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Citation: ZHANG Tian-Yong, YANG Qiu-Sheng, SHI Hui-Xian, HAN Cong, LIU Xu. Adsorption of Naphthalene on a Viscose-Based Activated Carbon Fiber[J]. Acta Physico-Chimica Sinica, ;2010, 26(02): 367-372. doi: 10.3866/PKU.WHXB20100221 shu

Adsorption of Naphthalene on a Viscose-Based Activated Carbon Fiber

1.
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China; State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University Fuzhou 350002, P. R. China

Received Date: 30 June 2009
Available Online: 29 December 2009

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 ℃. The adsorption capacity of VACF for naphthalene decreases significantly above 30 ℃. 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.
- Adsorption,
- Activated carbon fiber,
- Naphthalene,
- Adsorption equation,
- Copper ion
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