Uptake of dyes by a promising locally available agricultural solid waste: coir pith

被引：360

作者：

Namasivayam, C ^{[1
]}

Radhika, R ^{[1
]}

Suba, S ^{[1
]}

机构：

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

来源：

WASTE MANAGEMENT | 2001年 / 21卷 / 04期

关键词：

coir pith; dyes; adsorption dynamics; isotherms; pH effect;

D O I：

10.1016/S0956-053X(00)00081-7

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The adsorption of rhodamine-B and acid violet by coir pith carbon was carried out by varying the parameters such as agitation time, dye concentration, adsorbent dose and pH. The adsorption followed both Langmuir and Freundlich isotherms. The adsorption capacity was found to be 2.56 mg and 8.06 mg dye per g of the adsorbent for rhodamine-B and acid violet, respectively. Adsorption of dyes followed first order rate kinetics. Acidic pH was favorable for the adsorption of acid violet and alkaline pH was favorable to rhodamine-B. Desorption studies showed that alkaline pH was favorable fur the desorption of acid violet and acidic pH was favorable for the desorption of rhodamine-B. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：381 / 387

页数：7

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