EVALUATION OF SOLUBLE AND INSOLUBLE XANTHATE PROCESS FOR THE REMOVAL OF HEAVY-METALS FROM WASTEWATERS

被引：36

作者：

TARE, V

CHAUDHARI, S

机构：

[1] Environmental Engineering Division, Department of Civil Engineering, Indian Institute of Technology, Kanpur-208 016, India

来源：

WATER RESEARCH | 1987年 / 21卷 / 09期

关键词：

HEAVY METALS - Removal;

D O I：

10.1016/0043-1354(87)90032-7

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effectiveness of xanthate (water soluble and water insoluble) process for hexavalent chromium removal has been evaluated. Insoluble xanthates were synthesized in the laboratory from corn starch, potato starch and cellulose powder, their removal efficiency for Cr(VI) is compared with soluble starch xanthate. In preliminary experiments various insoluble xanthates were tested for their effectiveness in removal of both metallic cation left bracket Cd(II) right bracket and metallic anion (chromate). The removal mechanism for Cr(VI) appears to be reduction and complexation of the reduced chromium with xanthate groups. A comparative analysis of the traditional reduction-precipitation process and the xanthate process for hypothetical waste containing hexavalent chromium revealed that the xanthate process would be a worthwhile alternative.

引用

页码：1109 / 1118

页数：10

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