Adsorption of Naphthalene on a Viscose-Based Activated Carbon Fiber

被引：1
|
作者：
Zhang Tian-Yong [1 ,2 ]
Yang Qiu-Sheng [1 ]
Shi Hui-Xian [1 ]
Han Cong [1 ]
Liu Xu [1 ]
机构：
[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
[2] Fuzhou Univ, State Key Lab Breeding Base Photocatalysis, Fuzhou 350002, Peoples R China
来源：
ACTA PHYSICO-CHIMICA SINICA | 2010年 / 26卷 / 02期
关键词：
Adsorption; Activated carbon fiber; Naphthalene; Adsorption equation; Copper ion; SURFACE-CHEMISTRY; AQUEOUS-SOLUTIONS; WATER-VAPOR; AB-INITIO; ORGANIC-COMPOUNDS; REMOVAL; DESORPTION; MOLECULES; NANOPORES; KINETICS;
D O I：
10.3866/PKU.WHXB20100221
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：
We studied the isothermal adsorption of naphthalene on a viscose-based activated carbon fiber (VACF) in aqueous solution. The adsorption experimental data were fitted to adsorption equations such as the Langmuir, Freundlich, Dubinin-Radushkevitch(D-R), Dubinin-Astalov(D-A), Langmuir-Freundlich(L-F), and Redlich-Peterson (R-P) equations. The effects of temperature, pH, and pre-loaded copper ions on the VACF on the adsorption of naphthalene were investigated. The fitting results show that the micropore volume filling theory fits better than the single-layer adsorption theory for naphthalene adsorption onto VACF. The adsorption of naphthalene occurs spontaneously between 20 and 40 degrees C. The adsorption capacity of VACF for naphthalene decreases significantly above 30 degrees C. A new mechanism is proposed to explain why the adsorption capacity increases significantly in lower pH aqueous solutions. The reduction of naphthalene takes place on the VACF with pre-loaded copper ions.
引用
收藏
页码：367 / 372
页数：6
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