Removal of Congo Red from water by adsorption onto activated carbon prepared from coir pith, an agricultural solid waste

被引：1288

作者：

Namasivayam, C ^{[1
]}

Kavitha, D ^{[1
]}

机构：

[1] Bharathiar Univ, Dept Environm Sci, Environm Chem Lab, Coimbatore 641046, Tamil Nadu, India

来源：

DYES AND PIGMENTS | 2002年 / 54卷 / 01期

关键词：

Congo Red; adsorption; coir pith carbon; isotherms; pH effect; desorption studies;

D O I：

10.1016/S0143-7208(02)00025-6

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The adsorption of Congo Red by coir pith carbon was carried out by varying the parameters such as agitation time, dye concentration, adsorbent dose, pH and temperature. Equilibrium adsorption data followed both Langmuir and Freundlich isotherms. Adsorption followed second-order rate kinetics. The adsorption capacity was found to be 6.7 mg dye per g of the adsorbent. Acidic pH was favourable for the adsorption of Congo Red. Desorption studies suggest that chemisorption might be the major mode of adsorption. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：47 / 58

页数：12

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