Studies on removal and recovery of Cr(VI) from electroplating wastes

被引：132

作者：

Ajmal, M

Rao, RAK

Siddiqui, BA

机构：

[1] Department of Applied Chemistry, Fac. of Engineering and Technology, Aligarh Muslim University

来源：

WATER RESEARCH | 1996年 / 30卷 / 06期

关键词：

phosphate treated sawdust; hexavalent chromium adsorption and recovery; electroplating waste treatment;

D O I：

10.1016/0043-1354(95)00301-0

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Phosphate treated sawdust shows remarkable increase in sorption capacity of Cr(VI) as compared to untreated sawdust. The adsorption process is pH dependent. 100% adsorption of Cr(VI) was observed in the pH range <2 for the initial Cr(VI) concentration of 8-50 mg 1(-1). The effect of various adsorbent doses at pH 2 confirms Langmuir adsorption isotherms. 100% removal of Cr(VI) from synthetic waste as well as from electroplating waste containing 50 mg 1(-1) Cr(VI) was achieved by batch as well as by column processes. The adsorbed Cr(VI) on phosphate treated sawdust was recovered (87%) using 0.01 M sodium hydroxide. Copyright (C) 1996 Elsevier Science Ltd

引用

页码：1478 / 1482

页数：5

共 16 条

[1] SURFACE ENTRAPMENT OF TOXIC METALS FROM ELECTROPLATING WASTE AND THEIR POSSIBLE RECOVERY [J].