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2008•Journal of Thermal Science and TechnologyRequires access

Experimental study on benzene adsorption by activated carbon fibers at low concentrations

Tao Zhang

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Abstract

The adsorption of non-polar benzene vapors by viscose rayon-based activated carbon fiber(ACF) was investigated.ACF were used as the adsorbent because they exhibit higher adsorption capacities and faster adsorption kinetics than granular activated carbons(GAC) and show potential as an adsorbent to effectively remove Volatile Organic Compounds(VOCs).The surface area and pore texture of ACF were characterized by nitrogen adsorption.Gas adsorption and desorption on the samples were measured by the gravimetric method.The Dubinin-Radushkevich(DR) equation was used to fit the experimental adsorption isotherms.The experimental results showed that adsorption volume increases with the increasing of ACF surface area.And the desorption process takes about 100 minutes.

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What this paper is about

The adsorption of non-polar benzene vapors by viscose rayon-based activated carbon fiber(ACF) was investigated.ACF were used as the adsorbent because they exhibit higher adsorption capacities and faster adsorption kinetics than granular activated carbons(GAC) and show potential as an adsorbent to effectively remove Volatile Organic Compounds(VOCs).The surface area and pore texture of ACF were characterized by nitrogen adsorption.Gas adsorption and desorption on the samples were measured by the gravimetric method.The Dubinin-Radushkevich(DR) equation was used to fit the experimental adsorption isotherms.The experimental results showed that adsorption volume increases with the increasing of ACF surface area.And the desorption process takes about 100 minutes.

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Available abstract

The adsorption of non-polar benzene vapors by viscose rayon-based activated carbon fiber(ACF) was investigated.ACF were used as the adsorbent because they exhibit higher adsorption capacities and faster adsorption kinetics than granular activated carbons(GAC) and show potential as an adsorbent to effectively remove Volatile Organic Compounds(VOCs).The surface area and pore texture of ACF were characterized by nitrogen adsorption.Gas adsorption and desorption on the samples were measured by the gravimetric method.The Dubinin-Radushkevich(DR) equation was used to fit the experimental adsorption isotherms.The experimental results showed that adsorption volume increases with the increasing of ACF surface area.And the desorption process takes about 100 minutes.

Key concepts: Adsorption, Activated carbon, Benzene, Gravimetric analysis, Viscose, Desorption, Volume (thermodynamics), Materials science

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