Removal of some polycyclic aromatic hydrocarbons from petrochemical wastewater using low-cost adsorbents of natural origin

被引：212

作者：

Crisafully, Rudy ^{[1
]}

Milhome, Maria Aparecida L. ^{[4
]}

Cavalcante, Rivelino M. ^{[1
,2
]}

Silveira, Edilberto R. ^{[2
]}

De Keukeleire, Denis ^{[3
]}

Nascimento, Ronaldo F. ^{[1
]}

机构：

[1] Univ Fed Ceara, Lab Analise Tracos LAT, Dept Quim Fis & Analit, BR-60455760 Fortaleza, Ceara, Brazil

[2] Univ Fed Ceara, Dept Quim Organ & Inorgan, BR-60455760 Fortaleza, Ceara, Brazil

[3] Univ Ghent, Fac Pharmaceut Sci, B-9000 Ghent, Belgium

[4] Univ Fed Ceara, Dept Engn Hidraul & Ambiental, Ctr Tecnol, BR-60455760 Fortaleza, Ceara, Brazil

来源：

BIORESOURCE TECHNOLOGY | 2008年 / 99卷 / 10期

关键词：

polycyclic aromatic hydrocarbons; natural adsorbents; wastewater; chitin; coconut;

D O I：

10.1016/j.biortech.2007.08.041

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Removal of polycyclic aromatic hydrocarbons (PAHs) from petrochemical wastewater was investigated using various low-cost adsorbents of natural origin including sugar cane bagasse, green coconut shells, chitin, and chitosan. Adsorption experiments of mixtures of PAHs (5.0-15.0 mg/L) have been carried out at ambient temperature (28 +/- 2 degrees C) and pH 7.5. The adsorption isotherms of PAHs were in agreement with a Freundlich model, while the uptake capacity of PAHs followed the order: green coconut shells > sugar cane bagasse > chitin > chitosan. The adsorption properties of green coconut shells were comparable to those of some conventional adsorbents such as Amberlite T. The partition coefficients in acetone:water, the adsorption constants at equilibrium, and the molecular masses of the PAHs could be linearly correlated with octanol-water partition coefficients. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：4515 / 4519

页数：5

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