Removal of Cr(VI) from aqueous solution using activated cow dung carbon

被引：118

作者：

Das, DD ^{[1
]}

Mahapatra, R ^{[1
]}

Pradhan, J ^{[1
]}

Das, SN ^{[1
]}

Thakur, RS ^{[1
]}

机构：

[1] Reg Res Lab, CSIR, Bhubaneswar 751013, Orissa, India

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2000年 / 232卷 / 02期

关键词：

chromium (VI) adsorption; activated cow dung carbon; adsorption isotherm;

D O I：

10.1006/jcis.2000.7141

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：

Removal of hexavalent chromium from aqueous medium by using activated cow dung carbon was studied. Cow dung was carbonized and activated by treating with concentrated H2SO4 followed by heating for 24 h at 120 degreesC. The extent of adsorption was studied as a function of pH, contact time, amount of adsorbent, concentration of adsorbate, and temperature. At lower pH (<3.5), the prepared sorbent was capable of removing <similar to>90% Cr(VI) at 5 ppm concentration from aqueous synthetic solution. The dynamics of migration of the sorbate ions from the bulk onto the sorbent surface was studied and the results obtained under various experimental conditions were found to follow standard adsorption isotherms. The reaction kinetics was found to be of first order. (C) 2000 Academic Press.

引用

页码：235 / 240

页数：6

共 36 条

[1]

Agarwal SC, 1989, J INDIAN WATER WORKS, V2, P133

[2]

American Public Health Association, 1985, APHA STAND METH EX W

[3]

Anirudhan TS, 1998, INDIAN J CHEM TECHN, V5, P41

[4] SELENIUM ADSORPTION BY GOETHITE [J].