A thermodynamic approach to assess organic solute adsorption onto activated carbon in water

被引：19

作者：

de Ridder, David J. ^{[1
]}

Verliefde, Arne R. D. ^{[1
,2
]}

Heijman, Bas G. J. ^{[1
]}

Gelin, Simon ^{[3
]}

Pereira, Manuel F. R. ^{[4
]}

Rocha, Raquel P. ^{[4
]}

Figueiredo, Jose L. ^{[4
]}

Amy, Gary L. ^{[1
,5
]}

van Dijk, Hans C. ^{[1
]}

机构：

[1] Delft Univ Technol, POB 5048, NL-2600 GA Delft, Netherlands

[2] Univ Ghent, B-9000 Ghent, Belgium

[3] Ecole Ponts Paristech, F-77455 Marne La Vallee 2, France

[4] Univ Porto, Fac Engn, Lab Associado LSRE LCM, Lab Catalise & Mat, P-4200465 Oporto, Portugal

[5] King Abdullah Univ Sci & Technol, Thuwal, Saudi Arabia

来源：

CARBON | 2012年 / 50卷 / 10期

关键词：

SURFACE-CHEMISTRY; MICROPOLLUTANTS; WETTABILITY;

D O I：

10.1016/j.carbon.2012.03.052

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper, the hydrophobicity of 13 activated carbons is determined by various methods; water vapour adsorption, immersion calorimetry, and contact angle measurements. The quantity and type of oxygen-containing groups on the activated carbon were measured and related to the methods used to measure hydrophobicity. It was found that the water-activated carbon adsorption strength (based on immersion calorimetry, contact angles) depended on both type and quantity of oxygen-containing groups, while water vapour adsorption depended only on their quantity. Activated carbon hydrophobicity measurements alone could not be related to 1-hexanol and 1,3-dichloropropene adsorption. However, a relationship was found between work of adhesion and adsorption of these solutes. The work of adhesion depends not only on activated carbon-water interaction (carbon hydrophobicity), but also on solute-water (solute hydrophobicity) and activated carbon-solute interactions. Our research shows that the work of adhesion can explain solute adsorption and includes the effect of hydrogen bond formation between solute and activated carbon. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：3774 / 3781

页数：8

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