of SeCN- and electrochemical reduction of Se(0) to selenide. A cost-effective process may be developed for the treatment of SeCN- in wastewater using Fe(0). (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：3867 / 3873

页数：7

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