TREATMENT OF CADMIUM-PLATING AND CHROMIUM-PLATING WASTES BY IRON OXIDE-COATED SAND

被引：23

作者：

SATPATHY, JK ^{[1
]}

CHAUDHURI, M ^{[1
]}

机构：

[1] INDIAN INST TECHNOL,DEPT CIVIL ENGN,MASTER TECHNOL PROGRAM ENVIRONM ENGN,KANPUR 208016,UTTAR PRADESH,INDIA

来源：

WATER ENVIRONMENT RESEARCH | 1995年 / 67卷 / 05期

关键词：

CADMIUM; CHROMIUM; CYANIDE; IRON OXIDE; METAL-PLATING WASTE; TREATMENT;

D O I：

10.2175/106143095X131682

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Iron oxide-coated sand, prepared by evaporating (110 degrees +/- 10 degrees C) ferric nitrate solution in the presence of sand, was found unsuitable for removal of chromium from a mixed oxidation-state chromium-plating waste (chromium 2.55 to 2.70 mg Cr/L) in a preliminary column test; however, it appeared promising for one-step removal of cadmium and cyanide from a cadmium-plating waste (cadmium 3.60 to 3.75 mg Cd/L; and cyanide 0.85 to 1.06 mg CN-/L). A detailed column test with regeneration by 0.01 M NaNO3 solution at pH 3.0 further indicated suitability of the iron oxide-coated sand for treatment of cadmium-plating waste. Making the most of column operation in terms of hydraulic loading rate and medium depth and standardization of regeneration procedure are necessary.

引用

页码：788 / 790

页数：3

共 11 条

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