Adsorption of benzene, toluene, ethylbenzene and p-xylene by NaOCl-oxidized carbon nanotubes

被引：197

作者：

Su, Fengsheng ^{[1
]}

Lu, Chungsying ^{[1
]}

Hu, Suhkai ^{[1
]}

机构：

[1] Natl Chung Hsing Univ, Dept Environm Engn, Taichung 40226, Taiwan

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2010年 / 353卷 / 01期

关键词：

Carbon nanotubes; Adsorption; Surface modification; BTEX; Wastewater treatment; ORGANIC-CHEMICALS; SURFACE-CHEMISTRY; AQUEOUS-SOLUTIONS; ACTIVATED CARBON; WATER; OXIDATION; 1,2-DICHLOROBENZENE; TRIHALOMETHANES; HYDROCARBONS; EQUILIBRIUM;

D O I：

10.1016/j.colsurfa.2009.10.025

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：

Multiwalled carbon nanotubes (CNTs) were oxidized by sodium hypochlorite (NaOCl) Solution and were employed as adsorbents to study their characterizations and adsorption performance of benzene, toluene, ethylbenzene and p-xylene (abbreviated as BTEX) in an aqueous Solution. The physicochemical properties of CNTs such as purity, structure and surface nature were greatly improved after oxidation, which significantly enhanced BTEX adsorption capacity. The adsorption capacity of CNT(NaOCl) increased with contact time and initial adsorbate concentration, but changed insignificantly with solution ionic strength and pH. A comparative Study on the BTEX adsorption revealed that the CNT(NaOCl) had better BTEX adsorption as compared to CNTs and granular activated carbon. This Suggests that the CNT(NaOCl) are efficient BTEX adsorbents and that they possess good potential for BTEX removal in wastewater treatment. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：83 / 91

页数：9

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