Removal of Cr(VI) from aqueous solution by adsorption onto activated carbon

被引：515

作者：

Selvi, K

Pattabhi, S

Kadirvelu, K

机构：

[1] PSG Coll Arts & Sci, Dept Environm Sci, Coimbatore 641014, Tamil Nadu, India

[2] Bharathiar Univ, Dept Environm Sci, Coimbatore 641046, Tamil Nadu, India

来源：

BIORESOURCE TECHNOLOGY | 2001年 / 80卷 / 01期

关键词：

adsorption; Cr(VI); agricultural solid waste; adsorption isotherms; desorption;

D O I：

10.1016/S0960-8524(01)00068-2

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Activated carbon (AC) prepared from coconut tree sawdust was used as an adsorbent for the removal of Cr(VI) from aqueous solution. Batch mode adsorption studies were carried out by varying agitation time, initial Cr(VI) concentration, carbon concentration and pH. Langmuir and Freundlich adsorption isotherms were applied to model the adsorption data. Adsorption capacity was calculated from the Langmuir isotherm and was 3.46 mg/g at an initial pH of 3.0 for the particle size 125-250 mum. The adsorption of Cr(VI) was pH dependent and maximum removal was observed in the acidic pH range. Desorption studies were carried out using 0.01-1 M NaOH solutions. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：87 / 89

页数：3

共 18 条

[1] Role of sawdust in the removal of copper(II) from industrial wastes [J].