Effects of activated carbon properties on the adsorption of naphthalene from aqueous solutions

被引：66

作者：

Ania, C. O. ^{[1
]}

Cabal, B. ^{[1
]}

Pevida, C. ^{[1
]}

Arenillas, A. ^{[1
]}

Parra, J. B. ^{[1
]}

Rubiera, F. ^{[1
]}

Pis, J. J. ^{[1
]}

机构：

[1] CSIC, Inst Nacl Carbon, E-33080 Oviedo, Spain

来源：

APPLIED SURFACE SCIENCE | 2007年 / 253卷 / 13期

关键词：

PAH; adsorption; liquid phase; activated carbon;

D O I：

10.1016/j.apsusc.2006.12.036

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：

The aim of this work was to investigate the role of porous and chemical heterogeneities of activated carbons in the adsorption of naphthalene from aqueous media. A commercially available activated carbon was used as the adsorbent, and its surface heterogeneity was systematically altered by heat treatment at 450 and 850 degrees C, obtaining a series of carbons with various oxygen contents and similar surface functionalities. The results confirmed that the adsorption of naphthalene depends strongly on the pore size distribution of the adsorbent, particularly narrow microporosity. Moreover, oxygen functionalities reduced the accessibility and affinity of naphthalene to the inner pore structure via formation of hydration clusters. Consequently, the hydrophobic/hydrophilic character of the adsorbent is important, since it dominates the competitive adsorption of water. Adsorbents with a high non-polar character (i.e., low oxygen content) have proven to be more efficient for naphthalene adsorption. (c) 2007 Elsevier B.V All rights reserved.

引用

页码：5741 / 5746

页数：6

共 13 条

[1] Removal of naphthalene from aqueous solution on chemically modified activated carbons [J].

Ania, C. O. ;

Cabal, B. ;

Arenillas, A. ;

Parra, J. B. ;

Rubiera, F. ;

Pis, J. J. .

WATER RESEARCH, 2007, 41 (02) :333-340

[2] Importance of structural and chemical heterogeneity of activated carbon surfaces for adsorption of dibenzothiophene [J].

Ania, CO ;

Bandosz, TJ .

LANGMUIR, 2005, 21 (17) :7752-7759

[3]

[Anonymous], 2000, OFFICIAL J L

[4]

Bandosz TJ, 2006, INTERFACE SCI TECHNO, V7, P1

[5] STRUCTURE AND REACTIVITY OF CARBONS - FROM CARBON-BLACK TO CARBON COMPOSITES [J].

DONNET, JB .

CARBON, 1982, 20 (04) :267-282

[6] HOMOGENEOUS AND HETEROGENEOUS MICROPORE STRUCTURES IN CARBONACEOUS ADSORBENTS [J].

DUBININ, MM ;

STOECKLI, HF .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1980, 75 (01) :34-42

[7] Effect of chemical surface heterogeneity on the adsorption mechanism of dissolved aromatics on activated carbon [J].

Franz, M ;

Arafat, HA ;

Pinto, NG .

CARBON, 2000, 38 (13) :1807-1819

[8] Usefulness of CO2 adsorption at 273 K for the characterization of porous carbons [J].

Lozano-Castelló, D ;

Cazorla-Amorós, D ;

Linares-Solano, A .

CARBON, 2004, 42 (07) :1233-1242

[9] Measurements of polycyclic aromatic hydrocarbon adsorption on activated carbons at very low concentrations [J].

Mastral, AM ;

García, T ;

Murillo, R ;

Callén, MS ;

López, JM ;

Navarro, MV .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2003, 42 (01) :155-161

[10] Influence of water on adsorption of organic compounds from its aqueous solutions on surface of synthetic active carbons [J].

Seredych, M ;

Gierak, A .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2004, 245 (1-3) :61-67

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