'Waste' coir pith - a potential biomass for the treatment of dyeing wastewaters

被引：220

作者：

Namasivayam, C ^{[1
]}

Kumar, MD ^{[1
]}

Selvi, K ^{[1
]}

Begum, RA ^{[1
]}

Vanathi, T ^{[1
]}

Yamuna, RT ^{[1
]}

机构：

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

来源：

BIOMASS & BIOENERGY | 2001年 / 21卷 / 06期

关键词：

dyes; adsorption; isotherms; coir pith; pH; desorption;

D O I：

10.1016/S0961-9534(01)00052-6

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Removal of acid dyes (acid violet and acid brilliant blue) and basic dyes (rhodamine B and methylene blue) was carried out using 'waste' coir pith as adsorbent. Parameters like agitation time, adsorbent dosage and pH effect were studied. Adsorption followed the first-order rate expression. The equilibrium data fit well with both Langmuir and Freundlich models of adsorption. Desorption experiments confirmed that major mode of adsorption is ion-exchange for the dyes acid brilliant blue and methylene blue whereas acid violet showed mainly physical adsorption. Chemisorption seems to be the major mode of adsorption for rhodamine B. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：477 / 483

页数：7

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