Removal of hexavalent chromium and metal cations by a selective and novel carbon adsorbent

被引：156

作者：

Lalvani, SB ^{[1
]}

Wiltowski, T

Hubner, A

Weston, A

Mandich, N

机构：

[1] So Illinois Univ, Dept Mech Engn & Energy Proc, Carbondale, IL 62901 USA

[2] So Illinois Univ, Dept Engn Technol, Carbondale, IL 62901 USA

[3] HBM Electrochem Co, Lansing, IL 60436 USA

来源：

CARBON | 1998年 / 36卷 / 7-8期

关键词：

soot; adsorption; chromium; lead; zinc; ion selectivity;

D O I：

10.1016/S0008-6223(98)00102-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Carbon produced by the contact are method (whereby graphite electrodes are arced in an inert atmosphere) was employed for the removal of hexavalent and trivalent chromium ions as well as other metal cations from aqueous solutions. It is known that hexavalent chromium is present as an anionic species in the solution. The carbon adsorbent used in this study selectively removed the anions of hexavalent chromium from the solution, whereas, depending upon the solution pH, no or very small uptake of metal cations was observed. On the other hand, commercial activated carbon showed great affinity for cations of lead, zinc, and trivalent chromium but none for the anion of hexavalent chromium. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：1219 / 1226

页数：8

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